diff --git a/README.md b/README.md
index c640e09..024c2ee 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,30 @@
-Platform-samples
-================
+# API usage samples
 
-This is a public place for all sample projects related to Uphold Rest API.
+This repository contains [minimal, self-contained, executable example projects](http://www.sscce.org/)
+which demonstrate how to perform specific operations
+using [Uphold's REST API](https://uphold.com/en/developer/api/documentation/).
 
+> **Please note** that the examples contained here are optimized for clarity and simplicity.
+> They are not meant to illustrate the coding style or structure that we'd recommend for production applications,
+> but rather provide an entry point to start experimenting with Uphold's API.
+
+## Usage
+
+To try out each example, navigate to the corresponding folder and follow the instructions in the README.
+
+The currently available examples are:
+
+- Authentication
+  - [OAuth: Client credentials flow](authentication/oauth-client-credentials/)
+  - [OAuth: Authorization code flow](authentication/oauth-authorization-code/)
+  - [Personal Access Token (PAT)](authentication/personal-access-token/)
+- Transactions
+  - [User-to-user transaction](transactions/user-to-user-transaction/)
+
+## Contributing
+
+Feel free to submit your own examples to this repository! Just make sure to follow the
+[MRE](https://stackoverflow.com/help/minimal-reproducible-example)/[SSCCE](http://www.sscce.org/) principles,
+and describe all steps to run the project in a README file similar to those of the current examples.
+
+The contents of this repository are licensed under the [MIT license](LICENSE.txt).
diff --git a/rest-api/javascript/authentication/web-application-flow/.env.example b/authentication/oauth-authorization-code/.env.example
similarity index 100%
rename from rest-api/javascript/authentication/web-application-flow/.env.example
rename to authentication/oauth-authorization-code/.env.example
diff --git a/rest-api/javascript/authentication/web-application-flow/.gitignore b/authentication/oauth-authorization-code/.gitignore
similarity index 100%
rename from rest-api/javascript/authentication/web-application-flow/.gitignore
rename to authentication/oauth-authorization-code/.gitignore
diff --git a/rest-api/javascript/authentication/web-application-flow/README.md b/authentication/oauth-authorization-code/README.md
similarity index 98%
rename from rest-api/javascript/authentication/web-application-flow/README.md
rename to authentication/oauth-authorization-code/README.md
index 0de7f94..bf41f25 100644
--- a/rest-api/javascript/authentication/web-application-flow/README.md
+++ b/authentication/oauth-authorization-code/README.md
@@ -1,4 +1,4 @@
-# Authorization code flow
+# Authorization code OAuth flow
 
 This sample project demonstrates how a registered app can request authorization from Uphold users to perform actions on their behalf,
 by using the [authorization code OAuth flow](https://oauth.net/2/grant-types/authorization-code/).
diff --git a/authentication/oauth-authorization-code/authorization-code-flow.js b/authentication/oauth-authorization-code/authorization-code-flow.js
new file mode 100644
index 0000000..70d315d
--- /dev/null
+++ b/authentication/oauth-authorization-code/authorization-code-flow.js
@@ -0,0 +1,73 @@
+/**
+ * Dependencies.
+ */
+
+import axios from "axios";
+import dotenv from "dotenv";
+import path from "path";
+
+// Dotenv configuration.
+dotenv.config({ path: path.resolve() + "/.env" });
+
+// Authentication credentials.
+const auth = Buffer.from(process.env.CLIENT_ID + ":" + process.env.CLIENT_SECRET).toString("base64");
+
+/**
+ * Format API error response for printing in console.
+ */
+
+function formatError(error) {
+  const responseStatus = `${error.response.status} (${error.response.statusText})`;
+
+  console.log(
+    `Request failed with HTTP status code ${responseStatus}`,
+    JSON.stringify({
+      url: error.config.url,
+      response: error.response.data
+    }, null, 2)
+  );
+
+  throw error;
+}
+
+/**
+ * Exchange OAuth authorization code for an access token.
+ */
+
+export async function getAccessToken(code) {
+  try {
+    const response = await axios.request({
+      method: "POST",
+      url: `${process.env.BASE_URL}/oauth2/token`,
+      data: `code=${code}&grant_type=authorization_code`,
+      headers: {
+        Authorization: `Basic ${auth}`,
+        "content-type": "application/x-www-form-urlencoded",
+      },
+    });
+
+    return response.data;
+  } catch (error) {
+    formatError(error);
+  }
+}
+
+/**
+ * Get data about the currently authenticated user.
+ */
+
+export async function getUserInfo(accessToken) {
+  try {
+    const response = await axios.request({
+      method: "GET",
+      url: `${process.env.BASE_URL}/v0/me`,
+      headers: {
+        Authorization: `Bearer ${accessToken}`,
+      },
+    });
+
+    return response.data;
+  } catch (error) {
+    formatError(error);
+  }
+}
diff --git a/rest-api/javascript/authentication/web-application-flow/cert.pem b/authentication/oauth-authorization-code/cert.pem
similarity index 100%
rename from rest-api/javascript/authentication/web-application-flow/cert.pem
rename to authentication/oauth-authorization-code/cert.pem
diff --git a/authentication/oauth-authorization-code/index.js b/authentication/oauth-authorization-code/index.js
new file mode 100644
index 0000000..213e705
--- /dev/null
+++ b/authentication/oauth-authorization-code/index.js
@@ -0,0 +1,122 @@
+/**
+ * Dependencies.
+ */
+
+import dotenv from "dotenv";
+import express from "express";
+import fs from "fs";
+import https from "https";
+import path from "path";
+import { randomBytes } from "crypto";
+import { getUserInfo, getAccessToken } from "./authorization-code-flow.js";
+
+// Dotenv configuration.
+dotenv.config({ path: path.resolve() + "/.env" });
+
+// Server configuration.
+const app = express();
+const port = process.env.SERVER_PORT || 3000;
+const state = randomBytes(8).toString('hex');
+
+/**
+ * Main page.
+ */
+
+app.get("/", async (req, res) => {
+  // Compose the authorization URL. This assumes the `user:read` scope has been activated for this application.
+  const authorizationUrl = 'https://sandbox.uphold.com/authorize/'
+    + process.env.CLIENT_ID
+    + '?scope=user:read'
+    + '&state=' + state;
+
+  res.send(
+    `<h1>Demo app server</h1>
+    <p>Please <a href="${authorizationUrl}">authorize this app</a> on Uphold's Sandbox.</p>`
+  );
+});
+
+
+/**
+ * Callback URL endpoint.
+ */
+
+app.get("/callback", async (req, res) => {
+  try {
+    // Show an error page if the code wasn't returned or the state doesn't match what we sent.
+    if (!req.query.code || req.query.state !== state) {
+      res.send(composeErrorPage(req.query, state));
+    }
+
+    // Exchange the short-lived authorization code for a long-lived access token.
+    const token = await getAccessToken(req.query.code);
+    console.log(`Successfully exchanged authorization code ${req.query.code} for access token:`, token.access_token);
+
+    // Test the new token by making an authenticated call to the API.
+    const userData = await getUserInfo(token.access_token);
+    console.log("Output from test API call:", userData);
+
+    res.send(
+      `<h1>Success!</h1>
+      <p>The OAuth authorization code has been successfully exchanged for an access token.</p>`
+    );
+  } catch (error) {
+    // Unexpected error.
+    res.send(composeErrorPage(error));
+    return;
+  }
+});
+
+/**
+ * Compose error web page.
+ */
+
+function composeErrorPage(data, state) {
+  let content = "<h1>Something went wrong.</h1>";
+
+  if (data.state && data.state !== state) {
+    content += `<p>The received state (${data.state}) does not match the expected value: ${state}.</p>`;
+  } else if (data instanceof Error) {
+    const errorData = {
+      message: data.message,
+      request: {
+        url: data.config.url,
+        method: data.config.method,
+        data: data.config.data,
+        headers: data.config.headers
+      }
+    };
+    content += "<p>Here are details of the error (see also the console log):</p>";
+    content += `<pre>${JSON.stringify(errorData, null, 4)}</pre>`;
+  } else if (Object.values(data).length) {
+    content += "<p>Here's what Uphold's servers returned:</p>";
+    content += `<pre>${JSON.stringify(data, null, 4)}</pre>`;
+  } else {
+    content += "<p>This page should be reached at the end of an OAuth authorization process.</p>";
+    content += "<p>Please confirm that you followed the steps in the README, and check the console log.</p>";
+  }
+
+  return content;
+}
+
+/*
+ * Check for the .env file.
+ */
+
+if (fs.existsSync('./.env') === false) {
+  console.log("Missing .env file. Please follow the steps described in the README.");
+  process.exit();
+}
+
+/**
+ * Run server.
+ */
+
+https
+  .createServer({
+    key: fs.readFileSync("./key.pem"),
+    cert: fs.readFileSync("./cert.pem"),
+    passphrase: "test",
+  }, app)
+  .listen(port, () => {
+    console.log(`Server running at https://localhost:${port}`);
+  });
diff --git a/rest-api/javascript/authentication/web-application-flow/key.pem b/authentication/oauth-authorization-code/key.pem
similarity index 100%
rename from rest-api/javascript/authentication/web-application-flow/key.pem
rename to authentication/oauth-authorization-code/key.pem
diff --git a/authentication/oauth-authorization-code/package-lock.json b/authentication/oauth-authorization-code/package-lock.json
new file mode 100644
index 0000000..1c1f3a0
--- /dev/null
+++ b/authentication/oauth-authorization-code/package-lock.json
@@ -0,0 +1,392 @@
+{
+    "name": "uphold-authorization-code-oauth-sample",
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+                "encodeurl": "~1.0.2",
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+                "send": "0.17.1"
+            }
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+            "integrity": "sha1-n5VxD1CiZ5R7LMwSR0HBAoQn5xM="
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+}
diff --git a/authentication/oauth-authorization-code/package.json b/authentication/oauth-authorization-code/package.json
new file mode 100644
index 0000000..fc3aed0
--- /dev/null
+++ b/authentication/oauth-authorization-code/package.json
@@ -0,0 +1,16 @@
+{
+    "name": "uphold-authorization-code-oauth-sample",
+    "version": "0.0.1",
+    "description": "Demo project to make authenticated requests to Uphold's API using the authorization code OAuth flow",
+    "license": "MIT",
+    "type": "module",
+    "main": "app.js",
+    "dependencies": {
+        "axios": "^0.20.0",
+        "dotenv": "^8.2.0",
+        "express": "^4.17.1"
+    },
+    "engines": {
+        "node": ">=13.14"
+    }
+}
diff --git a/rest-api/javascript/authentication/client-credential-flow/.env.example b/authentication/oauth-client-credentials/.env.example
similarity index 100%
rename from rest-api/javascript/authentication/client-credential-flow/.env.example
rename to authentication/oauth-client-credentials/.env.example
diff --git a/rest-api/javascript/transaction/client-create-transaction/.gitignore b/authentication/oauth-client-credentials/.gitignore
similarity index 100%
rename from rest-api/javascript/transaction/client-create-transaction/.gitignore
rename to authentication/oauth-client-credentials/.gitignore
diff --git a/rest-api/javascript/authentication/client-credential-flow/README.md b/authentication/oauth-client-credentials/README.md
similarity index 56%
rename from rest-api/javascript/authentication/client-credential-flow/README.md
rename to authentication/oauth-client-credentials/README.md
index b141cc0..f7a0d36 100644
--- a/rest-api/javascript/authentication/client-credential-flow/README.md
+++ b/authentication/oauth-client-credentials/README.md
@@ -1,6 +1,6 @@
-# Client credentials flow
+# Client credentials OAuth flow
 
