mcp-schema-audit-mcp
Audits MCP tool definitions and marketplace listings for the specific patterns that make models call tools wrong, never call them, or mis-fill their parameters — vague descriptions, missing parameter docs, non-verb-first naming, oversized enums, deeply nested schemas — plus MCPize's own 500-character description limit, caught before you burn a deploy attempt finding out.
How to pay
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$7/month
Predictable monthly cost with included usage. Best for steady, high-volume traffic.
- Unlimited tools within plan limits
- One API key, billed once a month
- Cancel any time
Deploys three tools that catch the specific patterns that make LLMs call MCP tools wrong: audit_tool_definition flags vague or missing descriptions, non-verb-first naming, oversized enums, and deeply nested schemas in a single tool definition; audit_tool_batch runs the same checks across an entire server's tool set at once; check_marketplace_description catches MCPize's own 500-character listing description limit before a deploy attempt fails on it. Built after hitting that exact 634-character rejection firsthand while shipping another server the same day. Free tier included, no API key required.