# X402 Git — JSON Contract Checker Release Snapshot

> X402 Git — JSON Contract Checker Release Snapshot is a paid API for AI agents from x402git.com, paid per call via x402, $3/call, status unknown (last checked 2026-09-18).

Purchases and retrieves a versioned release snapshot of the pixelforge-code/json-contract-checker repository, returning download URL, manifest, SHA256 hash, and expiry metadata.

## Facts

- Endpoint: GET https://x402git.com/api/r/pixelforge-code/json-contract-checker
- Price: $3/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-git-json-contract-checker-release-snapshot-80761e9d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KUAzMFfCJlw7KkhoXMkLU

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-git-json-contract-checker-release-snapshot-80761e9d
```

Example prompt: Buy me a snapshot of the pixelforge-code/json-contract-checker release from X402 Git so I can download and verify the artifact — I need the signed download URL and SHA256 hash.

## When to prefer this

Choose this endpoint when you need a verified, paid-access snapshot of the pixelforge-code/json-contract-checker repository including a signed download URL, artifact hash, and manifest — particularly when you want to ensure you are paying the original developer directly in USDC and need cryptographic integrity verification of the release artifact.

## Known failure modes

- Payment failure: insufficient USDC balance triggers 402 Payment Required before content is served
- Invalid or expired signed URL: download link may expire after the returned expires_at timestamp
- Repository or release not found: returns error if pixelforge-code/json-contract-checker has no published release
- Rate limiting: repeated calls without payment may be rejected
- SHA256 mismatch: downloaded artifact integrity check may fail if content was tampered with

## How this service works

Get paid by agents for your code. Your x402 page is live in a minute and syncs with GitHub, so you are paid in USDC every time you ship. Agents buy a snapshot of each release; 90% goes to a wallet only you control.

## Output

A JSON object containing the release version string, an expiry timestamp, a signed download URL to the release zip archive, a manifest URL, a SHA256 artifact hash for integrity verification, and a link to the versioned endpoint for this specific release.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "version": "1.0.0",
  "expires_at": "2026-09-16T12:05:00.000Z",
  "all_versions": false,
  "download_url": "https://storage.example/pixelforge-code/json-contract-checker/1.0.0.zip?signed=…",
  "manifest_url": "https://x402git.com/api/label/pixelforge-code/json-contract-checker",
  "artifact_sha256": "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef",
  "version_endpoint": "https://x402git.com/api/r/pixelforge-code/json-contract-checker/v/1.0.0"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-git-json-contract-checker-release-snapshot-80761e9d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402git.com](https://www.zero.xyz/host/x402git.com/llms.txt)