custom_reports_get

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

Without annotations, the description discloses the polling behavior and expected output fields. It implies a read operation but does not cover rate limits, error states, or authentication requirements.

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?

Single sentence with no unnecessary words, front-loading the action and providing critical details (polling and columns) efficiently.

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?

No output schema exists, but the description lists the columns and polling requirement. It lacks information on errors, retries, or limits, but is sufficient for a simple polling fetch.

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 50% (orgId has a description, reportId does not). The description does not elaborate on either parameter, leaving reportId unexplained. Baseline is 3 due to moderate coverage, but no added value.

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 it fetches a single Impression Share report and mentions polling until COMPLETED, with specific column names. It distinguishes itself from sibling tools like `custom_reports_create` and `custom_reports_list`.

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 instructs to poll until state=COMPLETED to read rows, which is a key usage guideline. However, it does not mention when not to use this tool or alternative approaches for filtering or other report types.

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