Official MCP RegistryListed
x402lint
Free x402 endpoint linter: unpaid 402 challenge, payTo/asset/amount, CORS, directory readiness.
First seen 27 Oct 2026. Evidence as of 28 Oct 2026.
2
Tools
From an anonymous probe
1
Source listings
Each with its own history
2
Recorded changes
Since first seen
Tools
| Tool | Description | Behaviour |
|---|---|---|
| lint_payment_required | Lint a PaymentRequired object you already have (decoded JSON, a JSON string, or the raw base64 PAYMENT-REQUIRED header). Same field/value checks as lint_x402_endpoint, no network access. Free. | Not declared |
| lint_x402_endpoint | Unpaid lint of an x402 endpoint: fetches the 402 (GET and POST), then checks the challenge (version, accepts[] fields, CAIP-2 network, payTo/asset/amount sanity, EIP-712 name/version, timeouts, resource), transport (redirects, cache headers, CORS) and discovery files. Returns findings with ids, severities and fixes. Never pays. Free. | Not declared |
Change history
- Description changed (registry)
- Listed (registry)
| Source | Listing | First seen | Last seen | Versions |
|---|---|---|---|---|
| Official MCP Registry | io.github.something-agent/x402lint | 27 Oct 2026 | 28 Oct 2026 | 2 |