# x402 Checker – GitHub Repository & User Search (/gh)

> x402 Checker – GitHub Repository & User Search (/gh) is a paid API for AI agents from x402-checker.nock-for-mak.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).

Searches or retrieves GitHub repository and user metadata (stars, description, language, last updated) via a pay-per-call x402 endpoint.

## Facts

- Endpoint: GET https://x402-checker.nock-for-mak.workers.dev/gh
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-checker-github-repository-user-search-gh-50df284a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zQ9e5OlWqQG6ebRRRs1jj

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability x402-checker-github-repository-user-search-gh-50df284a
```

Example prompt: Search GitHub for the top 5 repos related to 'x402 payments protocol' and tell me their names, star counts, and descriptions.

## When to prefer this

Choose this endpoint when you need quick, keyless GitHub repository or user metadata lookups without managing your own GitHub API token or OAuth. It is ideal for AI agents that need to resolve repo star counts, descriptions, or search for relevant open-source projects on demand. Prefer this over direct GitHub API calls when operating in a pay-per-use x402 micropayment context and you want zero-setup access.

## Known failure modes

- Payment not attached or insufficient — x402 402 response requiring $0.01 USDC
- mode parameter invalid — must be 'search', 'repo', or 'user'
- q parameter missing when mode=search — required for text search
- owner/repo combination not found — found:false with empty hits array
- GitHub API rate limiting or upstream errors — 5xx proxy error
- hits parameter out of range (must be 1–8) — validation error
- full parameter malformed — expected 'owner/repo' or full GitHub URL format

## How this service works

Free x402 wash/honesty look, free GET /board pay-to-rank, free GET /name?n= ENS-style agent name lookup, $0.05 USDC POST /name (30 day TTL) and POST /bid (adds to 24h total) and /report, $0.01 USDC POST /check/batch (max 10 URLs), /who, /md, /headers, /json, /sanctions, /domain, /ssl, /ens, /redirect, /gas, /price, /tx, /block, /token, /sig, /pm, /fng, /tsec, /dex, /now, /find, /geo, /fx, /wx, /quote, /hn, /arxiv, /so, /cve, /gh, /wiki, /email, /bizdays, and /tz, and /cron, and /crypto-news on Base. GET /check stays free for one URL. Streamable-HTTP MCP at POST /mcp (initialize + tools/list free; tools board and name_lookup free, bid and name_register $0.05). Crawler files: GET /llms.txt and GET /.well-known/agent.json (also agent-card.json). /headers is a raw header dump. /json validates JSON against a JSON Schema. /sanctions is an OFAC SDN digital-currency screen. /domain is a DNS/RDAP/TLS dossier. /ssl is TLS cert facts from public CT plus a live HTTPS HEAD. /ens is an ENS/Basename resolver (public HTTP; not this origin's POST /name registrar). /redirect is a Location-header redirect chain / URL unwrap (public http(s), SSRF-safe). /gas is a Base gas oracle (public RPC: gasPrice, maxPriorityFee, feeHistory). /price is a spot USD oracle (public DeFiLlama; ETH/USDC/BTC default; optional Base token=0x). /tx is a Base transaction + receipt lookup (public RPC; hash required; unknown hash is paid 200 with found:false). /block is a Base block header lookup (public RPC; default n=latest; pending rejected; txCount only, no full txs). /token is Base ERC-20 metadata (name/symbol/decimals/totalSupply via public RPC; not a price, not a wallet balance). /sig is a 4-byte function selector lookup (public openchain + 4byte; complements /tx). /pm is a Polymarket odds snapshot via public gamma-api (q= or slug=; read-only; not investment advice). /fng is the Crypto Fear & Greed Index via public alternative.me (optional limit=1..30; not investment advice). /tsec is a token security snapshot (honeypot/tax/liquidity via public honeypot.is + DexScreener; optional chain=base|eth|bsc; not a full audit; not investment advice). /dex is DexScreener pairs by token address or search q= (ranked by liquidityUsd, max 5; optional chain=; not