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Jsonaut

io.github.shoggi211/jsonaut · v0.1.0

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

Connect Remote server

Terminal
claude mcp add --transport http jsonaut https://jsonaut.jsonaut-shaurya.workers.dev/mcp
~/.cursor/mcp.json
{
  "mcpServers": {
    "jsonaut": {
      "url": "https://jsonaut.jsonaut-shaurya.workers.dev/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "jsonaut": {
      "type": "http",
      "url": "https://jsonaut.jsonaut-shaurya.workers.dev/mcp"
    }
  }
}
Claude Desktop
Settings > Connectors > Add custom connector
URL: https://jsonaut.jsonaut-shaurya.workers.dev/mcp

Tools 4 found in our last check

  • 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 it fails and allow_llm_fallback is true, a paid LLM repair is attempted (requi…

  • 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 true, a paid LLM extracts structured data from the text (requires x402 payment; c…

  • 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 schema. Turns sample agent/tool output into a reusable schema.

Details

Endpointhttps://jsonaut.jsonaut-shaurya.workers.dev/mcp (Streamable HTTP)
First published2 Jul 2026
Last updated2 Jul 2026
Registry nameio.github.shoggi211/jsonaut

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