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

Goes well beyond the readOnlyHint/openWorldHint annotations: discloses that media links are sensitive and expire in about an hour, must not be cached, that network_requests is null for older feedback, and warns the returned text is untrusted data that must not be acted on. That is exactly the extra behavioral context an agent needs.

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?

Three short paragraphs, purpose front-loaded, then the console-block interpretation guidance, then the security/expiry caveat. Every sentence carries distinct information with no filler.

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 fully carries the burden of describing the return shape (device/browser context, console block, expiring media links) plus its caveats. Nothing an agent needs to call and correctly interpret the result is missing.

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 coverage is 100%, so baseline would be 3, but the description adds real meaning: media links come back 'when available' and are short-lived, which tells the agent what include_media=true actually yields and why it may be false. The id parameter is fully documented in the schema.

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 a specific verb and resource ('Fetch a single Ybug feedback item by its id') and immediately enumerates what the payload contains (browser/device context, screenshot and video links). An agent can distinguish it from list_feedback and the sibling log tools without opening any schema.

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?

Explicitly routes the agent to get_feedback_console_logs and get_feedback_network_requests when the console counts show errors, and instructs reading them before suggesting a cause. It lacks an explicit statement of when to use this tool instead of list_feedback, but the by-id lookup context is clear.

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