ossmate exposes 10 tools with basic descriptions and partial schemas. All tools are READ_ONLY and well-intentioned for OSS maintenance workflows. However, critical gaps exist: most tools lack visible input schemas in the provided source (only 4 of 10 show explicit schema definitions), parameter descriptions are minimal or absent, and output schemas are undocumented. Tool naming is verb-forward and clear (get_*, list_*), but descriptions average ~60 chars, below the 194-char baseline for A+ tools. No error handling guidance, no pagination metadata, and no tool annotations (readOnlyHint, etc.). The server is functional but falls short of production-grade quality.

• Document output schemas for all 10 tools. For each tool, specify the response structure: field names, types, and descriptions. E.g., get_repo_info returns {name: string, url: string, stars: integer, license: string, description: string}. This enables LLMs to chain tools and extract the right data.
• Expand tool descriptions to 100 - 200 chars. Include WHEN to call the tool and WHAT it returns. E.g., 'Fetch GitHub PR details including diff, commits, and review comments. Use this to analyze proposed changes before merging.' Current descriptions are too terse.
• Add parameter descriptions for all inputs. E.g., pr_number: 'GitHub PR number as a string (e.g., "42"). Required.' and state: 'PR state filter: one of open, closed, all. Defaults to open.' Currently, only 4 tools show parameter descriptions.
• Implement error handling with recovery guidance. When GitHub API fails, return: 'GitHub API error: {status} {message}. If rate-limited, wait 60 seconds. If auth fails, check GITHUB_TOKEN env var.' This guides LLM retry logic.
• Add tool annotations to the MCP server registration. Mark all 10 tools with readOnlyHint=true so clients know they are safe to cache and retry. This improves performance and reduces unnecessary API calls.