Single tool with adequate naming and schema, but description lacks LLM-optimization guidance. Tool name 'utility_shorten_url' is clear and verb-prefixed. Input schema is complete with proper types and descriptions for both parameters. However, the description is overly long (280+ chars) and includes negative guidance ('Do NOT use for...') that clutters the intent signal. Output schema is entirely missing, LLMs cannot plan downstream operations without knowing what fields are returned. No error handling guidance documented. The tool is straightforward but lacks production-grade polish.

• Add outputSchema to the tool definition documenting {shortUrl: string, code: string, originalUrl: string, createdAt: string, totalUrls: number}. This enables LLMs to plan downstream operations and extract the short URL reliably.
• Rewrite description to focus on intent: 'Shorten a long URL into a compact link. Returns the shortened URL, hash code, original URL, and creation timestamp.' Remove negative guidance about other tools.
• Add error handling guidance: 'Returns 400 if URL is invalid (must start with http:// or https://). Returns 409 if custom_alias is already taken, suggest a different alias.' This guides LLM recovery.
• Add minLength, maxLength, and pattern constraints to custom_alias in the schema: {minLength: 3, maxLength: 20, pattern: '^[a-zA-Z0-9]+$'}. This is machine-parseable and prevents LLM hallucination.
• Trim description to ~100 chars: 'Shorten a URL into a compact link. Accepts optional custom alias (3-20 alphanumeric chars). Returns shortened URL, code, original URL, and timestamp.' Shorter descriptions preserve token budget and clarity.

Inferred effective spec: 2025-06-18+.

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