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Is x402 endpoint checker reliable?

Reliable (measured) Yes. Faceabot measured x402 endpoint checker 38 times: 100% of checks succeeded, including the last 38 in a row (last check 2026-10-19 15:05 UTC). It also does the job: its real read-only task worked 38 of 38 times.

Last check: 2026-10-19 15:05 UTC · answered in 7661 ms · remote (no install)

En français : Fiable (mesuré). Faceabot teste cet outil lui-même, en continu, sans dépendre de ce que son auteur affirme.

What it does

Test any x402 paid URL without paying: 402, PAYMENT-REQUIRED, USDC, amounts, payTo, EIP-712, CORS.

Source: official MCP registry (registry.modelcontextprotocol.io) · version 1.0.0 · publisher website
Connect your agent
{
  "mcpServers": {
    "x402-checker": {
      "url": "https://x402-seller-kit.soloearn.workers.dev/mcp"
    }
  }
}
Or ask Faceabot first: MCP tool check_reliability {"id":"dev.workers.soloearn.x402-seller-kit/x402-checker"} on https://faceabot.com/api/mcp.
Does it actually do the job?

Does the job (tested) — Faceabot asked check_x402_endpoint to do a small read-only task 38 time(s): 38 returned a real result, the last 38 in a row. Last result: ok in 2866 ms.

Sample input: {"url":"https://example.com"}. A success means a non-empty result without error; it does not certify the accuracy or safety of the content.
Other proven tools for the same job

Automaton Onchain & URL Tools Reliable (measured) · 100%
Paid x402 tools: tx, approvals, address, contract risk (Base/ETH/BSC) + URL safety. · https://automaton-tx-explainer.vercel.app/mcp

Picked from Faceabot's live measurements. Or let Faceabot choose: GET https://faceabot.com/resolve?need=…
Faceabot measurements
WhenAnswersReal taskLatency
2026-10-19 15:05 UTC✅ ok✅ done7661 ms
2026-10-18 23:55 UTC✅ ok✅ done6554 ms
2026-10-18 09:00 UTC✅ ok✅ done7402 ms
2026-10-18 01:15 UTC✅ ok✅ done4127 ms
2026-10-17 17:05 UTC✅ ok✅ done5260 ms
2026-10-17 09:00 UTC✅ ok✅ done6782 ms
2026-10-17 01:05 UTC✅ ok✅ done4264 ms
2026-10-16 17:55 UTC✅ ok✅ done4562 ms
2026-10-16 10:50 UTC✅ ok✅ done7859 ms
2026-10-16 04:01 UTC✅ ok✅ done4918 ms
2026-10-15 21:05 UTC✅ ok✅ done5525 ms
2026-10-15 14:16 UTC✅ ok✅ done4729 ms
2026-10-15 07:35 UTC✅ ok✅ done3634 ms
2026-10-15 01:05 UTC✅ ok✅ done3302 ms
2026-10-14 18:40 UTC✅ ok✅ done5690 ms
2026-10-14 12:10 UTC✅ ok✅ done5212 ms
2026-10-14 05:46 UTC✅ ok✅ done7914 ms
2026-10-13 23:01 UTC✅ ok✅ done6323 ms
2026-10-13 16:55 UTC✅ ok✅ done5595 ms
2026-10-13 10:46 UTC✅ ok✅ done8332 ms
Method: MCP initialize then tools/list from Faceabot (FaceabotProbe/1.0), plus one read-only tool call with a neutral input when the server declares one, repeated over time. This checks that the server is up and speaks MCP correctly; it does not certify the quality or safety of each tool. How measurement works.

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Publisher of x402 endpoint checker?

Show your measured reliability on your README or website:

Faceabot reliability badge for x402 endpoint checker

[![Measured by Faceabot](https://faceabot.com/badge/dev.workers.soloearn.x402-seller-kit/x402-checker.svg)](https://faceabot.com/tools/dev.workers.soloearn.x402-seller-kit/x402-checker)
Data in JSON: /api/catalog?id=dev.workers.soloearn.x402-seller-kit/x402-checker · Stop probes: POST /api/reliability/opt-out

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