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Repair malformed JSON from LLM tool calls and agent-to-agent handoffs — fixes trailing commas, single quotes, truncation, markdown code fences, comments, and python literals, and can validate/coerce the result against a JSON Schema. Free deterministic tier; pay-per-call LLM fallback via x402 (USDC on Base). Tools: repair_json, validate_json.

Transport
streamable-http
Auth
smithery_api_key
Cost

How to connect

MCP endpoint (streamable-http)
https://server.smithery.ai/progamerplayzyt97/jsonaut/mcp
JSON-RPC initialize probe
curl -X POST https://server.smithery.ai/progamerplayzyt97/jsonaut/mcp \
  -H 'Content-Type: application/json' \
  -H 'Accept: application/json, text/event-stream' \
  -d '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{}}'
Homepage
https://jsonaut.jsonaut-shaurya.workers.dev
Listed at (smithery)
https://jsonaut.jsonaut-shaurya.workers.dev