- Added command line utility for generating private keys

- Updated documentation

Author: BrianBelhumeur

Diff for: .prettierrc

@@ -0,0 +1,4 @@
+{
+	"plugins": ["prettier-plugin-organize-imports"],
+	"useTabs": true
+}

Diff for: README.md

@@ -8,34 +8,42 @@ npm install --save @chronicleprotocol/api-auth
 
 ## Usage
 
-Generating authentication tokens:
+Generating authentication tokens programmatically:
 
 ```js
 import { signAuthToken } from "@chronicleprotocol/api-auth";
 
 const { token, message } = signAuthToken({
-  // private key is 0x prefixed 32 byte hex string
-  privateKey: "0xabc...",
+	// private key is 0x prefixed 32 byte hex string
+	privateKey: "0xabc...",
 });
 
 // `token` is hex string to be included as Authorization header (see below)
 // `message` is object containing decoded data within `token`. Optional,
 // but can be useful for programmatic token handling
+```
+
+To generate a token via the command line, use:
 
+```bash
+# Please do not put your private key directly in the command and have it show up in your shell history :-(
+npx @chronicleprotocol/api-auth --privateKey=$PRIVATE_KEY
 ```
 
-> Your public signing address must be allow-listed on our servers before your tokens will be valid.
+> NOTE: Your public signing address must be allow-listed on our servers before your tokens will be valid.
 
-Using an auth token to fetch an API endpoint:
+Using an auth token to fetch an API endpoint programmatically:
 
 ```js
-// token is received from the server
-fetch(
-  "https://chroniclelabs.org/api/pairs",
-  {
-    headers: {
-      Authorization: `Bearer ${token}`,
-    },
-  },
-);
+fetch("https://chroniclelabs.org/api/authTest", {
+	headers: {
+		Authorization: `Bearer ${token}`,
+	},
+});
+```
+
+or via command line:
+
+```bash
+curl --header "Authorization: Bearer $AUTH_TOKEN" https://chroniclelabs.org/api/authTest
 ```

Diff for: bin/signAuthToken.ts

@@ -0,0 +1,26 @@
+#!/usr/bin/env npx tsx
+
+import { Hex } from "viem";
+import { signAuthToken } from "../src/index";
+
+let privateKey = (process.argv[2] || "").replace("--privateKey=", "");
+
+if (!privateKey) {
+	console.error("Usage: signAuthToken --privateKey=<privateKey>");
+	process.exit(1);
+}
+
+if (!privateKey.startsWith("0x")) {
+	privateKey = "0x" + privateKey;
+}
+
+if (privateKey.length !== 66) {
+	console.error(
+		"Invalid private key. Must be a 32 byte (64 character) hex string, with or without leading 0x",
+	);
+	process.exit(1);
+}
+
+signAuthToken({ privateKey: privateKey as Hex }).then((result) => {
+	console.log(result.token);
+});