Server has 7 tools with complete input schemas and descriptions present. However, descriptions are generic and lack LLM-optimization guidance. Parameter descriptions are minimal (e.g., 'The bug ID to fetch information for'). Output schemas are not documented, LLMs cannot infer what fields to expect from responses. Error handling exists but lacks recovery guidance. Tool naming follows verb_noun convention (bug_info, add_comment) but some names are ambiguous (server_url, bug_url, unclear what they return). No tool annotations (readOnlyHint, destructiveHint) despite clear risk levels. Missing pagination guidance for bugs_quicksearch despite accepting limit/offset. Overall: functional but below production baseline.

• Document output schemas for all tools. Example for bug_info: 'Returns {id: int, summary: string, status: string, assigned_to: {id: int, name: string}, created: ISO8601, modified: ISO8601, ...}'. This enables LLMs to chain tools correctly.
• Rename 'server_url' → 'get_server_url' and 'bug_url' → 'get_bug_url'. Add descriptions: 'Returns the full URL to access this bug in Bugzilla' (20-50 chars, action-oriented).
• Add tool annotations via fastmcp. Mark add_comment with destructiveHint=true. Mark all read tools with readOnlyHint=true. This signals to LLMs which tools have side effects.
• Expand parameter descriptions to 50-200 chars with constraints. Example: 'bug_id (integer, 1 - 999999): The Bugzilla bug ID. If not found, returns ToolError with available search suggestions.'
• Enhance error messages with recovery guidance. Example: 'Failed to fetch bug info for ID 999999: Bug not found. Try bugs_quicksearch(query="summary:keyword") to find the correct ID.' This guides LLM self-correction.