MCPForge provides 11 tools across calculator, GitHub, and weather domains. All tools have descriptions (10-200 chars, within baseline range) and input schemas with typed parameters. However, schemas lack depth: no enums for constrained values (e.g., 'sort' and 'state' params accept free-form strings), no output schemas documented, and error handling is absent. Parameter descriptions are present but minimal (avg ~40 chars vs baseline 72 chars). No tool annotations (readOnlyHint, destructiveHint). Tools are well-named with action verbs (add, subtract, list, get, search) and single responsibilities. Composition is sound, tools chain naturally (e.g., search_repos → get_repo). Missing: pagination guidance in list_repos/list_issues, output field documentation, and recovery hints in error cases.

• Add output schemas to all tools. Document the structure of responses (e.g., list_repos returns [{name, url, stars, language, ...}], get_weather returns {temp, condition, humidity, ...}). This enables LLMs to plan downstream tool calls and extract the right fields.
• Convert free-form string parameters to enums. Replace 'sort' with enum ['created', 'updated', 'pushed', 'full_name'], 'state' with enum ['open', 'closed', 'all'], and 'units' with enum ['metric', 'imperial']. This prevents hallucinated invalid values.
• Add error handling and recovery hints. Document what happens on divide-by-zero (return error with guidance to use calculate() instead), invalid GitHub user (return 'User not found. Try search_repos() with a keyword.'), and API failures (return 'GitHub API rate limit exceeded. Retry in 60 seconds.').
• Add tool annotations. Mark all tools with readOnlyHint=true (they are all read-only, no state changes). This enables clients to apply caching and safety policies.
• Document pagination behavior. For list_repos, list_issues, and search_repos, specify that results are capped at per_page (max 100), include total_count in response, and explain how to fetch the next page using offset or cursor.