mcp-warden is a security/integrity tool, not a production MCP server. The 11 'tools' are test fixtures across 4 different fixture servers (clean_server.py, listchange_server.py, poison_server.py) used to validate the warden CLI's ability to detect and classify malicious/unsafe tool behavior. Tool definitions are minimal: descriptions exist but are generic (e.g., 'Read the contents of a file from disk'), parameters lack detailed constraints, and output schemas are not documented. Duplicate tool names (read_file, list_dir appear twice) indicate these are fixture definitions, not a cohesive production server. The poison_server.py tools (ansi_tool, secret_tool, exfil_tool, ip_literal_tool, inject_tool) are intentionally malicious test cases with trivial schemas. No tool has parameter descriptions beyond the bare name. Error handling, recovery guidance, and composition patterns are absent. This is a testing harness, not a tool quality baseline.

• Rename poison_server tools to reflect their behavior: 'return_ansi_escapes', 'echo_secret_token', 'return_exfil_url', 'return_private_ip_url', 'return_injection_phrase' instead of generic names like 'ansi_tool'.
• Add parameter descriptions to all tools. For 'path' parameters, specify: 'Absolute or relative file path. Must be within allowed directories (e.g., /data, ./files). No symlink traversal outside root.'
• Document output schemas for each tool. E.g., read_file returns {"content": string, "encoding": string, "size_bytes": integer}; list_dir returns {"entries": [{"name": string, "type": "file"|"dir", "size_bytes": integer}], "total": integer}.
• Add error handling and recovery guidance. E.g., 'If path not found, try list_dir() on parent directory to discover available files.' For run_command, return {"exit_code": integer, "stdout": string, "stderr": string} with clear error messages.
• For run_command, implement command validation: whitelist allowed commands, reject shell metacharacters (|, &, ;, $, backticks), and document the restriction in the description. Consider splitting into separate tools (run_ls, run_grep, etc.) for safer composition.