-This sample project demonstrates how to authenticate in the Uphold API using the [OAuth 2.0 client credentials](https://www.oauth.com/oauth2-servers/access-tokens/client-credentials/) flow.
+This sample project demonstrates how to authenticate in the Uphold API using the [OAuth 2.0 client credentials](https://oauth.net/2/grant-types/client-credentials/) flow.
 For further background, please refer to the [API documentation](https://uphold.com/en/developer/api/documentation).
 
 ## Summary
@@ -9,8 +9,8 @@ For further background, please refer to the [API documentation](https://uphold.c
 
 This sample project performs the following actions:
 
-- Get Token
-- List Assets
+- Obtain an access token using client credentials authentication
+- Perform an API request (list assets) using the token
 
 **Important notice:** In Uphold's production environment, client credentials authentication is only available for **business accounts**, and requires manual approval from Uphold.
 Please [contact Uphold](mailto:developer@uphold.com) to obtain this permission.
@@ -18,13 +18,15 @@ For requests made in the sandbox environment, as is the case with this demo proj
 
 ## Requirements
 
-- `node` v13.14.0 +
+- Node.js v13.14.0 or later
+- An account at <https://sandbox.uphold.com>
 
 ## Setup
 
-- run `npm install` (or `yarn install`)
-- create a `.env` file based on the `.env.example` file, and populate it with the required data
+- Run `npm install` (or `yarn install`)
+- [Create an app on Uphold Sandbox](https://sandbox.uphold.com/dashboard/profile/applications/developer/new) and note its client ID and secret
+- Create a `.env` file based on the `.env.example` file, and populate it with the required data
 
 ## Run
 
-- run `node index.js`
+- Run `node index.js`
diff --git a/authentication/oauth-client-credentials/client-credentials-flow.js b/authentication/oauth-client-credentials/client-credentials-flow.js
new file mode 100644
index 0000000..dc6a892
--- /dev/null
+++ b/authentication/oauth-client-credentials/client-credentials-flow.js
@@ -0,0 +1,73 @@
+/**
+ * Dependencies.
+ */
+
+import axios from "axios";
+import dotenv from "dotenv";
+import path from "path";
+
+// Dotenv configuration.
+dotenv.config({ path: path.resolve() + "/.env" });
+
+// Authentication credentials.
+const auth = Buffer.from(process.env.CLIENT_ID + ":" + process.env.CLIENT_SECRET).toString("base64");
+
+/**
+ * Format API error response for printing in console.
+ */
+
+function formatError(error) {
+  const responseStatus = `${error.response.status} (${error.response.statusText})`;
+
+  console.log(
+    `Request failed with HTTP status code ${responseStatus}`,
+    JSON.stringify({
+      url: error.config.url,
+      response: error.response.data
+    }, null, 2)
+  );
+
+  throw error;
+}
+
+/**
+ * Get a new access token, using client credentials authentication (client ID and secret).
+ */
+
+export async function getAccessToken() {
+  try {
+    const response = await axios.request({
+      method: "POST",
+      url: `${process.env.BASE_URL}/oauth2/token`,
+      data: "grant_type=client_credentials",
+      headers: {
+        Authorization: `Basic ${auth}`,
+        "content-type": "application/x-www-form-urlencoded",
+      },
+    });
+
+    return response.data;
+  } catch (error) {
+    formatError(error);
+  }
+}
+
+/**
+ * Get data about the currently authenticated user.
+ */
+
+export async function getUserInfo(accessToken) {
+  try {
+    const response = await axios.request({
+      method: "GET",
+      url: `${process.env.BASE_URL}/v0/me`,
+      headers: {
+        Authorization: `Bearer ${accessToken}`,
+      },
+    });
+
+    return response.data;
+  } catch (error) {
+    formatError(error);
+  }
+}
diff --git a/authentication/oauth-client-credentials/index.js b/authentication/oauth-client-credentials/index.js
new file mode 100644
index 0000000..26fb5fb
--- /dev/null
+++ b/authentication/oauth-client-credentials/index.js
@@ -0,0 +1,27 @@
+/**
+ * Dependencies.
+ */
+
+import { getUserInfo, getAccessToken } from "./client-credentials-flow.js";
+import fs from "fs";
+
+(async () => {
+  // Check for the .env file.
+  if (fs.existsSync('./.env') === false) {
+    console.log("Missing .env file. Please follow the steps described in the README.");
+    return;
+  }
+
+  try {
+    // Get a new access token using client credentials authentication.
+    const token = await getAccessToken();
+    console.log(`Successfully obtained a new access token:`, token.access_token);
+
+    // Test the new token by making an authenticated call to the API.
+    const userData = await getUserInfo(token.access_token);
+    console.log("Output from test API call:", userData);
+  } catch (error) {
+    // Unexpected error.
+    return;
+  }
+})();
diff --git a/rest-api/javascript/authentication/personal-access-token/package-lock.json b/authentication/oauth-client-credentials/package-lock.json
similarity index 55%
rename from rest-api/javascript/authentication/personal-access-token/package-lock.json
rename to authentication/oauth-client-credentials/package-lock.json
index 67e339e..2ca921c 100644
--- a/rest-api/javascript/authentication/personal-access-token/package-lock.json
+++ b/authentication/oauth-client-credentials/package-lock.json
@@ -1,5 +1,5 @@
 {
-  "name": "uphold-ccp",
+  "name": "uphold-client-credentials-oauth-sample",
   "version": "0.0.1",
   "lockfileVersion": 1,
   "requires": true,
@@ -12,11 +12,6 @@
         "follow-redirects": "^1.10.0"
       }
     },
-    "btoa": {
-      "version": "1.2.1",
-      "resolved": "https://registry.npmjs.org/btoa/-/btoa-1.2.1.tgz",
-      "integrity": "sha512-SB4/MIGlsiVkMcHmT+pSmIPoNDoHg+7cMzmt3Uxt628MTz2487DKSqK/fuhFBrkuqrYv5UCEnACpF4dTFNKc/g=="
-    },
     "dotenv": {
       "version": "8.2.0",
       "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-8.2.0.tgz",
@@ -26,16 +21,6 @@
       "version": "1.13.0",
       "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.13.0.tgz",
       "integrity": "sha512-aq6gF1BEKje4a9i9+5jimNFIpq4Q1WiwBToeRK5NvZBd/TRsmW8BsJfOEGkr76TbOyPVD3OVDN910EcUNtRYEA=="
-    },
-    "js-base64": {
-      "version": "3.6.0",
-      "resolved": "https://registry.npmjs.org/js-base64/-/js-base64-3.6.0.tgz",
-      "integrity": "sha512-wVdUBYQeY2gY73RIlPrysvpYx+2vheGo8Y1SNQv/BzHToWpAZzJU7Z6uheKMAe+GLSBig5/Ps2nxg/8tRB73xg=="
-    },
-    "qs": {
-      "version": "6.9.4",
-      "resolved": "https://registry.npmjs.org/qs/-/qs-6.9.4.tgz",
-      "integrity": "sha512-A1kFqHekCTM7cz0udomYUoYNWjBebHm/5wzU/XqrBRBNWectVH0QIiN+NEcZ0Dte5hvzHwbr8+XQmguPhJ6WdQ=="
     }
   }
 }
diff --git a/authentication/oauth-client-credentials/package.json b/authentication/oauth-client-credentials/package.json
new file mode 100644
index 0000000..dccba45
--- /dev/null
+++ b/authentication/oauth-client-credentials/package.json
@@ -0,0 +1,15 @@
+{
+  "name": "uphold-client-credentials-oauth-sample",
+  "version": "0.0.1",
+  "description": "Demo project to make authenticated requests to Uphold's REST API using the client credentials OAuth flow",
+  "license": "MIT",
+  "main": "index.js",
+  "type": "module",
+  "dependencies": {
+    "axios": "^0.20.0",
+    "dotenv": "^8.2.0"
+  },
+  "engines": {
+    "node": ">=13.14"
+  }
+}
diff --git a/rest-api/javascript/authentication/personal-access-token/.env.example b/authentication/personal-access-token/.env.example
similarity index 100%
rename from rest-api/javascript/authentication/personal-access-token/.env.example
rename to authentication/personal-access-token/.env.example
diff --git a/rest-api/javascript/authentication/client-credential-flow/.gitignore b/authentication/personal-access-token/.gitignore
similarity index 51%
rename from rest-api/javascript/authentication/client-credential-flow/.gitignore
rename to authentication/personal-access-token/.gitignore
index 28a76fd..2d7ec5c 100644
--- a/rest-api/javascript/authentication/client-credential-flow/.gitignore
+++ b/authentication/personal-access-token/.gitignore
@@ -1,3 +1,2 @@
 .env
 node_modules/
-package-lock.json
diff --git a/rest-api/javascript/authentication/personal-access-token/README.md b/authentication/personal-access-token/README.md
similarity index 73%
rename from rest-api/javascript/authentication/personal-access-token/README.md
rename to authentication/personal-access-token/README.md
index d8118ea..54b2818 100644
--- a/rest-api/javascript/authentication/personal-access-token/README.md
+++ b/authentication/personal-access-token/README.md
@@ -1,4 +1,4 @@
-# Client credentials PAT
+# Personal Access Token (PAT)
 
