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Username Availability Checker Across Developer Platforms
x402
Username Availability Checker Across Developer Platforms is a paid API for AI agents from api.x402node.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Checks if a given username is available or taken across 10 major developer and social platforms including GitHub, GitLab, npm, PyPI, Reddit, HackerNews, dev.to, Medium, StackOverflow, and ProductHunt.
Price / call$0.01
Success—
StatusUnknown
How this service works
Check if a username is taken across 10 developer platforms (GitHub, GitLab, Reddit, HackerNews, dev.to, Medium, npm, PyPI, StackOverflow, ProductHunt). Returns per-platform {taken, status, url}. Use ?username=alice or ?username=alice and platforms=github,reddit. Built for AI agents helping pick handles, brand audits. Accepts payment on Base or Solana — either network works.
Output
Returns a JSON object with per-platform results, each containing a 'taken' boolean, a 'status' field (e.g. available/taken/error), and a direct URL to the profile or page on that platform. Covers up to 10 platforms: GitHub, GitLab, Reddit, HackerNews, dev.to, Medium, npm, PyPI, StackOverflow, and ProductHunt.
Example use cases
Example prompt
“Can you check if the username 'pixelforge' is taken on GitHub, npm, Reddit, and ProductHunt so I can decide if it's safe to use as my new project's handle?”
Technical details
Endpoint
GEThttps://api.x402node.dev/identity/username-checkWhen to prefer
Use this endpoint when you need to quickly audit a username or brand handle across multiple developer-centric platforms in a single call. Ideal for pre-launch brand checks, open source project naming, developer identity verification, or helping users pick a consistent handle. Prefer this over manual lookups or general social-media checkers when the focus is on developer and tech communities (GitHub, npm, PyPI, StackOverflow, etc.).
Side effects
- Platform rate-limiting or downtime causes per-platform errors rather than overall failure
- Invalid or empty username returns an error response
- Unknown platform name in 'platforms' filter is silently ignored or returns an error
- Network timeouts on slow platforms may result in partial results
- Username with special characters may be rejected by some platforms
Input
{
"username": "testdevuser123"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
{
"_hint": "x402 paid endpoints for AI agents — x402node.dev (utilities) · cn402.com (Chinese culture)",
"results": [
{
"url": "https://github.com/testdevuser123",
"error": null,
"taken": false,
"status": 404,
"platform": "github"
},
{
"url": "https://gitlab.com/testdevuser123",
"error": null,
"taken": false,
"status": 403,
"platform": "gitlab"
},
{
"url": "https://www.reddit.com/user/testdevuser123",
"error": null,
"taken": false,
"status": 403,
"platform": "reddit"
},
{
"url": "https://news.ycombinator.com/user?id=testdevuser123",
"error": null,
"taken": false,
"status": 405,
"platform": "hackernews"
},
{
"url": "https://dev.to/testdevuser123",
"error": null,
"taken": false,
"status": 404,
"platform": "devto"
},
{
"url": "https://medium.com/@testdevuser123",
"error": null,
"taken": false,
"status": 403,
"platform": "medium"
},
{
"url": "https://www.npmjs.com/~testdevuser123",
"error": null,
"taken": false,
"status": 403,
"platform": "npm"
},
{
"url": "https://pypi.org/user/testdevuser123/",
"error": null,
"taken": true,
"status": 200,
"platform": "pypi"
},
{
"url": "https://stackoverflow.com/users/testdevuser123",
"error": null,
"taken": false,
"status": 404,
"platform": "stackoverflow"
},
{
"url": "https://www.producthunt.com/@testdevuser123",
"error": null,
"taken": false,
"status": 403,
"platform": "producthunt"
}
],
"taken_on": [
"pypi"
],
"username": "testdevuser123",
"available_on": [
"github",
"gitlab",
"reddit",
"hackernews",
"devto",
"medium",
"npm",
"stackoverflow",
"producthunt"
],
"checks_count": 10
}Tags
x402
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