Json Validate

Validate a JSON string. Returns type + shape summary, or a parse error with position.

This page documents the MCP tool findutils:json_validate. See the REST reference →

Call it over MCP

Tool name findutils:json_validate · no API keys · 120 requests/min per IP

Claude Code

claude mcp add findutils --transport http https://mcp.findutils.com/

Claude Desktop — claude_desktop_config.json

{
  "mcpServers": {
    "findutils": {
      "url": "https://mcp.findutils.com/"
    }
  }
}

Raw JSON-RPC (any MCP client) — verified example

curl -X POST https://mcp.findutils.com/ \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "tools/call",
    "params": {
      "name": "json_validate",
      "arguments": {
        "json": "{\"ok\":true}"
      }
    }
  }'

Input schema

Argument	Type	Required	Description
json	string	yes	JSON string to validate.

Example arguments (verified)

{
  "json": {
    "ok": true
  }
}

Arguments that carry JSON as a string are shown decoded for readability. The Copy button copies the exact wire arguments.

Also a REST endpoint

The same tool answers plain HTTP at POST /api/tools/json-validate/execute — no key, 60 requests/min.

Open the REST reference for Json Validate →

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