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Is json-repair-mcp reliable?

Reliable (measured) Yes. Faceabot measured json-repair-mcp 20 times: 100% of checks succeeded, including the last 20 in a row (last check 2026-10-19 12:05 UTC). It also does the job: its real read-only task worked 11 of 11 times.

Last check: 2026-10-19 12:05 UTC · answered in 9140 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

Repairs truncated or malformed LLM JSON outputs (trailing commas, markdown fences, unquoted keys).

Source: official MCP registry (registry.modelcontextprotocol.io) · version 1.1.1
Connect your agent
{
  "mcpServers": {
    "json-repair-mcp": {
      "url": "https://json-repair-72343955726.us-central1.run.app/mcp/json-repair"
    }
  }
}
Or ask Faceabot first: MCP tool check_reliability {"id":"io.github.robertoyanguas-ops/json-repair-mcp"} on https://faceabot.com/api/mcp.
Does it actually do the job?

Does the job (tested) — Faceabot asked get_agent_wallet_status to do a small read-only task 11 time(s): 11 returned a real result, the last 11 in a row. Last result: ok in 3375 ms.

Sample input: {}. 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

jsonaut Reliable (measured) · 100%
Repair malformed JSON from LLM/agent output; optional JSON Schema coercion. Free + x402 paid. · https://jsonaut.jsonaut-shaurya.workers.dev/mcp

Picked from Faceabot's live measurements. Or let Faceabot choose: GET https://faceabot.com/resolve?need=…
Faceabot measurements
WhenAnswersReal taskLatency
2026-10-19 12:05 UTC✅ ok✅ done9140 ms
2026-10-18 19:50 UTC✅ ok✅ done6580 ms
2026-10-18 06:55 UTC✅ ok✅ done6277 ms
2026-10-17 23:05 UTC✅ ok✅ done5983 ms
2026-10-17 14:55 UTC✅ ok✅ done6942 ms
2026-10-17 06:50 UTC✅ ok✅ done7599 ms
2026-10-16 23:05 UTC✅ ok✅ done5447 ms
2026-10-16 15:55 UTC✅ ok✅ done6672 ms
2026-10-16 08:55 UTC✅ ok✅ done7289 ms
2026-10-16 02:01 UTC✅ ok✅ done8226 ms
2026-10-15 19:05 UTC✅ ok✅ done6410 ms
2026-10-15 12:20 UTC✅ ok—3734 ms
2026-10-15 05:45 UTC✅ ok—3968 ms
2026-10-14 23:15 UTC✅ ok—2658 ms
2026-10-14 16:55 UTC✅ ok—4785 ms
2026-10-14 10:25 UTC✅ ok—4627 ms
2026-10-14 03:56 UTC✅ ok—6061 ms
2026-10-13 21:20 UTC✅ ok—6093 ms
2026-10-13 15:15 UTC✅ ok—8202 ms
2026-10-13 09:10 UTC✅ ok—8456 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 json-repair-mcp?

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Data in JSON: /api/catalog?id=io.github.robertoyanguas-ops/json-repair-mcp · Stop probes: POST /api/reliability/opt-out

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