getTestRunAttachmentContent

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

Annotations already declare readOnlyHint=true and openWorldHint=true, which covers the safety and scope. The description adds minimal behavioral context by stating 'Downloads' (implying a read operation returning the raw file), but does not disclose details like content type, size, or error behavior. Given annotations, a 3 is appropriate.

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 a single, efficient sentence that front-loads the core action and resource. No wasted words or redundant 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?

For a straightforward download tool with a read-only hint and no output schema, the description sufficiently conveys the purpose and expected return (file content). It lacks explicit details about return encoding or limits, but these are minor for this operation. The required parameters are clear from the schema, so the tool is adequately specified.

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 all four parameters (revision, projectId, testRunId, attachmentId) are already documented in the input schema. The description adds no additional parameter-level context, meeting the baseline for fully covered schemas.

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 clearly states the action ('Downloads the file content') and the specific resource ('Test Run Attachment'), which is unambiguous and distinguishes it from sibling tools like getTestRunAttachment (which likely returns metadata) and getTestRunAttachments (which lists attachments).

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 description implies usage for retrieving file content, but it does not explicitly contrast it with alternatives such as getTestRunAttachment or state when to prefer this tool over metadata retrieval. An agent can infer from the name, but no explicit guidance is given.

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