Lints whether a paid API's 402 response speaks the x402 protocol correctly.
| Endpoint | https://x402lint.sebastiaan-ba3.workers.dev/mcp (streamable-http) |
|---|---|
| Registry version | 1.0.0 |
| Now | 1 tools · grade A (100) · pin ts_57dbb12bd76efb9f99b1064cccf9f901 · protocol 2025-06-18 |
| First / last listed | 2026-10-25 07:32 UTC / 2026-10-25 07:32 UTC |
| Grade over time | 2026-10-25: A (100), 1 tools |
Is this your server? Own a server? ToolFit hosted watch re-checks it every 24 h ($0.25 per 30 days) or 6 h ($0.60) and sends you an HMAC-signed webhook when its tools or grade change: POST https://api.youraitools.co/toolfit/v1/watch. To opt out, see About & opt-out.
Tools: lint_x402_endpoint
lint_x402_endpoint | Fetch a URL, expect an HTTP 402 response, and validate the JSON body against the x402 protocol shape (x402Version, accepts[] fields, resource/description). Free, no account. Returns a pass/fail report with concrete errors and warnings. params: url* |
Entries describe changes in tool definitions. They are not statements about a server, its quality or its author. The grade measures how the tool definitions fit model providers (token cost, schema compatibility, confusable names) as scored by the ToolFit engine at the time of the listing. JSON: append .json. Opt-out: how or hello@youraitools.co.