This server provides two tools with basic schemas and descriptions, but falls short of production quality. Both tools have input schemas and descriptions present, but descriptions are minimal (under the 194-char baseline), parameter descriptions lack detail about constraints and use cases, and error handling is generic. The 'mcp_fetch' tool is functional but exposes no timeout behavior or rate limits in the description. The 'mood' tool is a trivial demo that provides no real value. Neither tool leverages agentic patterns for error recovery, composition, or output shaping. Output schemas are not documented. No mention of pagination, rate limits, or batching. Error handling returns plain text rather than structured guidance.
Tools (2)
mcp_fetchread onlysource verified60/100
Fetches a website and returns its content
moodread onlysource verified38/100
Ask the server about its mood - it's always happy!
Tool 'mood' is a trivial demo with no meaningful functionality. It does not serve a real user intent and wastes agent reasoning cycles. The name does not start with an action verb that reflects a real operation.
Parameter 'url' in mcp_fetch lacks constraint documentation. No mention of supported protocols (http vs https), max URL length, or handling of redirects (though code does follow them). Description should state 'Supported schemes: http, https. Follows redirects up to 10. Returns plain text or error message.'
No output schema documented for either tool. The rubric requires that tools document what fields/structure they return. Code returns TextContent objects, but this is not explicitly stated in tool definitions. Agents cannot plan downstream actions without knowing the response structure.
mcp_fetchmood
HIGH
Recommendations
Expand mcp_fetch description to at least 150 characters. Include: 'Fetches the content of a website using HTTP GET. Supports http and https schemes. Follows up to 10 redirects. Timeout: 10 seconds. Returns plain text content or an error message if the fetch fails. Use this to retrieve web pages for analysis, summarization, or content extraction.'
Add constraint documentation to the 'url' parameter: 'A valid http or https URL (e.g., https://example.com). Maximum 2048 characters. The server will follow redirects automatically.'
Document the output structure explicitly in the tool definition. Since the code returns TextContent with type 'text' and a 'text' field, state this: 'Returns a TextContent object with fields: type (string, always "text"), text (string, the fetched content or error message).'
Implement structured error responses. Instead of plain text messages, return JSON with { error_code, message, recovery_suggestion }. Examples: { error_code: 'TIMEOUT', message: 'Request timed out after 10 seconds', recovery_suggestion: 'Try again with a simpler URL or check if the site is responding.' }
Remove or repurpose the 'mood' tool. If it must exist as a health-check utility, rename it to 'health_check' and document it as: 'Health check tool. Returns a status message to verify the server is online. Use this to diagnose connectivity issues.'
Document timeout behavior explicitly: 'This tool enforces a 10-second timeout for the request and 5-second timeout for initial connection. If the website does not respond within this window, an error is returned.'
Error handling is minimal and unstructured. Timeout errors, HTTP errors, and generic exceptions all return plain text messages. No guidance on what the agent should do next (retry? ask user? abort?). Should follow error-classification and recovery-guide patterns.
Tool descriptions are significantly shorter than the 194-char baseline. 'mcp_fetch' is 47 chars ('Fetches a website and returns its content') and 'mood' is 53 chars ('Ask the server about its mood - it's always happy!'). Descriptions should explain WHEN to use the tool, WHAT it returns, and any prerequisites. See pattern:tool-description.
The 'question' parameter in the 'mood' tool is not used by the implementation, it is ignored and the response is always the same hardcoded message. This signals to LLMs that the parameter is meaningless, breaking the tool's contract.
No pagination support documented. If mcp_fetch returns large HTML content, no guidance is provided on limits or chunking. Should document max response size, timeouts (10s is hardcoded but not mentioned in description), and redirect limits.
mcp_fetch
Add an enum constraint if certain URL schemes should be rejected or prioritized. If only https is safe, state: 'URL must use https scheme. http URLs will be rejected.' Then validate in code.
For mcp_fetch, consider adding an optional 'max_length' parameter to control response truncation. Document: 'Maximum bytes of content to return. Default: 100000. Useful for avoiding large responses that consume token budget.'
Add per-parameter error guidance. In the 'url' parameter description, add: 'If the URL is invalid or malformed, the server returns an error. Ensure the URL is properly escaped and includes the scheme (http:// or https://).'
Document what kinds of content are supported. 'This tool returns the raw text content of web pages (HTML, plain text, JSON). It does not parse or interpret the content. For binary content (images, PDFs), you will receive an error.'