 This sample project demonstrates how to authenticate in the Uphold API using a Personal Access Token (PAT).
 For further background, please refer to the [API documentation](https://uphold.com/en/developer/api/documentation)
@@ -10,20 +10,21 @@ For further background, please refer to the [API documentation](https://uphold.c
 This sample project performs the following actions:
 
 - Create a new PAT
-- List all created PAT's associated to this account
+- List all created PATs associated to this account
 
 **Important notice:** If the account has two-factor authentication (2FA) active, a one-time-password (OTP) must be passed when creating PATs.
 In the Sandbox environment, the special OTP value `000000` can be passed for convenience, as can be seen in the `index.js` file. In production, you would need to use an actual TOTP code provided by your chosen authenticator app (e.g. Google Authenticator).
 
 ## Requirements
 
-- `node` v13.14.0 +
+- Node.js v13.14.0 or later
+- An account at <https://sandbox.uphold.com>
 
 ## Setup
 
-- run `npm install` (or `yarn install`)
-- create a `.env` file based on the `.env.example` file, and populate it with the required data
+- Run `npm install` (or `yarn install`).
+- Create a `.env` file based on the `.env.example` file, and populate it with the required data.
 
 ## Run
 
-- run `node index.js`
+- Run `node index.js`.
diff --git a/authentication/personal-access-token/index.js b/authentication/personal-access-token/index.js
new file mode 100644
index 0000000..65d3667
--- /dev/null
+++ b/authentication/personal-access-token/index.js
@@ -0,0 +1,44 @@
+/**
+ * Dependencies.
+ */
+
+import { createNewPAT, getAuthenticationMethods, getUserPATs } from "./personal-access-token.js";
+import fs from "fs";
+
+(async () => {
+  // Check for the .env file.
+  if (fs.existsSync('./.env') === false) {
+    console.log("Missing .env file. Please follow the steps described in the README.");
+    return;
+  }
+
+  try {
+    // Get list of authentication methods.
+    const authMethods = await getAuthenticationMethods();
+
+    // In the Sandbox environment, the special OTP value `000000` can be passed for convenience.
+    const totp = {
+      OTPMethodId: "",
+      OTPToken: "000000",
+    };
+
+    // Try to determine if the authenticated account has two-factor authentication (2FA) active,
+    // as that will require a one-time password (OTP) for the PAT creation request.
+    const totpCheck =
+      authMethods != null ? authMethods.find((x) => x.type === "totp") : null;
+    if (totpCheck) {
+      totp.OTPMethodId = totpCheck.id;
+    }
+
+    // Get a new Personal Access Token (PAT).
+    const token = await createNewPAT(totp);
+    console.log("Successfully obtained a new Personal Access Token (PAT):", token.accessToken);
+
+    // Test the new token by making an authenticated call to the API.
+    const userPATs = await getUserPATs(token.accessToken);
+    console.log("Output from test API call:", userPATs);
+  } catch (error) {
+    // Unexpected error.
+    return;
+  }
+})();
diff --git a/authentication/personal-access-token/package-lock.json b/authentication/personal-access-token/package-lock.json
new file mode 100644
index 0000000..805092b
--- /dev/null
+++ b/authentication/personal-access-token/package-lock.json
@@ -0,0 +1,26 @@
+{
+  "name": "uphold-pat-sample",
+  "version": "0.0.1",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "axios": {
+      "version": "0.20.0",
+      "resolved": "https://registry.npmjs.org/axios/-/axios-0.20.0.tgz",
+      "integrity": "sha512-ANA4rr2BDcmmAQLOKft2fufrtuvlqR+cXNNinUmvfeSNCOF98PZL+7M/v1zIdGo7OLjEA9J2gXJL+j4zGsl0bA==",
+      "requires": {
+        "follow-redirects": "^1.10.0"
+      }
+    },
+    "dotenv": {
+      "version": "8.2.0",
+      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-8.2.0.tgz",
+      "integrity": "sha512-8sJ78ElpbDJBHNeBzUbUVLsqKdccaa/BXF1uPTw3GrvQTBgrQrtObr2mUrE38vzYd8cEv+m/JBfDLioYcfXoaw=="
+    },
+    "follow-redirects": {
+      "version": "1.13.0",
+      "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.13.0.tgz",
+      "integrity": "sha512-aq6gF1BEKje4a9i9+5jimNFIpq4Q1WiwBToeRK5NvZBd/TRsmW8BsJfOEGkr76TbOyPVD3OVDN910EcUNtRYEA=="
+    }
+  }
+}
diff --git a/authentication/personal-access-token/package.json b/authentication/personal-access-token/package.json
new file mode 100644
index 0000000..2061fd9
--- /dev/null
+++ b/authentication/personal-access-token/package.json
@@ -0,0 +1,15 @@
+{
+  "name": "uphold-pat-sample",
+  "version": "0.0.1",
+  "description": "Demo project to make authenticated requests to Uphold's REST API using a Personal Access Token (PAT)",
+  "license": "MIT",
+  "main": "index.js",
+  "type": "module",
+  "dependencies": {
+    "axios": "^0.20.0",
+    "dotenv": "^8.2.0"
+  },
+  "engines": {
+    "node": ">=13.14"
+  }
+}
diff --git a/authentication/personal-access-token/personal-access-token.js b/authentication/personal-access-token/personal-access-token.js
new file mode 100644
index 0000000..e641956
--- /dev/null
+++ b/authentication/personal-access-token/personal-access-token.js
@@ -0,0 +1,103 @@
+/**
+ * Dependencies.
+ */
+
+import axios from "axios";
+import dotenv from "dotenv";
+import path from "path";
+
+// Dotenv configuration.
+dotenv.config({ path: path.resolve() + "/.env" });
+
+// Authentication credentials.
+const auth = Buffer.from(process.env.USERNAME + ":" + process.env.PASSWORD).toString("base64");
+
+/**
+ * Format API error response for printing in console.
+ */
+
+function formatError(error) {
+  const responseStatus = `${error.response.status} (${error.response.statusText})`;
+
+  console.log(
+    `Request failed with HTTP status code ${responseStatus}`,
+    JSON.stringify({
+      url: error.config.url,
+      response: error.response.data
+    }, null, 2)
+  );
+
+  throw error;
+}
+
+/**
+ * Get list of authentication methods, using basic authentication (username and password).
+ */
+
+export async function getAuthenticationMethods() {
+  try {
+    const response = await axios.request({
+      method: "GET",
+      url: `${process.env.BASE_URL}/v0/me/authentication_methods`,
+      headers: {
+        Authorization: `Basic ${auth}`,
+      },
+    });
+
+    return response.data;
+  } catch (error) {
+    formatError(error);
+  }
+}
+
+/**
+ * Create a Personal Access Token (PAT), using basic authentication (username and password).
+ * The time-based one-time password (TOTP) parameter
+ * is typically provided by an OTP application, e.g. Google Authenticator.
+ */
+
+export async function createNewPAT(totp) {
+  const headers = {
+    Authorization: `Basic ${auth}`,
+    "content-type": "application/json",
+  };
+
+  // Set OTP headers if the totp parameter is passed.
+  if (totp.OTPMethodId) {
+    headers["OTP-Method-Id"] = totp.OTPMethodId;
+    headers["OTP-Token"] = totp.OTPToken;
+  }
+
+  try {
+    const response = await axios.request({
+      method: "POST",
+      url: `${process.env.BASE_URL}/v0/me/tokens`,
+      data: { description: process.env.PAT_DESCRIPTION },
+      headers,
+    });
+
+    return response.data;
+  } catch (error) {
+    formatError(error);
+  }
+}
+
+/**
+ * Get list of Personal Access Tokens (PATs), using an existing PAT.
+ */
+
+export async function getUserPATs(accessToken) {
+  try {
+    const response = await axios.request({
+      method: "GET",
+      url: `${process.env.BASE_URL}/v0/me/tokens`,
+      headers: {
+        Authorization: `Bearer ${accessToken}`,
+      },
+    });
+
+    return response.data;
+  } catch (error) {
+    formatError(error);
+  }
+}
