Graphql Playground

Seo REST API MCP

Check a GraphQL query for balanced braces and, when a schema is supplied, unknown fields on Query/Mutation/Subscription types. This is a syntax and field-name check. It does not execute a query and it is not a full GraphQL engine.

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

Use in the browser View as Markdown

Call it over MCP

Tool name findutils:graphql_playground · 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": "graphql_playground",
      "arguments": {
        "schema": "type Query { user: User }\ntype User { name: String }",
        "query": "{ user { name } }"
      }
    }
  }'

Input schema

Argument	Type	Required	Description
schema	string	no	Optional GraphQL SDL used to check field names.
query	string	yes	GraphQL query, mutation, or subscription document.

Example arguments (verified)

{
  "schema": "type Query { user: User }\ntype User { name: String }",
  "query": "{ user { name } }"
}

Also a REST endpoint

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

Open the REST reference for Graphql Playground →

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