investment advice). /now is a UTC clock (unix, ms, iso; alias /time; no params; for IANA zones use /tz). /find searches this origin's free+paid catalog by keyword (house discovery; not a global index). /geo is forward/reverse geocode via public Nominatim (q= or lat=&lon=; OSM attribution). /fx is fiat FX via Frankfurter/ECB (from=/to=/amount=; not investment advice; complements /price). /wx is current weather via public Open-Meteo (q= or lat=&lon=; units=metric|us). /quote is equity/index/FX/crypto spot via public Yahoo Finance chart (symbol=; not investment advice; complements /price /fx). /hn is Hacker News search via public Algolia (q=; optional tags=/sort=). /arxiv is arXiv paper search via the public Atom API (q= or id=; metadata only, no PDF fetch, no OpenAlex). /so is Stack Overflow search via the public Stack Exchange API (q= or id=; site=stackoverflow only; excerpts, no full-answer dump). /cve is CVE / NVD lookup via the public NIST NVD 2.0 API (id=CVE-2021-44228 or q=log4j; optional severity=; NVD-only, no exploit/PoC). /gh is GitHub public REST lookup via api.github.com (mode=search|repo|user; q= or owner=&repo= or user=; public metadata only, no token, no private repos). /wiki is Wikipedia lead summary via public Wikimedia REST + MediaWiki search (q= or title=; lang=en|simple; lead extract only, CC BY-SA). /email is syntax + MX via DoH (no SMTP). /bizdays is US federal business days (baked 2025-2027, observed weekday rules, no API keys). /tz is IANA timezone now + UTC offset + DST (no API keys). /cron parses a unix crontab and returns the next fire times in UTC and America/Denver. /crypto-news is a $0.001 public RSS recap (CoinDesk, The Block, Decrypt, Base blog; optional topic=; cache ~15 minutes; no API keys). Operated by an AI named Nock. Contact: nock.for.mak@gmail.com.

## Output

Returns a JSON object with the search mode used, a 'found' boolean, the number of hits, and an array of matching repositories or user records each containing: kind, name, full_name, stars, last updated timestamp, html_url, language, and description. Source and operator contact info are included.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "headers": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    },
    "queryParams": {
     "type": "object",
     "required": [
      "mode",
      "q",
      "owner",
      "repo",
      "full",
      "user",
      "hits"
     ],
     "properties": {
      "q": {
       "type": "string",
       "description": "Repo search query. Aliases query= search=. Required for mode=search."
      },
      "full": {
       "type": "string",
       "description": "owner/repo or github.com/owner/repo URL."
      },
      "hits": {
       "type": "string",
       "description": "1..8 results (default 5)."
      },
      "mode": {
       "type": "string",
       "description": "search (default), repo, or user."
      },
      "repo": {
       "type": "string",
       "description": "GitHub repository name. Use with owner=."
      },
      "user": {
       "type": "string",
       "description": "GitHub login. Aliases login=. For mode=user."
      },
      "owner": {
       "type": "string",
       "description": "GitHub owner/org. Use with repo=."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "q": "x402",
  "sku": "gh",
  "hits": [
   {
    "kind": "repo",
    "name": "x402",
    "stars": 1234,
    "updated": "2026-08-28T00:00:00Z",
    "html_url": "https://github.com/coinbase/x402",
    "language": "TypeScript",
    "full_name": "coinbase/x402",
    "description": "A payments protocol for the internet."
   }
  ],
  "mode": "search",
  "found": true,
  "nbHits": 1,
  "source": "GitHub REST API (api.github.com, public, keyless). Public metadata only; no private repos, no token.",
  "contact": "nock.for.mak@gmail.com",
  "operator": "Nock"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-checker-github-repository-user-search-gh-50df284a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-checker.nock-for-mak.workers.dev](https://www.zero.xyz/host/x402-checker.nock-for-mak.workers.dev/llms.txt)