diff --git a/rest-api/javascript/authentication/client-credential-flow/cc-flow.js b/rest-api/javascript/authentication/client-credential-flow/cc-flow.js
deleted file mode 100644
index 287cdb9..0000000
--- a/rest-api/javascript/authentication/client-credential-flow/cc-flow.js
+++ /dev/null
@@ -1,67 +0,0 @@
-/**
- * Dependencies.
- */
-
-import axios from "axios";
-import b64Pkg from "js-base64";
-import dotenv from "dotenv";
-import path from "path";
-import qs from "qs";
-const { encode } = b64Pkg;
-
-/**
- * Dotenv configuration.
- */
-
-dotenv.config({ path: path.resolve() + "/.env" });
-
-/**
- * Get Token.
- */
-
-export async function getToken() {
-  // Base64-encoded authentication credentials
-  const auth = encode(process.env.CLIENT_ID + ":" + process.env.CLIENT_SECRET);
-
-  // Options for the Axios request
-  const options = {
-    method: "POST",
-    headers: {
-      Authorization: "Basic " + auth,
-      "content-type": "application/x-www-form-urlencoded",
-    },
-    data: qs.stringify({ grant_type: "client_credentials" }),
-    url: `${process.env.BASE_URL}/oauth2/token`,
-  };
-
-  const data = axios(options)
-    .then((response) => {
-      return response.data;
-    })
-    .catch((error) => {
-      error.response.data.errors
-        ? console.log(JSON.stringify(error.response.data.errors, null, 2))
-        : console.log(JSON.stringify(error, null, 2));
-      throw error;
-    });
-
-  return data;
-}
-
-/**
- * Get assets.
- */
-
-export async function getAssets(token) {
-  try {
-    const response = await axios.get(`${process.env.BASE_URL}/v0/assets`, {
-      headers: {
-        Authorization: `${token.token_type} ${token.access_token}`,
-      },
-    });
-    return response.data;
-  } catch (error) {
-    console.log(JSON.stringify(error, null, 2));
-    throw error;
-  }
-}
diff --git a/rest-api/javascript/authentication/client-credential-flow/index.js b/rest-api/javascript/authentication/client-credential-flow/index.js
deleted file mode 100644
index e00b831..0000000
--- a/rest-api/javascript/authentication/client-credential-flow/index.js
+++ /dev/null
@@ -1,12 +0,0 @@
-/**
- * Dependencies.
- */
-
-import { getAssets, getToken } from "./cc-flow.js";
-
-(async () => {
-  // Get `bearer` token from sandbox
-  const token = await getToken();
-  // Log the output of an API call using the token, to confirm that it works
-  console.log(await getAssets(token));
-})();
diff --git a/rest-api/javascript/authentication/client-credential-flow/package.json b/rest-api/javascript/authentication/client-credential-flow/package.json
deleted file mode 100644
index 048f67c..0000000
--- a/rest-api/javascript/authentication/client-credential-flow/package.json
+++ /dev/null
@@ -1,22 +0,0 @@
-{
-  "name": "uphold-ccf",
-  "version": "0.0.1",
-  "description": "Uphold Client Credential Flow Example",
-  "license": "MIT",
-  "main": "index.js",
-  "type": "module",
-  "dependencies": {
-    "axios": "^0.20.0",
-    "btoa": "^1.2.1",
-    "dotenv": "^8.2.0",
-    "js-base64": "^3.5.2",
-    "qs": "^6.9.4",
-    "require": "^2.4.20"
-  },
-  "engines": {
-    "node": ">=13.14"
-  },
-  "scripts": {
-    "run": "node index.js "
-  }
-}
diff --git a/rest-api/javascript/authentication/client-credential-flow/yarn.lock b/rest-api/javascript/authentication/client-credential-flow/yarn.lock
deleted file mode 100644
index 1a49cde..0000000
--- a/rest-api/javascript/authentication/client-credential-flow/yarn.lock
+++ /dev/null
@@ -1,86 +0,0 @@
-# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
-# yarn lockfile v1
-
-
-amdefine@>=0.0.4:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/amdefine/-/amdefine-1.0.1.tgz#4a5282ac164729e93619bcfd3ad151f817ce91f5"
-  integrity sha1-SlKCrBZHKek2Gbz9OtFR+BfOkfU=
-
-async@~0.2.6:
-  version "0.2.10"
-  resolved "https://registry.yarnpkg.com/async/-/async-0.2.10.tgz#b6bbe0b0674b9d719708ca38de8c237cb526c3d1"
-  integrity sha1-trvgsGdLnXGXCMo43owjfLUmw9E=
-
-axios@^0.20.0:
-  version "0.20.0"
-  resolved "https://registry.yarnpkg.com/axios/-/axios-0.20.0.tgz#057ba30f04884694993a8cd07fa394cff11c50bd"
-  integrity sha512-ANA4rr2BDcmmAQLOKft2fufrtuvlqR+cXNNinUmvfeSNCOF98PZL+7M/v1zIdGo7OLjEA9J2gXJL+j4zGsl0bA==
-  dependencies:
-    follow-redirects "^1.10.0"
-
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-  version "1.2.1"
-  resolved "https://registry.yarnpkg.com/btoa/-/btoa-1.2.1.tgz#01a9909f8b2c93f6bf680ba26131eb30f7fa3d73"
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-
-dotenv@^8.2.0:
-  version "8.2.0"
-  resolved "https://registry.yarnpkg.com/dotenv/-/dotenv-8.2.0.tgz#97e619259ada750eea3e4ea3e26bceea5424b16a"
-  integrity sha512-8sJ78ElpbDJBHNeBzUbUVLsqKdccaa/BXF1uPTw3GrvQTBgrQrtObr2mUrE38vzYd8cEv+m/JBfDLioYcfXoaw==
-
-follow-redirects@^1.10.0:
-  version "1.13.0"
-  resolved "https://registry.yarnpkg.com/follow-redirects/-/follow-redirects-1.13.0.tgz#b42e8d93a2a7eea5ed88633676d6597bc8e384db"
-  integrity sha512-aq6gF1BEKje4a9i9+5jimNFIpq4Q1WiwBToeRK5NvZBd/TRsmW8BsJfOEGkr76TbOyPVD3OVDN910EcUNtRYEA==
-
-js-base64@^3.5.2:
-  version "3.5.2"
-  resolved "https://registry.yarnpkg.com/js-base64/-/js-base64-3.5.2.tgz#3cc800e4f10812b55fb5ec53e7cabaef35dc6d3c"
-  integrity sha512-VG2qfvV5rEQIVxq9UmAVyWIaOdZGt9M16BLu8vFkyWyhv709Hyg4nKUb5T+Ru+HmAr9RHdF+kQDKAhbJlcdKeQ==
-
-optimist@~0.3.5:
-  version "0.3.7"
-  resolved "https://registry.yarnpkg.com/optimist/-/optimist-0.3.7.tgz#c90941ad59e4273328923074d2cf2e7cbc6ec0d9"
-  integrity sha1-yQlBrVnkJzMokjB00s8ufLxuwNk=
-  dependencies:
-    wordwrap "~0.0.2"
-
-qs@^6.9.4:
-  version "6.9.4"
-  resolved "https://registry.yarnpkg.com/qs/-/qs-6.9.4.tgz#9090b290d1f91728d3c22e54843ca44aea5ab687"
-  integrity sha512-A1kFqHekCTM7cz0udomYUoYNWjBebHm/5wzU/XqrBRBNWectVH0QIiN+NEcZ0Dte5hvzHwbr8+XQmguPhJ6WdQ==
-
-require@^2.4.20:
-  version "2.4.20"
-  resolved "https://registry.yarnpkg.com/require/-/require-2.4.20.tgz#66cb6baaabb65de8a71d793f5c65fd184f3798b6"
-  integrity sha1-Zstrqqu2XeinHXk/XGX9GE83mLY=
-  dependencies:
-    std "0.1.40"
-    uglify-js "2.3.0"
-
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-  version "0.1.43"
-  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.1.43.tgz#c24bc146ca517c1471f5dacbe2571b2b7f9e3346"
-  integrity sha1-wkvBRspRfBRx9drL4lcbK3+eM0Y=
-  dependencies:
-    amdefine ">=0.0.4"
-
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-  version "0.1.40"
-  resolved "https://registry.yarnpkg.com/std/-/std-0.1.40.tgz#3678a5f65094d9e1b6b5e26edbfc0212b8342b71"
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-
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-  version "2.3.0"
-  resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-2.3.0.tgz#2cdec16d378a8a2b6ecfb6989784cf8b7ae5491f"
-  integrity sha1-LN7BbTeKiituz7aYl4TPi3rlSR8=
-  dependencies:
-    async "~0.2.6"
-    optimist "~0.3.5"
-    source-map "~0.1.7"
-
-wordwrap@~0.0.2:
-  version "0.0.3"
-  resolved "https://registry.yarnpkg.com/wordwrap/-/wordwrap-0.0.3.tgz#a3d5da6cd5c0bc0008d37234bbaf1bed63059107"
-  integrity sha1-o9XabNXAvAAI03I0u68b7WMFkQc=
diff --git a/rest-api/javascript/authentication/personal-access-token/cc-pat.js b/rest-api/javascript/authentication/personal-access-token/cc-pat.js
deleted file mode 100644
index a93f387..0000000
--- a/rest-api/javascript/authentication/personal-access-token/cc-pat.js
+++ /dev/null
@@ -1,109 +0,0 @@
-/**
- * Dependencies.
- */
-
-import axios from "axios";
-import b64Pkg from "js-base64";
-import dotenv from "dotenv";
-import path from "path";
-
-const { encode } = b64Pkg;
-dotenv.config({ path: path.resolve() + "/.env" });
-
-/**
- * Get list of authentication methods, using basic authentication (username and password).
- */
-
