This MCP server provides 22 well-structured git-filter-repo tools with comprehensive input schemas and descriptions. Most tools follow proper naming conventions (verb-first) and include detailed parameter constraints. However, there are significant gaps: (1) Output schemas are NOT documented, responses are inferred from implementation but not formally declared in the tool definitions, which violates pattern:tool-schema. (2) Error handling lacks recovery guidance, tools return error codes but do not guide the LLM on what to do next (pattern:recovery-guide). (3) Several parameters lack descriptions or have generic descriptions. (4) No tool annotations (readOnlyHint, destructiveHint) are present in the schema definitions, despite the server correctly categorizing tools as READ_ONLY, WRITE, or DESTRUCTIVE. (5) Destructive tools support dry_run but lack explicit confirmation patterns. Overall, schemas are present and mostly well-formed, descriptions are generally present, but integration with LLM workflows and output documentation are weak.

• Add formal output schemas to all 22 tool definitions. For each tool, document the response object with field types and descriptions. Example: 'Returns an object with fields: {"commits": [{"hash": string, "author": string, "message": string, "date": string}], "total_count": integer}'.
• Enhance error responses with actionable recovery guidance. Replace bare error codes with prose guidance: instead of 'REPO_NOT_FOUND', return '{"error": "REPO_NOT_FOUND", "message": "Repository path does not exist", "suggestion": "Verify the path exists and is a valid git repository, or call validate_repo_safety() to diagnose"}'.
• Add tool annotations to the JSON Schema definitions. For each tool in to_definition(), append 'readOnlyHint' (true for READ_ONLY tools), 'destructiveHint' (true for DESTRUCTIVE tools), and 'idempotentHint' (true for idempotent operations like create_backup). This enables LLMs to understand operation safety without manual reasoning.
• Implement MRTR confirmation pattern for destructive operations. When dry_run=false on tools like remove_files, return a result with 'input_required' flag and ask the user 'Delete 5 files from repository? Review the dry_run output above. Reply with confirmation to proceed.' This prevents accidental data loss.
• Standardize response field naming across similar tools. All commit references should be 'commit_hash' (or 'commit_id'), all file paths should be 'file_path', all sizes should be 'size_mb'. This enables LLMs to reliably chain tool outputs as inputs without reinterpretation.

Inferred effective spec: <=2025-11-25.

• Relies on Logging (deprecated) - log to stderr or use OpenTelemetry