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

Annotations already declare idempotentHint=true and destructiveHint=false, so the safety profile is covered. The description adds real value by disclosing the stored-report short-circuit (explaining the idempotency) and the 'pending with nothing uploaded' outcome, but it omits cost/latency expectations, error conditions beyond pending, and what 'says so' actually returns.

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 tight, parallel sentences that front-load the most common case and use zero filler. The telegraphic phrasing ('says so') costs a little precision but nothing is wasted.

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?

There is no output schema, so the description is the only place to explain what the returned 'report' contains, and it does not. For a single-parameter, non-destructive, idempotent call the state coverage is decent, but the return shape and the submission_id source remain unexplained.

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 0% for the single required parameter, submission_id, so the description must carry the burden of explaining it and does not — no format, source, or origin is given. It mentions 'upload_url' and 'inline chunks' only as submission states, not as parameter guidance, leaving the one input undocumented in both places.

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 enumerates three concrete state-dependent outcomes (inline-chunk submission gets validated/scored/stored and returns a report; uploaded submission returns the stored report; empty pending submission returns a status message), which makes the tool's function unmistakable. It falls short of 5 because it never names a sibling or explicitly frames this as the 'finalize' step relative to begin_submission.

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 state-based enumeration implicitly tells the agent which scenario it is in, which is useful routing guidance. However there is no explicit prerequisite statement (e.g. that begin_submission must have run first) and no exclusion or named alternative, so the guidance is implied rather than stated.

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