CodeGraphContext provides 14 code analysis tools with mostly clear descriptions and well-structured schemas. However, several critical gaps limit production readiness: (1) Missing output schemas documented for most tools, LLMs cannot predict response structure for downstream tool chaining; (2) Parameter descriptions lack specificity on constraints (e.g., depth range for analyze_code_relationships is stated as 1-20 but not validated in description); (3) No error handling guidance, tools do not explain failure modes or recovery steps; (4) The delete_repository tool has strong warning text but lacks a dry-run/confirmation step despite being marked DESTRUCTIVE; (5) Many optional parameters (repo_path, graph_name) lack default behavior documentation. Strengths: All 14 tools have clear action-verb naming (add_, check_, list_, find_, analyze_, execute_, delete_, calculate_, visualize_); all have substantive descriptions (100+ chars each, well above the 34-char p10 baseline); schemas are present and properly typed with enums and required fields. The analyze_code_relationships tool exemplifies good design with a constrained enum of 14 query types, clear required/optional separation, and depth bounds. However, the lack of output schema documentation and error recovery guidance prevents this from reaching A-grade status.

• Document output schemas for all 14 tools. Example for find_code: 'Returns {code_snippets: [{file_path: string, line_range: [int, int], content: string, match_score: float}], total_matches: int, next_cursor?: string}'. This enables downstream tool chaining and LLM planning.
• Add error handling descriptions to all tools. Example for add_code_to_graph: 'If repo_path does not exist or is not readable, returns error with message "Repository not found at <path>. Ensure the path is absolute and accessible.". If job queue is full, returns "Job queue at capacity. Check list_jobs() and wait for completion before retrying."'
• Add dry-run capability to delete_repository. Parameter: 'dry_run: boolean (default: false)'. If true, returns {would_delete_count: int, files_affected: [string], relationships_affected: int} without modifying the graph. Require explicit dry_run=false confirmation in description.
• Specify parameter constraints in all descriptions. For find_code: 'edit_distance must be 0 - 2; larger values exponentially increase query time.' For analyze_code_relationships: 'depth traversal limit is 1 - 20; depths >10 may timeout on large graphs.'
• Document default behavior for optional parameters. For graph_name: 'Defaults to the graph configured in CGC_GRAPH_NAME environment variable. If not set, uses 'default' graph. Call list_graphs() to see available graphs.' For repo_path: 'If omitted, searches across all indexed repositories.'
• Add pagination to list_jobs and list_indexed_repositories. New parameters: limit (int, default 20, max 100), offset (int, default 0). Response includes total_count and has_more boolean. Return in description: 'Results are capped at 100 items per page. Use offset to iterate through larger result sets.'