This is a Python-based CLI that exposes 3 tools via LangChain's FileManagementToolkit and a custom retriever-based search tool. All three tools have basic descriptions (10-40 chars each) and minimal parameter documentation. The tools are read-only file operations and codebase search, which is lower-risk than write operations, but the definitions lack depth, error handling guidance, and output schema documentation. No tool annotations (readOnlyHint, destructiveHint, idempotentHint) are present. The schema definitions are minimal, parameters have type declarations but lack detailed descriptions explaining constraints, expected formats, or when to use each parameter. Error handling is not visible in the provided code; responses are likely raw LangChain tool outputs without recovery guidance or categorization. This is a typical early-stage tool integration, functional but not production-grade.

• Expand tool descriptions to 100-200 characters each, explaining: What does it do? When should the LLM call it? What does it return? Example: 'Search the codebase for files and code snippets matching a query. Returns file paths, line numbers, and excerpts. Use this before answering questions about the repository to find relevant context.'
• Add detailed parameter descriptions with format and constraint info. For 'query', specify: 'Natural language search query (keywords, function names, or patterns). E.g., "authentication middleware" or "handle_error". Search is case-insensitive.'
• Document the return schema for each tool. For codebase_search: 'Returns a list of matches, each with: {file_path: string, snippet: string, line_number: int}'. For read_file: '{content: string, encoding: string}'. For write_file: '{success: bool, path: string, message: string}'.
• Add readOnlyHint and destructiveHint annotations. Mark read_file and codebase_search with readOnlyHint=true. Mark write_file with destructiveHint=true and idempotentHint=false (since repeated calls may overwrite different content).
• Add error handling guidance. For read_file: 'If file not found, returns {error: "File not found", path: string}. If path is outside sandbox, returns {error: "Access denied", reason: "path traversal"}'. For write_file: 'If file exists and would be overwritten, return {error: "File exists", path: string, suggestion: "Use overwrite=true to replace"}', or require explicit overwrite parameter.
• Clarify file_path constraints: absolute vs relative paths, sandbox boundaries, supported file types, max file size for read, max file size for write. Example: 'file_path must be relative to the project root; absolute paths are rejected. Max file size: 10MB.'