-export async function getAuthenticationMethods() {
-  // Base64-encoded authentication credentials
-  const auth = encode(process.env.USERNAME + ":" + process.env.PASSWORD);
-
-  // Set GET options for Axios
-  const options = {
-    method: "GET",
-    headers: {
-      Authorization: "Basic " + auth,
-    },
-    url: `${process.env.BASE_URL}/v0/me/authentication_methods`,
-  };
-
-  const data = axios(options)
-    .then((response) => {
-      return response.data;
-    })
-    .catch((error) => {
-      error.response.data.errors
-        ? console.log(JSON.stringify(error.response.data.errors, null, 2))
-        : console.log(JSON.stringify(error, null, 2));
-      throw error;
-    });
-
-  return data;
-}
-
-/**
- * Create a Personal Access Token (PAT), using basic authentication (username and password).
- * The time-based one-time password (TOTP) parameter
- * is typically provided by an OTP application, e.g. Google Authenticator.
- */
-
-export async function createNewPAT(totp) {
-  // Base64-encoded authentication credentials
-  const auth = encode(process.env.USERNAME + ":" + process.env.PASSWORD);
-
-  let headers = {
-    "Authorization": "Basic " + auth,
-    "content-type": "application/json",
-  };
-
-  // Set OTP headers if the totp parameter is passed
-  const otpHeaders = {
-    "OTP-Method-Id": totp.OTPMethodId,
-    "OTP-Token": totp.OTPToken,
-  };
-
-  if (totp.OTPMethodId) {
-    headers = { ...headers, ...otpHeaders };
-  }
-
-  // Set post options for axios
-  const options = {
-    method: "POST",
-    headers,
-    data: {
-      description: process.env.PAT_DESCRIPTION,
-    },
-    url: `${process.env.BASE_URL}/v0/me/tokens`,
-  };
-
-  const data = axios(options)
-    .then((response) => {
-      return response.data;
-    })
-    .catch((error) => {
-      error.response.data.errors
-        ? console.log(JSON.stringify(error.response.data.errors, null, 2))
-        : console.log(JSON.stringify(error, null, 2));
-      throw error;
-    });
-
-  return data;
-}
-
-/**
- * Get list of Personal Access Tokens (PATs), using a bearer token (client credentials.
- */
-
-export async function getMyPATs(accessToken) {
-  try {
-    const r = await axios.get(`${process.env.BASE_URL}/v0/me/tokens`, {
-      headers: {
-        Authorization: `Bearer ${accessToken}`,
-      },
-    });
-    return r.data;
-  } catch (error) {
-    console.log(JSON.stringify(error, null, 2));
-    throw error;
-  }
-}
diff --git a/rest-api/javascript/authentication/personal-access-token/index.js b/rest-api/javascript/authentication/personal-access-token/index.js
deleted file mode 100644
index 35e8711..0000000
--- a/rest-api/javascript/authentication/personal-access-token/index.js
+++ /dev/null
@@ -1,40 +0,0 @@
-/**
- * Dependencies.
- */
-
-import {
-  createNewPAT,
-  getAuthenticationMethods,
-  getMyPATs,
-} from "./cc-pat.js";
-
-(async () => {
-  // Get list of authentication methods
-  const authMethods = await getAuthenticationMethods();
-
-  // In the Sandbox environment, the special OTP value `000000` can be passed for convenience.
-  const totp = {
-    OTPMethodId: "",
-    OTPToken: "000000",
-  };
-
-  // Try to determine if the authenticated account has two-factor authentication (2FA) active,
-  // as that will require a one-time password (OTP) for the PAT creation request.
-  const totpCheck =
-    authMethods != null ? authMethods.find((x) => x.type === "totp") : null;
-  if (totpCheck) {
-    totp.OTPMethodId = totpCheck.id;
-  }
-
-  // Create a PAT
-  const newPAT = await createNewPAT(totp);
-
-  if (newPAT.accessToken) {
-    console.log("New Personal Access Token (PAT) created with success");
-    console.debug(newPAT.accessToken);
-
-    // Use the newly created PAT to list all PATs for this account
-    console.log("List of available PATs");
-    console.log(await getMyPATs(newPAT.accessToken));
-  }
-})();
diff --git a/rest-api/javascript/authentication/personal-access-token/package.json b/rest-api/javascript/authentication/personal-access-token/package.json
deleted file mode 100644
index 45fd771..0000000
--- a/rest-api/javascript/authentication/personal-access-token/package.json
+++ /dev/null
@@ -1,21 +0,0 @@
-{
-  "name": "uphold-ccp",
-  "version": "0.0.1",
-  "description": "Uphold rest Api test client credential PAT example",
-  "license": "MIT",
-  "main": "index.js",
-  "type": "module",
-  "dependencies": {
-    "axios": "^0.20.0",
-    "btoa": "^1.2.1",
-    "dotenv": "^8.2.0",
-    "js-base64": "^3.5.2",
-    "qs": "^6.9.4"
-  },
-  "engines": {
-    "node": ">=13.14"
-  },
-  "scripts": {
-    "run": "node index.js "
-  }
-}
diff --git a/rest-api/javascript/authentication/personal-access-token/yarn.lock b/rest-api/javascript/authentication/personal-access-token/yarn.lock
deleted file mode 100644
index 494b63e..0000000
--- a/rest-api/javascript/authentication/personal-access-token/yarn.lock
+++ /dev/null
@@ -1,35 +0,0 @@
-# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
-# yarn lockfile v1
-
-
-axios@^0.20.0:
-  version "0.20.0"
-  resolved "https://registry.yarnpkg.com/axios/-/axios-0.20.0.tgz#057ba30f04884694993a8cd07fa394cff11c50bd"
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-  dependencies:
-    follow-redirects "^1.10.0"
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-  resolved "https://registry.yarnpkg.com/js-base64/-/js-base64-3.5.2.tgz#3cc800e4f10812b55fb5ec53e7cabaef35dc6d3c"
-  integrity sha512-VG2qfvV5rEQIVxq9UmAVyWIaOdZGt9M16BLu8vFkyWyhv709Hyg4nKUb5T+Ru+HmAr9RHdF+kQDKAhbJlcdKeQ==
-
-qs@^6.9.4:
-  version "6.9.4"
-  resolved "https://registry.yarnpkg.com/qs/-/qs-6.9.4.tgz#9090b290d1f91728d3c22e54843ca44aea5ab687"
-  integrity sha512-A1kFqHekCTM7cz0udomYUoYNWjBebHm/5wzU/XqrBRBNWectVH0QIiN+NEcZ0Dte5hvzHwbr8+XQmguPhJ6WdQ==
diff --git a/rest-api/javascript/authentication/web-application-flow/authorization-code-flow.js b/rest-api/javascript/authentication/web-application-flow/authorization-code-flow.js
deleted file mode 100644
index a6e23ef..0000000
--- a/rest-api/javascript/authentication/web-application-flow/authorization-code-flow.js
+++ /dev/null
@@ -1,90 +0,0 @@
-/**
- * Dependencies.
- */
-
-import axios from "axios";
-import b64Pkg from "js-base64";
-import dotenv from "dotenv";
-import qs from "qs";
-import path from "path";
-
-const { encode } = b64Pkg;
-
-/**
- * Dotenv configuration.
- */
-
- dotenv.config({ path: path.resolve() + "/.env" });
-
-/**
- * Compose error page.
- */
-
-export function composeErrorPage(data, state) {
-  let content = "<h1>Something went wrong.</h1>";
-
-  if (data.state && data.state !== state) {
-    content +=
-      `<p>The received state (<code>${data.state}</code>)
-      does not match the expected value: <code>${state}</code>.</p>`;
-  } else if (Object.values(data).length) {
-    content += "<p>Here's what Uphold's servers returned:</p>";
-    content += `<pre>${JSON.stringify(data, null, 4)}</pre>`;
-  } else {
-    content += "<p>This page should be reached at the end of an OAuth authorization process.</p>";
-    content += "<p>Please confirm that you followed the steps in the README.</p>";
-  }
-
-  return content;
-}
-
-/**
- * Get assets.
- */
-
-export async function getAssets(token) {
-  try {
-    const response = await axios.get(`${process.env.BASE_URL}/v0/assets`, {
-      headers: {
-        Authorization: `${token.token_type} ${token.access_token}`,
-      },
-    });
-    return response.data;
-  } catch (error) {
-    console.log(JSON.stringify(error, null, 2));
-    throw error;
-  }
-}
-
-/**
- * Get Token.
- */
-
-export async function getToken(code) {
-  // Base64-encoded authentication credentials
