Single tool 'get-public-apis' has a clear action verb and basic schema with enum constraints on categories. However, the tool lacks critical depth: the description is minimal (58 chars), parameter descriptions are present but generic, and the output schema is completely undocumented. The tool returns formatted text rather than structured data, making it harder for LLMs to extract and chain results. Error handling is minimal (generic catch-all). The categories enum is empty in the schema definition despite being populated at runtime, which violates schema completeness. No pagination support despite potentially returning large result sets.

• Document the output schema explicitly. Return an array of objects with fields: {title, description, link, auth, https, cors, category}. This enables LLMs to extract individual APIs and chain them to downstream tools.
• Fix the categories enum: populate it from public-apis-categories.json at server initialization so the schema reflects valid options. This enables LLM discovery and validation.
• Expand tool description to 100-150 characters explaining: what it does, when to use it (e.g., 'to discover free APIs for a project'), and what structure it returns. Example: 'Fetch a curated list of public APIs filtered by category and authentication requirements. Returns structured API metadata including title, description, auth type, and HTTPS/CORS support.'
• Add pagination: introduce limit (default 20, max 100) and offset parameters. Return {apis: [...], total: N, hasMore: boolean} so agents can iterate through large result sets without context explosion.
• Improve error handling: categorize errors (e.g., 'Network error fetching README, this is retryable' vs 'Invalid category filter, check available categories with get-public-apis(categories=[])') and suggest recovery steps.