This server has 2 tools with critical definition quality gaps. Both tools have names that do not follow verb_noun conventions and lack parameter descriptions. The 'addTwoNumbers' tool is a trivial utility with no real-world use case. The 'createPost' tool is a write operation that exposes a plain status parameter without any constraint documentation. Parameter descriptions are entirely null/missing for both tools, violating the baseline requirement that 100% of A+ tool params have descriptions. Descriptions exist but are minimal (8-54 chars, below the 34-char p10 baseline for acceptable tools). No error handling guidance is provided, agents calling createPost will have no recovery path if the API fails or the status is invalid. Output schemas are not documented. Neither tool supports composition, there's no way for the agent to validate input before calling createPost, and no feedback on what the post creation actually returned.

• Rename tools to verb_noun convention: 'addTwoNumbers' → 'add_numbers' (or remove if not needed). 'createPost' is acceptable but consider 'create_tweet' or 'post_to_twitter' for clarity.
• Add descriptive parameter annotations for all parameters. Example: For 'status', add description: 'The tweet text (1 - 280 characters). Twitter enforces a 280-character limit.' For 'a' and 'b', add: 'Numeric value (integer or decimal) to be summed.' This enables LLMs to validate input before calling.
• Document output schema for both tools. Example: 'addTwoNumbers returns {"result": number, "operation": "addition"}. createPost returns {"post_id": string, "url": string, "created_at": ISO8601-datetime}'. This enables agents to plan downstream tool calls.
• Add error handling guidance to createPost. Example: 'If the API returns 401, authentication failed, check credentials. If 429, rate limit hit, retry after 60 seconds. If 422, tweet exceeds 280 chars, shorten and retry.' Current code has no error recovery path.
• Implement input validation with clear error messages. For createPost: validate status length at 1 - 280 chars; return specific error 'Tweet exceeds 280 characters. Reduce by X chars.' instead of letting the X API fail.
• Add scope and permission documentation. Example: 'Requires write:tweets permission on X/Twitter account. Verify authenticated user owns the account before calling.' Include audit logging of all posts created.
• If addTwoNumbers serves no real purpose for the agent, remove it. Tools should align with the server's domain (social media posting). Generic utilities dilute focus.