This MCP server exposes 13 tools organized into three functional groups (diagnostics, JSON operations, Markdown operations). Tool definitions are present with schemas and descriptions, but quality is uneven. Most tools have basic, brief descriptions (20-80 chars) that lack LLM-optimized context about WHEN to use them or WHAT they return. Parameter descriptions are often missing entirely. No tool declares output schemas. Error handling is not documented. The server mixes low-level file I/O tools (json_read, markdown_read) with higher-level operations (json_update, markdown_update_section), violating single-responsibility, agents must manually compose sequences that could be atomic. Security is a major gap: no path traversal protection is documented, and file operations accept arbitrary file_path parameters without validation hints. Overall, definitions are skeletal, sufficient to invoke tools, but insufficient to guide LLM reasoning, error recovery, or secure composition.

• Add output schemas to all tools. Example for json_read: 'Returns: {"content": <parsed JSON object>, "encoding": <detected encoding string>}'
• Add parameter descriptions for all currently undescribed parameters (encoding, updates, merge_mode, content, include_subsections, etc.). Format: '<param>: <type>, <what it controls and why the LLM might care>'
• Extend tool descriptions to 100 - 200 characters, including WHEN to use the tool and WHAT it returns. Example: 'Read JSON file with auto-detected encoding. Returns parsed content as a JSON object. Use this to retrieve configuration or data files before passing to json_get or json_update.'
• Add error handling guidance to all tool descriptions. Example: 'On error: returns error message indicating whether file is missing (404), unreadable (permission denied), or malformed (invalid JSON). Suggest json_validate first if uncertainty.'
• Implement path validation and document it in file_path parameter descriptions. Example: 'file_path: string, Path relative to config directory. Must not contain .. or absolute paths. Max 256 characters.'
• Add tool annotations (readOnlyHint for read tools, destructiveHint for write tools, idempotentHint for update-if-exists tools) so agents know which calls are safe to retry.
• Consider consolidating low-level tools (json_read + json_get) into a single json_retrieve tool, or clearly document dependency chains so agents use them correctly.
• Add merge_mode enum constraint (shallow|deep) and document the behavioral difference for json_update.

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

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