This MCP server exposes only a single placeholder tool with minimal viable definition. The tool exists but has extremely limited utility. No actual tools are implemented beyond the placeholder, making this effectively a framework/template rather than a functional tool server. The placeholder tool has a basic description and risk annotation but lacks any input schema definition, parameter descriptions, or documented output structure. This is a bootstrap/example implementation rather than a production tool server.

• Add a proper JSON Schema input definition to the placeholder tool with explicit field types, descriptions, and required flags. Minimum: { type: 'object', properties: { ... }, required: [...] }
• Rename tool from 'placeholder' to a verb_noun form that reflects its actual action (e.g., 'echo_message', 'test_connection', 'healthcheck'). Generic names prevent LLM tool selection.
• Expand tool description from current ~60 chars to 100-200 chars. Include: (1) what the tool does, (2) when an agent should call it, (3) what it returns. Example: 'Echo back a message for testing. Use this to verify the server is responding correctly. Returns the input message with timestamp.'
• Document all input parameters with name, type, description, constraints. E.g., if placeholder accepts a 'message' param: { name: 'message', type: 'string', description: 'The message to echo back (max 500 chars)', required: true }
• Document the response/output schema. Specify return fields, types, and examples. E.g., { success: boolean, echo: string, timestamp: string, server_version: string }
• Add error handling guidance in tool description: 'If invoked with missing message parameter, returns error code E001 with hint to provide a message string. If message exceeds 500 chars, returns error E002 with trimming suggestion.'
• Consider if this tool should exist at all in production. If mcpn is a pure orchestration/workflow framework with no built-in tools, document that explicitly and provide examples of how users add their own tools.

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

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