Single tool 'snap_router' has a well-structured input schema with proper types, enums, and descriptions. The tool description is comprehensive (280+ chars) and explains the discovery use case clearly. Output schema is documented with typed fields. However, the tool performs a single, narrow function (discovery only, not execution) and lacks error recovery guidance. Parameter descriptions are adequate but could be more prescriptive about constraints. No multi-step composition patterns or batch operations. The server is a thin client wrapper around a hosted API, which limits complexity but also limits the depth of tool design patterns that can be demonstrated.

• Add explicit error recovery guidance: map HTTP status codes to actionable messages. E.g., 'HTTP 500: Service unavailable. Retry in 30s or contact support.' instead of raw status text.
• Document parameter constraints in descriptions: 'max_price_usdc: numeric, non-negative (e.g., 0.01 - 10000). Omit to disable price filtering.' Add min/max bounds to 'k' in the description, not just schema.
• Clarify default behavior for 'registries': 'If omitted, searches both x402 and mcp catalogs. Restrict to one with registries=["x402"] or registries=["mcp"].'
• Add result limit guidance to tool description: 'Returns up to k results (default 8, max 25). Results are ranked by relevance; no pagination. For large catalogs, refine the task description to narrow results.'
• Populate 'works_well_with' in responses with tool names from the picks, and document in the output schema what this field contains and how the LLM should use it.

Inferred effective spec: 2025-06-18+.

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