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Is FixMyJSON reliable?

Reliable (measured) Yes. Faceabot measured FixMyJSON 13 times: 100% of checks succeeded, including the last 13 in a row (last check 2026-10-19 12:55 UTC).

Last check: 2026-10-19 12:55 UTC · answered in 6401 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

Repair broken LLM JSON and check it against a JSON Schema. Flags cut-off output. Free trial.

Source: official MCP registry (registry.modelcontextprotocol.io) · version 0.4.0 · publisher website
Connect your agent
{
  "mcpServers": {
    "fixmyjson": {
      "url": "https://fixmyjson-api.onrender.com/mcp"
    }
  }
}
Or ask Faceabot first: MCP tool check_reliability {"id":"io.github.tonbifun/fixmyjson"} on https://faceabot.com/api/mcp.
Does it actually do the job?

Not tested with a real task yet. Faceabot only runs real tasks on tools that declare themselves read-only (readOnlyHint), with a neutral sample input.

Other proven tools for the same job

JsonMend Reliable (measured) · 100%
Repair broken JSON from LLM output and validate it against a JSON Schema. · https://jsonmend.mike-tusa.workers.dev/mcp

json-repair-mcp Reliable (measured) · 100%
Repairs truncated or malformed LLM JSON outputs (trailing commas, markdown fences, unquoted keys). · https://json-repair-72343955726.us-central1.run.app/mcp/json-repair

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 12:55 UTC✅ ok—6401 ms
2026-10-18 20:55 UTC✅ ok—5990 ms
2026-10-18 07:30 UTC✅ ok—8506 ms
2026-10-17 23:45 UTC✅ ok—4182 ms
2026-10-17 15:35 UTC✅ ok—7027 ms
2026-10-17 07:35 UTC✅ ok—7867 ms
2026-10-16 23:45 UTC✅ ok—6214 ms
2026-10-16 16:40 UTC✅ ok—5767 ms
2026-10-16 09:40 UTC✅ ok—6191 ms
2026-10-16 02:45 UTC✅ ok—6859 ms
2026-10-15 19:50 UTC✅ ok—6541 ms
2026-10-15 13:06 UTC✅ ok—5357 ms
2026-10-15 06:30 UTC✅ ok—4772 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.

Find tools similar to FixMyJSON →

Publisher of FixMyJSON?

Show your measured reliability on your README or website:

Faceabot reliability badge for FixMyJSON

[![Measured by Faceabot](https://faceabot.com/badge/io.github.tonbifun/fixmyjson.svg)](https://faceabot.com/tools/io.github.tonbifun/fixmyjson)
Data in JSON: /api/catalog?id=io.github.tonbifun/fixmyjson · Stop probes: POST /api/reliability/opt-out

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