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100
MCP live MCP 2025-06-18 http

Jsonaut

io.github.shoggi211/jsonaut

Repair malformed JSON from LLM/agent output; optional JSON Schema coercion. Free + x402 paid.

Uptime
100.0%
1 direct probes · 30d
Response
130ms
last probe
Tools
4
callable
Resources
0
readable
Prompts
0
available
Primary URL
https://jsonaut.jsonaut-shaurya.workers.dev/mcp

Tools · 4

repair_json

Repair malformed JSON (trailing commas, single quotes, truncation, markdown fences, comments, python literals) and optionally validate/coerce it against a JSON Schema. Deterministic repair is free. If…

validate_json

Validate a JSON string against a JSON Schema. Free. Returns validity and a list of violations.

extract_json

Extract JSON embedded in arbitrary text — LLM prose, chat messages, logs, emails — then repair and validate it. Deterministic extraction is free. If no JSON can be located and allow_llm_fallback is tr…

infer_schema

Infer a JSON Schema (draft 2020-12) from an example JSON value. Free and deterministic. Set as_samples=true when the input is an array of example objects of the same shape to merge them into one schem…

How to use

Add to your Claude Desktop / Cursor / Cline MCP config:

{
  "mcpServers": {
    "jsonaut": {
      "url": "https://jsonaut.jsonaut-shaurya.workers.dev/mcp",
      "transport": "http"
    }
  }
}