Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description carries the full burden and does well: it discloses the auth/payment requirement ('x402 or a free API key') and what the call returns (score breakdown, component history, health checks). It does not explicitly state read-only behavior, which would be expected for a detail/lookup tool.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

Two tightly packed sentences with the payload description front-loaded and the access note trailing. Minimal waste, though the '[Wicked Registry]' prefix is branding rather than informational content.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Without an output schema, the description does the work of enumerating the returned data, and the access requirement is covered. What remains unstated is return shape/format and any permission granularity, but for a simple two-parameter detail endpoint this is close to sufficient.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so both api_key and tool_id are already documented in the schema, including the env-var override and the origin of the id. The description adds no syntax or format detail beyond that, so the baseline 3 applies.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

States the specific resource (one registry tool) and enumerates the payload: full score breakdown, component history, and recent health checks. The retrieval verb is only implied, and it does not explicitly name sibling tools like registry_lookup or registry_search_tools to sharpen the boundary, though the schema's tool_id description partially compensates.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The phrase 'x402 or a free API key' communicates the access/payment path, which is useful, but there is no explicit when-to-use guidance versus registry_lookup or registry_search_tools. The routing to this tool is only implied indirectly through the tool_id parameter description.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.