8 tools with mixed quality. Most have verb-based names (post_, delete_, get_, search_, upload_, like_, retweet, get_) and non-trivial descriptions (72 - 180 chars, within baseline 34 - 392 range). Input schemas are visible and mostly complete with type annotations and parameter descriptions. However, output schemas are not documented in source, no structured response definitions provided. Error handling uses a generic error wrapper (createErrorResponse) without domain-specific recovery guidance. Several tools accept overloaded parameters (e.g., search_tweets accepts query without enum constraints for operators). Risk annotations (WRITE, DESTRUCTIVE, READ_ONLY) are declared informally in comments, not via tool annotations in the MCP payload.

• Document output schema for each tool. Example: 'post_tweet returns {tweet_id: string, created_at: ISO8601, text: string, author_id: string, public_metrics: {like_count, retweet_count, reply_count}}'. This enables downstream tool chaining and LLM planning.
• Enhance error handling with categorization and recovery guidance. Instead of generic error text, return {error: 'tweet_not_found', message: 'Tweet ID not found. Try search_tweets(query="from:@username") to find recent tweets by that user.', isRetryable: false}.
• Add MCP tool annotations: use destructiveHint=true for delete_tweet, readOnlyHint=true for get_tweet/search_tweets/get_mentions, and idempotentHint=true for like_tweet and retweet (idempotent operations).
• Constrain search_tweets query parameter. Either provide an enum of common operators or document exact regex pattern (e.g., /^[\w#@-:]+( [\w#@-:]+)*$/) and validate in the tool handler.
• Add dry-run mode to delete_tweet: parameter confirm_delete (boolean, default false). When false, return what would be deleted without actually deleting. When true, execute deletion.
• Cap search_tweets and get_mentions results to a stated limit (e.g., 20 by default, max 100) and document in description. Return pagination info (next_token, has_more, total_count) alongside results.
• Add parameter for search_tweets: include_fields (array of strings, default ['id','text','author_id','created_at','public_metrics']) to let agents request only needed fields and reduce token overhead.