-  const auth = encode(process.env.CLIENT_ID + ":" + process.env.CLIENT_SECRET);
-
-  // set POST options for Axios
-  const options = {
-    method: "POST",
-    headers: {
-      Authorization: "Basic " + auth,
-      "content-type": "application/x-www-form-urlencoded",
-    },
-    data: qs.stringify({ code, grant_type: "client_credentials" }),
-    url: `${process.env.BASE_URL}/oauth2/token`,
-  };
-
-  const data = axios(options)
-    .then((response) => {
-      return response.data;
-    })
-    .catch((error) => {
-      error.response.data.errors
-        ? console.log(JSON.stringify(error.response.data.errors, null, 2))
-        : console.log(JSON.stringify(error, null, 2));
-      throw error;
-    });
-
-  return data;
-}
diff --git a/rest-api/javascript/authentication/web-application-flow/index.js b/rest-api/javascript/authentication/web-application-flow/index.js
deleted file mode 100644
index 948ba05..0000000
--- a/rest-api/javascript/authentication/web-application-flow/index.js
+++ /dev/null
@@ -1,81 +0,0 @@
-/**
- * Dependencies.
- */
-
-import dotenv from "dotenv";
-import express from "express";
-import fs from "fs";
-import https from "https";
-import path from "path";
-import { randomBytes } from "crypto";
-import { composeErrorPage, getAssets, getToken } from "./authorization-code-flow.js";
-
-/**
- * Dotenv configuration.
- */
-
-dotenv.config({ path: path.resolve() + "/.env" });
-
-/**
- * Server configuration.
- */
-
-const app = express();
-const port = process.env.SERVER_PORT || 3000;
-const state = randomBytes(8).toString('hex');
-
-/**
- * Main page.
- */
-
-app.get("/", async (req, res) => {
-  // Compose the authorization URL. This assumes the `user:read` scope has been activated for this application.
-  const authorizationUrl = 'https://sandbox.uphold.com/authorize/'
-    + process.env.CLIENT_ID
-    + '?scope=user:read'
-    + '&state=' + state;
-
-  res.send(
-    `<h1>Demo app server</h1>
-    <p>Please <a href="${authorizationUrl}">authorize this app</a> on Uphold's Sandbox.</p>`
-  );
-});
-
-
-/**
- * Callback URL endpoint.
- */
-
-app.get("/callback", async (req, res) => {
-  // Show an error page if the code wasn't returned or the state doesn't match what we sent.
-  if (!req.query.code || req.query.state !== state) {
-    res.send(composeErrorPage(req.query, state));
-  }
-
-  // Exchange the short-lived authorization code for a long-lived access token.
-  const token = await getToken(req.query.code);
-  console.log(`Authorization code ${req.query.code} successfully exchanged for access token:`, token);
-
-  // Test the new token by making a call to the API.
-  const assets = await getAssets(token);
-  console.log("Output from test API call:", assets[0]);
-
-  res.send(
-    `<h1>Success!</h1>
-    <p>The OAuth authorization code has been successfully exchanged for an access token.</p>`
-  );
-});
-
-/**
- * Run server.
- */
-
-https
-  .createServer({
-    key: fs.readFileSync("./key.pem"),
-    cert: fs.readFileSync("./cert.pem"),
-    passphrase: "test",
-  }, app)
-  .listen(port, () => {
-    console.log(`Server running at https://localhost:${port}`);
-  });
diff --git a/rest-api/javascript/authentication/web-application-flow/package-lock.json b/rest-api/javascript/authentication/web-application-flow/package-lock.json
deleted file mode 100644
index e80b9a0..0000000
--- a/rest-api/javascript/authentication/web-application-flow/package-lock.json
+++ /dev/null
@@ -1,1252 +0,0 @@
-{
-    "name": "uphold-wap",
-    "version": "0.0.1",
-    "lockfileVersion": 1,
-    "requires": true,
-    "dependencies": {
-        "@sindresorhus/is": {
-            "version": "0.14.0",
-            "resolved": "https://registry.npmjs.org/@sindresorhus/is/-/is-0.14.0.tgz",
-            "integrity": "sha512-9NET910DNaIPngYnLLPeg+Ogzqsi9uM4mSboU5y6p8S5DzMTVEsJZrawi+BoDNUVBa2DhJqQYUFvMDfgU062LQ=="
-        },
-        "@szmarczak/http-timer": {
-            "version": "1.1.2",
-            "resolved": "https://registry.npmjs.org/@szmarczak/http-timer/-/http-timer-1.1.2.tgz",
-            "integrity": "sha512-XIB2XbzHTN6ieIjfIMV9hlVcfPU26s2vafYWQcZHWXHOxiaRZYEDKEwdl129Zyg50+foYV2jCgtrqSA6qNuNSA==",
-            "requires": {
-                "defer-to-connect": "^1.0.1"
-            }
-        },
-        "abbrev": {
-            "version": "1.1.1",
-            "resolved": "https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz",
-            "integrity": "sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q=="
-        },
-        "accepts": {
-            "version": "1.3.7",
-            "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.7.tgz",
-            "integrity": "sha512-Il80Qs2WjYlJIBNzNkK6KYqlVMTbZLXgHx2oT0pU/fjRHyEp+PEfEPY0R3WCwAGVOtauxh1hOxNgIf5bv7dQpA==",
-            "requires": {
-                "mime-types": "~2.1.24",
-                "negotiator": "0.6.2"
-            }
-        },
-        "ansi-align": {
-            "version": "3.0.0",
-            "resolved": "https://registry.npmjs.org/ansi-align/-/ansi-align-3.0.0.tgz",
-            "integrity": "sha512-ZpClVKqXN3RGBmKibdfWzqCY4lnjEuoNzU5T0oEFpfd/z5qJHVarukridD4juLO2FXMiwUQxr9WqQtaYa8XRYw==",
-            "requires": {
-                "string-width": "^3.0.0"
-            },
-            "dependencies": {
-                "string-width": {
-                    "version": "3.1.0",
-                    "resolved": "https://registry.npmjs.org/string-width/-/string-width-3.1.0.tgz",
-                    "integrity": "sha512-vafcv6KjVZKSgz06oM/H6GDBrAtz8vdhQakGjFIvNrHA6y3HCF1CInLy+QLq8dTJPQ1b+KDUqDFctkdRW44e1w==",
-                    "requires": {
-                        "emoji-regex": "^7.0.1",
-                        "is-fullwidth-code-point": "^2.0.0",
-                        "strip-ansi": "^5.1.0"
-                    }
-                }
-            }
-        },
-        "ansi-regex": {
-            "version": "4.1.0",
-            "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-4.1.0.tgz",
-            "integrity": "sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg=="
-        },
-        "ansi-styles": {
-            "version": "4.3.0",
-            "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-4.3.0.tgz",
-            "integrity": "sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg==",
-            "requires": {
-                "color-convert": "^2.0.1"
-            }
-        },
-        "anymatch": {
-            "version": "3.1.1",
-            "resolved": "https://registry.npmjs.org/anymatch/-/anymatch-3.1.1.tgz",
-            "integrity": "sha512-mM8522psRCqzV+6LhomX5wgp25YVibjh8Wj23I5RPkPppSVSjyKD2A2mBJmWGa+KN7f2D6LNh9jkBCeyLktzjg==",
-            "requires": {
-                "normalize-path": "^3.0.0",
-                "picomatch": "^2.0.4"
-            }
-        },
-        "array-flatten": {
-            "version": "1.1.1",
-            "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
-            "integrity": "sha1-ml9pkFGx5wczKPKgCJaLZOopVdI="
-        },
-        "axios": {
-            "version": "0.20.0",
-            "resolved": "https://registry.npmjs.org/axios/-/axios-0.20.0.tgz",
-            "integrity": "sha512-ANA4rr2BDcmmAQLOKft2fufrtuvlqR+cXNNinUmvfeSNCOF98PZL+7M/v1zIdGo7OLjEA9J2gXJL+j4zGsl0bA==",
-            "requires": {
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-            }
-        },
-        "balanced-match": {
-            "version": "1.0.0",
-            "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
-            "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c="
