Three tools with basic descriptions and partial schemas. All tools have names starting with action verbs (search_, browse_, pull_), which is good. However, descriptions lack depth on WHEN to use each tool and what distinguishes them. Parameter descriptions exist but are minimal (10-30 chars). Output schemas are not documented, responses are free-text strings, not structured objects. Error handling returns raw exception messages rather than actionable recovery guidance. No tool annotations (readOnlyHint, destructiveHint). The pull_from_repository tool modifies local state but lacks confirmation/dry-run pattern.

• Convert all tool responses from free-text strings to structured JSON objects. E.g., search_repositories should return {"repositories": [{"name": "...", "full_name": "...", "url": "...", "stars": 123}], "total": 42, "limit": 10}. This enables LLMs to extract and chain data reliably.
• Enhance error messages with actionable recovery guidance. Instead of 'Error accessing repository: 404', return 'Repository not found. Verify the owner/repo format (e.g., torvalds/linux). Call search_repositories() to find similar repos.'
• Add tool annotations: readOnlyHint=true for search_repositories and browse_repository; destructiveHint=true for pull_from_repository. This signals to agents which tools are safe to retry.
• Expand parameter descriptions to 50-100 chars with format/constraint hints. E.g., 'Search query (2-100 chars, supports GitHub search syntax like language:python stars:>1000)' instead of 'Search query to find repositories'.
• Implement a dry-run or confirmation pattern for pull_from_repository. Add an optional 'confirm' parameter or return a confirmation token that must be passed in a second call to actually clone the repo.