Validate MCP Tool Schemas

You are validating JSON schemas for MCP server tools.

Instructions

1. Use the mcp-debug MCP server's schema_validate tool with:

   • server: {{server}}
   • tool: {{tool}} (if provided)
   • input: {{input}} (if provided - must be valid JSON string)

2. Report validation results:

   • For schema validation: whether the tool's input schema is valid JSON Schema
   • For input validation: whether the provided input conforms to the tool's schema
   • Any validation errors with specific location and issue details

3. If validating all tools (no specific tool provided), summarize:

   • Total tools checked
   • Valid vs invalid schemas
   • List any tools with schema issues

Usage Examples

/validate-schema myserver                                    # Validate all tool schemas
/validate-schema myserver process_data                       # Validate specific tool
/validate-schema myserver process_data '{"data": [1, 2]}'   # Validate input against schema

Why Schema Validation Matters

• Invalid schemas can cause tool calls to fail unexpectedly
• Input validation ensures your data matches what the server expects
• Catch schema issues before deployment