18 tools with complete schemas and descriptions, but quality is uneven. Most tools have adequate naming (verb_noun pattern) and basic descriptions (avg ~80 chars), but lack depth on WHEN to use them and error recovery guidance. Parameter descriptions are present but often generic ('Tweet ID to X'). No output schemas documented. Error handling is minimal, tools return raw API responses without actionable recovery hints. Security: credentials injected server-side (good), but no permission gates or audit trail declarations. Composition is sound, tools are single-responsibility and chainable via ID fields.

• Document output schemas for all tools. Example for search_tweets: 'Returns {tweets: [{id, text, author_id, created_at, public_metrics}], next_cursor}'. This enables chaining and field extraction.
• Expand descriptions to 100-200 chars with WHEN/WHY context. E.g., 'Get a tweet by ID to retrieve full text, metrics, and author info. Use this after search_tweets returns a tweet_id you want to inspect in detail.'
• Add error recovery hints. E.g., get_user: 'If user not found, try search_users() with a partial name or @handle.'
• Implement confirmation pattern for delete_tweet: add optional 'confirm' boolean param; return {status: 'pending_confirmation', tweet_preview} if false, then require explicit confirm=true to execute.
• Add tool annotations in MCP registration: mark post_tweet, like_tweet, retweet, delete_tweet with destructiveHint=true; mark all read tools with readOnlyHint=true; mark like_tweet/unlike_tweet with idempotentHint=true.