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-            "integrity": "sha512-1Yj8h9Q+QDF5FzhMs/c9+6UntbD5MkRfRwac8DoEm9ZfUBZ7tZ55YcGVAzEe4bXsdQHEk+s9S5wsOKVdZrw0tQ=="
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-            "integrity": "sha512-dhEPs72UPbDnAQJ9ZKMNTP6ptJaionhP5cBb541nXPlW60Jepo9RV/a4fX4XWW9CuFNK22krhrj1+rgzifNCsw==",
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-                "http-errors": "1.7.2",
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-                "qs": "6.7.0",
-                "raw-body": "2.4.0",
-                "type-is": "~1.6.17"
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-        "boxen": {
-            "version": "4.2.0",
-            "resolved": "https://registry.npmjs.org/boxen/-/boxen-4.2.0.tgz",
-            "integrity": "sha512-eB4uT9RGzg2odpER62bBwSLvUeGC+WbRjjyyFhGsKnc8wp/m0+hQsMUvUe3H2V0D5vw0nBdO1hCJoZo5mKeuIQ==",
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-                "camelcase": "^5.3.1",
-                "chalk": "^3.0.0",
-                "cli-boxes": "^2.2.0",
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-                "term-size": "^2.1.0",
-                "type-fest": "^0.8.1",
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-        "brace-expansion": {
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-            "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
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-        "braces": {
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-            "integrity": "sha512-b8um+L1RzM3WDSzvhm6gIz1yfTbBt6YTlcEKAvsmqCZZFw46z626lVj9j1yEPW33H5H+lBQpZMP1k8l+78Ha0A==",
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diff --git a/rest-api/javascript/authentication/web-application-flow/package.json b/rest-api/javascript/authentication/web-application-flow/package.json
deleted file mode 100644
index d0d2201..0000000
--- a/rest-api/javascript/authentication/web-application-flow/package.json
+++ /dev/null
@@ -1,21 +0,0 @@
-{
-    "name": "uphold-wap",
-    "version": "0.0.1",
-    "description": "Uphold rest Api test web application flow example",
-    "license": "MIT",
-    "type": "module",
-    "main": "app.js",
-    "dependencies": {
-        "axios": "^0.20.0",
-        "dotenv": "^8.2.0",
-        "express": "^4.17.1",
-        "js-base64": "^3.5.2",
-        "nodemon": "^2.0.2"
-    },
-    "engines": {
-        "node": ">=13.14"
-    },
-    "scripts": {
-        "run": "nodemon --inspect index.js "
-    }
-}
diff --git a/rest-api/javascript/transaction/client-create-transaction/ct-transaction.js b/rest-api/javascript/transaction/client-create-transaction/ct-transaction.js
deleted file mode 100644
index bf68509..0000000
--- a/rest-api/javascript/transaction/client-create-transaction/ct-transaction.js
+++ /dev/null
@@ -1,74 +0,0 @@
-/**
- * Dependencies.
- */
-
-import axios from "axios";
-import colors from "colors";
-import dotenv from "dotenv";
-import path from "path";
-
-colors.setTheme({
-  silly: "rainbow",
-  input: "grey",
-  verbose: "cyan",
-  prompt: "grey",
-  info: "green",
-  data: "grey",
-  help: "cyan",
-  warn: "yellow",
-  debug: "blue",
-  error: "red",
-});
-
-dotenv.config({ path: path.resolve() + "/.env" });
-
-/**
- * Create and commit a transaction.
- */
-
-export async function createAndCommitTransaction(data = {}, myCardID = null) {
-  const options = {
-    method: "POST",
-    headers: {
-      Authorization: `Bearer ${process.env.ACCESS_TOKEN}`,
-      "content-type": "application/json",
-    },
-    data,
-    url: `${process.env.BASE_URL}/v0/me/cards/${myCardID}/transactions?commit=true`,
-  };
-
-  const response = axios(options)
-    .then((response) => {
-      return response.data;
-    })
-    .catch((error) => {
-      error.response.data.errors
-        ? console.log(JSON.stringify(error.response.data.errors, null, 2).error)
-        : console.log(JSON.stringify(error, null, 2).error);
-      throw error;
-    });
-
-  return response;
-}
-
-/**
- * Get the first card with available balance (if one exists).
- */
-
-export async function getCardWithFunds() {
-  try {
-    const response = await axios.get(`${process.env.BASE_URL}/v0/me/cards`, {
-      headers: {
-        Authorization: `Bearer ${process.env.ACCESS_TOKEN}`,
-      },
-    });
-
-    // Get the the first card with nonzero available balance
-    return response.data.filter(card => { return Number(card.available) > 0 })[0];
-  } catch (error) {
-    error.response.data.errors
-      ? console.log(JSON.stringify(error.response.data.errors, null, 2).error)
-      : console.log(JSON.stringify(error, null, 2).error);
-    throw error;
-  }
-}
diff --git a/rest-api/javascript/transaction/client-create-transaction/index.js b/rest-api/javascript/transaction/client-create-transaction/index.js
deleted file mode 100644
index a0ea44c..0000000
--- a/rest-api/javascript/transaction/client-create-transaction/index.js
+++ /dev/null
@@ -1,34 +0,0 @@
-/**
- * Dependencies.
- */
-
-import _ from "lodash";
-import dotenv from "dotenv";
-import path from "path";
-import {
-  createAndCommitTransaction,
-  getCardWithFunds,
-} from "./ct-transaction.js";
-
-dotenv.config({ path: path.resolve() + "/.env" });
-
-(async () => {
-  // Locate a card that can be used as the source for the transaction.
-  const sourceCard = await getCardWithFunds();
-  // Define the destination as an email address.
-  const destination = `${process.env.DESTINATION_EMAIL_ACCOUNT}`;
-
-  const data = {
-    denomination: {
-      amount: "1",
-      currency: "USD",
-    },
-    destination,
-  };
-
-  const transaction = await createAndCommitTransaction(data, sourceCard.id);
-
-  if (transaction) {
-    console.log('Transaction:', transaction);
-  }
-})();
diff --git a/rest-api/javascript/transaction/client-create-transaction/package-lock.json b/rest-api/javascript/transaction/client-create-transaction/package-lock.json
deleted file mode 100644
index b8a2232..0000000
--- a/rest-api/javascript/transaction/client-create-transaction/package-lock.json
+++ /dev/null
@@ -1,51 +0,0 @@
-{
-  "name": "uphold-ct",
-  "version": "0.0.1",
-  "lockfileVersion": 1,
-  "requires": true,
-  "dependencies": {
-    "axios": {
-      "version": "0.20.0",
-      "resolved": "https://registry.npmjs.org/axios/-/axios-0.20.0.tgz",
-      "integrity": "sha512-ANA4rr2BDcmmAQLOKft2fufrtuvlqR+cXNNinUmvfeSNCOF98PZL+7M/v1zIdGo7OLjEA9J2gXJL+j4zGsl0bA==",
-      "requires": {
-        "follow-redirects": "^1.10.0"
-      }
-    },
-    "btoa": {
-      "version": "1.2.1",
-      "resolved": "https://registry.npmjs.org/btoa/-/btoa-1.2.1.tgz",
-      "integrity": "sha512-SB4/MIGlsiVkMcHmT+pSmIPoNDoHg+7cMzmt3Uxt628MTz2487DKSqK/fuhFBrkuqrYv5UCEnACpF4dTFNKc/g=="
-    },
-    "colors": {
-      "version": "1.4.0",
-      "resolved": "https://registry.npmjs.org/colors/-/colors-1.4.0.tgz",
-      "integrity": "sha512-a+UqTh4kgZg/SlGvfbzDHpgRu7AAQOmmqRHJnxhRZICKFUT91brVhNNt58CMWU9PsBbv3PDCZUHbVxuDiH2mtA=="
-    },
-    "dotenv": {
-      "version": "8.2.0",
-      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-8.2.0.tgz",
-      "integrity": "sha512-8sJ78ElpbDJBHNeBzUbUVLsqKdccaa/BXF1uPTw3GrvQTBgrQrtObr2mUrE38vzYd8cEv+m/JBfDLioYcfXoaw=="
-    },
-    "follow-redirects": {
-      "version": "1.13.0",
-      "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.13.0.tgz",
-      "integrity": "sha512-aq6gF1BEKje4a9i9+5jimNFIpq4Q1WiwBToeRK5NvZBd/TRsmW8BsJfOEGkr76TbOyPVD3OVDN910EcUNtRYEA=="
-    },
-    "js-base64": {
-      "version": "3.6.0",
-      "resolved": "https://registry.npmjs.org/js-base64/-/js-base64-3.6.0.tgz",
-      "integrity": "sha512-wVdUBYQeY2gY73RIlPrysvpYx+2vheGo8Y1SNQv/BzHToWpAZzJU7Z6uheKMAe+GLSBig5/Ps2nxg/8tRB73xg=="
