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

The description goes well beyond the annotations by explaining the URL mechanics (credential in query string, no headers), verifiable response fields (byte count, SHA-256), precise 401/404/403 semantics, and the edge-protection User-Agent pitfall. This is exactly the kind of behavioral context that annotations cannot convey.

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?

The description is front-loaded with the core purpose, followed by valuable operational details and a clear error-code warning. The anecdote about the 31-artifact download pass is slightly verbose but reinforces the User-Agent warning; overall every sentence contributes meaningful information.

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?

With no output schema, the description compensates by naming the key response elements (byte count, SHA-256) and detailing error behavior. It does not state the URL expiration time or the full set of metadata fields, but the essentials for calling and using the result are present.

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?

The input schema has 100% description coverage for the single parameter, artifactId, so the schema already defines the parameter. The description adds no additional parameter-level meaning, which matches the baseline of 3 for high schema coverage.

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?

The description states a clear verb and resource: 'Get artifact metadata plus an expiring authorized download URL.' This is much more specific than the title, and the mention of metadata plus a download URL distinguishes it from siblings like artifacts_list. An agent can tell exactly what this tool returns.

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 intended use is implied by the purpose statement, and there is useful client guidance about User-Agent handling and error codes. However, it does not explicitly say when to choose this tool over sibling tools like artifacts_list, nor does it state when not to use it.

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