MCP Tool Schema Validator
Validate MCP tool definitions and verify `inputSchema` before deployment
MCP Tool Definition
Formatted Definition
أدوات ذات صلة
Structured Output Schema Builder
Generate OpenAI, Anthropic, MCP, or plain JSON Schema wrappers from sample output
Anthropic Tool Input Builder
Build Claude tool definitions with `input_schema` from sample JSON input
مدقق JSON Schema
التحقق من JSON وفق مخطط
مستكشف API
اختبار REST API في المتصفح مع تنسيق JSON
الأسئلة الشائعة
It checks that your tool definition is valid JSON, confirms the required top-level fields are present, validates the embedded `inputSchema`, and reports both errors and warnings about the MCP shape.
No. It validates the JSON definition locally in your browser. It does not connect to a running MCP server or any third-party API.
Typical issues include missing `name`, a non-object `inputSchema`, invalid JSON Schema inside `inputSchema`, non-boolean annotation hints, and definitions that omit a useful description.
Yes. Paste the entire MCP tool definition, not only the `inputSchema`. The validator is designed to inspect the full object.