-    },
-    "lodash": {
-      "version": "4.17.20",
-      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.20.tgz",
-      "integrity": "sha512-PlhdFcillOINfeV7Ni6oF1TAEayyZBoZ8bcshTHqOYJYlrqzRK5hagpagky5o4HfCzzd1TRkXPMFq6cKk9rGmA=="
-    },
-    "qs": {
-      "version": "6.9.4",
-      "resolved": "https://registry.npmjs.org/qs/-/qs-6.9.4.tgz",
-      "integrity": "sha512-A1kFqHekCTM7cz0udomYUoYNWjBebHm/5wzU/XqrBRBNWectVH0QIiN+NEcZ0Dte5hvzHwbr8+XQmguPhJ6WdQ=="
-    }
-  }
-}
diff --git a/rest-api/javascript/transaction/client-create-transaction/package.json b/rest-api/javascript/transaction/client-create-transaction/package.json
deleted file mode 100644
index df37cb9..0000000
--- a/rest-api/javascript/transaction/client-create-transaction/package.json
+++ /dev/null
@@ -1,23 +0,0 @@
-{
-  "name": "uphold-ct",
-  "version": "0.0.1",
-  "description": "Uphold rest Api test client transaction",
-  "license": "MIT",
-  "main": "index.js",
-  "type": "module",
-  "dependencies": {
-    "axios": "^0.20.0",
-    "btoa": "^1.2.1",
-    "colors": "^1.4.0",
-    "dotenv": "^8.2.0",
-    "js-base64": "^3.5.2",
-    "lodash": "^4.17.20",
-    "qs": "^6.9.4"
-  },
-  "engines": {
-    "node": ">=13"
-  },
-  "scripts": {
-    "run": "node index.js "
-  }
-}
diff --git a/rest-api/javascript/transaction/client-create-transaction/.env.example b/transactions/user-to-user-transaction/.env.example
similarity index 100%
rename from rest-api/javascript/transaction/client-create-transaction/.env.example
rename to transactions/user-to-user-transaction/.env.example
diff --git a/rest-api/javascript/authentication/personal-access-token/.gitignore b/transactions/user-to-user-transaction/.gitignore
similarity index 51%
rename from rest-api/javascript/authentication/personal-access-token/.gitignore
rename to transactions/user-to-user-transaction/.gitignore
index 28a76fd..2d7ec5c 100644
--- a/rest-api/javascript/authentication/personal-access-token/.gitignore
+++ b/transactions/user-to-user-transaction/.gitignore
@@ -1,3 +1,2 @@
 .env
 node_modules/
-package-lock.json
diff --git a/rest-api/javascript/transaction/client-create-transaction/README.md b/transactions/user-to-user-transaction/README.md
similarity index 100%
rename from rest-api/javascript/transaction/client-create-transaction/README.md
rename to transactions/user-to-user-transaction/README.md
diff --git a/rest-api/javascript/transaction/client-create-transaction/assets/transaction-scopes.png b/transactions/user-to-user-transaction/assets/transaction-scopes.png
similarity index 100%
rename from rest-api/javascript/transaction/client-create-transaction/assets/transaction-scopes.png
rename to transactions/user-to-user-transaction/assets/transaction-scopes.png
diff --git a/transactions/user-to-user-transaction/index.js b/transactions/user-to-user-transaction/index.js
new file mode 100644
index 0000000..0162cda
--- /dev/null
+++ b/transactions/user-to-user-transaction/index.js
@@ -0,0 +1,25 @@
+/**
+ * Dependencies.
+ */
+
+import { createAndCommitTransaction, getCardWithFunds } from "./user-to-user-transaction.js";
+import fs from "fs";
+
+(async () => {
+  // Check for the .env file.
+  if (fs.existsSync('./.env') === false) {
+    console.log("Missing .env file. Please follow the steps described in the README.");
+    return;
+  }
+
+  try {
+    // Locate a card that can be used as the source for the transaction.
+    const sourceCard = await getCardWithFunds();
+
+    // Create a transaction and log its outputs
+    console.log(await createAndCommitTransaction(sourceCard.id));
+  } catch (error) {
+    // Unexpected error.
+    return;
+  }
+})();
diff --git a/transactions/user-to-user-transaction/package-lock.json b/transactions/user-to-user-transaction/package-lock.json
new file mode 100644
index 0000000..3d0c9a3
--- /dev/null
+++ b/transactions/user-to-user-transaction/package-lock.json
@@ -0,0 +1,26 @@
+{
+  "name": "uphold-transaction-sample",
+  "version": "0.0.1",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "axios": {
+      "version": "0.20.0",
+      "resolved": "https://registry.npmjs.org/axios/-/axios-0.20.0.tgz",
+      "integrity": "sha512-ANA4rr2BDcmmAQLOKft2fufrtuvlqR+cXNNinUmvfeSNCOF98PZL+7M/v1zIdGo7OLjEA9J2gXJL+j4zGsl0bA==",
+      "requires": {
+        "follow-redirects": "^1.10.0"
+      }
+    },
+    "dotenv": {
+      "version": "8.2.0",
+      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-8.2.0.tgz",
+      "integrity": "sha512-8sJ78ElpbDJBHNeBzUbUVLsqKdccaa/BXF1uPTw3GrvQTBgrQrtObr2mUrE38vzYd8cEv+m/JBfDLioYcfXoaw=="
+    },
+    "follow-redirects": {
+      "version": "1.13.0",
+      "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.13.0.tgz",
+      "integrity": "sha512-aq6gF1BEKje4a9i9+5jimNFIpq4Q1WiwBToeRK5NvZBd/TRsmW8BsJfOEGkr76TbOyPVD3OVDN910EcUNtRYEA=="
+    }
+  }
+}
diff --git a/transactions/user-to-user-transaction/package.json b/transactions/user-to-user-transaction/package.json
new file mode 100644
index 0000000..9a897ab
--- /dev/null
+++ b/transactions/user-to-user-transaction/package.json
@@ -0,0 +1,15 @@
+{
+  "name": "uphold-transaction-sample",
+  "version": "0.0.1",
+  "description": "Demo project to perform a transaction from one Uphold user to another using Uphold's API",
+  "license": "MIT",
+  "main": "index.js",
+  "type": "module",
+  "dependencies": {
+    "axios": "^0.20.0",
+    "dotenv": "^8.2.0"
+  },
+  "engines": {
+    "node": ">=13.14"
+  }
+}
diff --git a/transactions/user-to-user-transaction/user-to-user-transaction.js b/transactions/user-to-user-transaction/user-to-user-transaction.js
new file mode 100644
index 0000000..eb8d127
--- /dev/null
+++ b/transactions/user-to-user-transaction/user-to-user-transaction.js
@@ -0,0 +1,79 @@
+/**
+ * Dependencies.
+ */
+
+import axios from "axios";
+import dotenv from "dotenv";
+import path from "path";
+
+// Dotenv configuration.
+dotenv.config({ path: path.resolve() + "/.env" });
+
+/**
+ * Format API error response for printing in console.
+ */
+
+function formatError(error) {
+  const responseStatus = `${error.response.status} (${error.response.statusText})`;
+
+  console.log(
+    `Request failed with HTTP status code ${responseStatus}`,
+    JSON.stringify({
+      url: error.config.url,
+      response: error.response.data
+    }, null, 2)
+  );
+
+  throw error;
+}
+
+/**
+ * Create and commit a 1 USD transaction from a specific card.
+ */
+
+export async function createAndCommitTransaction(sourceCardID = null) {
+  try {
+    const response = await axios.request({
+      method: "POST",
+      url: `${process.env.BASE_URL}/v0/me/cards/${sourceCardID}/transactions?commit=true`,
+      data: {
+        denomination: {
+          amount: "1",
+          currency: "USD",
+        },
+        destination: `${process.env.DESTINATION_EMAIL_ACCOUNT}`,
+      },
+      headers: {
+        Authorization: `Bearer ${process.env.ACCESS_TOKEN}`,
+        "content-type": "application/json",
+      },
+    });
+
+    return response.data;
+  } catch (error) {
+    formatError(error);
+  }
+}
+
+/**
+ * Get the first card with available balance (if one exists).
+ */
+
+export async function getCardWithFunds() {
+  try {
+    const response = await axios.request({
+      method: "GET",
+      url: `${process.env.BASE_URL}/v0/me/cards`,
+      headers: {
+        Authorization: `Bearer ${process.env.ACCESS_TOKEN}`,
+      },
+    });
+
+    // Get the the first card with nonzero available balance.
+    return response.data.filter(card => {
+      return Number(card.available) > 0
+    })[0];
+  } catch (error) {
+    formatError(error);
+  }
+}