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

Annotations already declare write (readOnlyHint=false), idempotent, and non-destructive. The description adds behavioral color — the submission is 'accepted as recorded' rather than validated, and identical retries return the same receipt — which reinforces idempotency meaningfully. It still omits auth requirements (agent_key, lease_token issuance/expiry) and any notion of failure modes.

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 sentences, front-loaded with the action and ending with the idempotency guarantee. Nothing is redundant, though the middle sentence ('It is accepted as recorded') is abstract enough to be worth an extra word of grounding.

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?

A write tool with nested required objects, no output schema, and dependencies on sibling tools (enroll, claim_run, release_run) gets no explanation of that lifecycle. An agent would not know that a lease_token must come from claim_run or how this differs from answer_study.

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 only 33%, so the schema does not carry the load. The description maps loosely onto answer, evidence, and limitations, but says nothing about run_id, lease_token, context, or assistant — the required lease_token in particular is invisible unless the caller reads the nested 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 object — recording a typed answer — plus what accompanies it (public evidence, stated limitations). However, it never distinguishes itself from the sibling 'answer_study', which reads like the same act against a different resource, so an agent cannot tell the two apart without opening both schemas.

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?

There is no when-to-use or when-not-to-use statement, no mention of the prerequisite workflow (claim_run yielding a lease_token, like release_run), and no named alternative. All of that has to be inferred from sibling names.

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