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JsonMend

dev.workers.mike-tusa.jsonmend/jsonmend · v0.1.3

Repair broken JSON from LLM output and validate it against a JSON Schema.

Connect Remote server

Terminal
claude mcp add --transport http jsonmend https://jsonmend.mike-tusa.workers.dev/mcp --header "Authorization: Bearer <YOUR_API_KEY>"
~/.cursor/mcp.json
{
  "mcpServers": {
    "jsonmend": {
      "url": "https://jsonmend.mike-tusa.workers.dev/mcp",
      "headers": {
        "Authorization": "Bearer <YOUR_API_KEY>"
      }
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "jsonmend": {
      "type": "http",
      "url": "https://jsonmend.mike-tusa.workers.dev/mcp",
      "headers": {
        "Authorization": "Bearer <YOUR_API_KEY>"
      }
    }
  }
}
Claude Desktop
Settings > Connectors > Add custom connector
URL: https://jsonmend.mike-tusa.workers.dev/mcp

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools 2 found in our last check

  • repair_json

    Turn broken or messy JSON text into valid JSON. Strips Markdown code fences and prose before/after the JSON, removes comments and trailing commas, converts single/curly quotes, quotes unquoted keys, maps Python None/True/False, inserts missing commas, closes truncated strings/ar…

  • validate_json

    Check JSON against a JSON Schema and get every error with its JSON Pointer path. Send the JSON either as text ("input"; broken text is repaired first, and the fixes are listed) or as an already-parsed value ("data"). Optional coerce converts "42" → 42, "true" → true, etc. toward…

Headers

NameDescription
Authorization
Optional, secret
Optional. 'Bearer <key>' (free jm_ key) for higher limits. Works without a key.

Details

Endpointhttps://jsonmend.mike-tusa.workers.dev/mcp (Streamable HTTP)
First published15 Oct 2026
Last updated15 Oct 2026
Registry namedev.workers.mike-tusa.jsonmend/jsonmend

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