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

With no annotations, the description carries the full burden and does disclose real consequences beyond the schema: the claim enters a review queue needing 2 confirmations, and an unfinished claim reopens after 14 days. It does not state the authentication requirement, whether the caller must be a group member, or what happens if a claim is rejected, which leaves gaps for a state-mutating tool.

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 compact sentences with no filler, and the core action is front-loaded ahead of the parameter enumeration and the workflow consequences. The middle clause packs four optional parameters into one long list, which is dense but still readable.

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 7-parameter, nested-object mutation with no annotations and no output schema, the description covers the workflow and parameter meaning well but omits the auth expectation and the shape of the response or failure modes. An agent would still need to infer how to authenticate and what to expect back.

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 43%, so the description must compensate, and it does: it explains that note describes the result, evidence_url must be public https, evidence_sha256 is of the artifact, and link points to an intent or bid. group, milestone_id, and api_key are covered by their own schema descriptions, so the only residual gap is the enum values of link.type, which the prose ('intent or bid') in fact supplies.

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 opens with a specific verb and resource ('Claim an open milestone as done') and immediately frames it within the milestone lifecycle, which distinguishes it from the reviewer counterpart review_group_milestone. An agent can tell what this does without opening the 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?

The phrase 'Claim an open milestone as done' plus 'Other members then review it (2 confirms needed)' tells the agent this is the submission step of a review workflow, so the context of use is clear. What is missing is an explicit exclusion or prerequisite statement (e.g. 'only if the milestone is assigned to you and still open'), and no sibling is named as an alternative.

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