Plumbline exposes only 1 tool ('echo') with a trivial definition. The tool has a generic description ('hello from dep-ok') that provides no actionable context for LLM selection. Input schema is an empty object with no parameters, violating the requirement that every parameter have a description and type. The tool name 'echo' is generic and does not follow verb_noun conventions (e.g., 'test_echo' or 'validate_echo'). No output schema is documented. This appears to be a test/demo server rather than a production MCP implementation. The codebase focuses on transparency logging (httpserver) and npm package validation, not tool provisioning.

• Rename 'echo' to a verb_noun pair that reflects its actual purpose (e.g., 'validate_package', 'check_dependency', 'test_connection').
• Expand description to 50-200 characters explaining what the tool does, when to call it, and what it returns. Example: 'Validates npm package integrity and dependency tree. Returns status and any security warnings found.'
• Define input schema with explicit parameters (e.g., package_name, version, check_type), each with type and description.
• Document output schema with typed fields (e.g., status: string, warnings: array, timestamp: string).
• If this is a test server, clarify its purpose in README and consider adding realistic tools for npm validation, dependency auditing, or security scanning.

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

• Relies on Stateful initialize / Mcp-Session-Id (removed; protocol is stateless) - make each request self-contained