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

Annotations only say readOnlyHint=false and destructiveHint=false; the description adds real value by disclosing the required 'repo' scope, the write-access prerequisite, and that a reason is mandatory and audited. It does not contradict the annotations, since dismissing a review is a state change rather than a destructive deletion. It stops short of saying what happens to blocked merge state afterwards or what errors arise without write access.

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?

Two tight sentences with the action and its scope front-loaded, followed by prerequisites and audit note. No filler, no restating of the title, every clause carries information.

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 5-parameter mutation tool with no output schema, the description covers the essentials: scope of the operation, auth requirements, and the audited reason. The remaining gap is that it says nothing about outcomes or failure modes, but that is a minor omission given the absence of an output schema.

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 only 40%, so the description has to compensate: it clarifies the meaning of 'reviewer' (only this one's request) and confirms 'reason' is required and audited. It adds nothing about owner, repo, or number, which remain undocumented in both schema and description.

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 ('dismiss'), a specific resource ('standing changes-requested reviews on a PR'), and the effect ('so they no longer hold the merge'). It also scopes the operation (all reviews or one reviewer's), which distinguishes it from the inverse sibling merjax_request_changes without needing to be named.

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?

Usage is implied by the stated effect: an agent can infer this is used when requested-changes reviews are blocking a merge. However, it never states when NOT to use it, nor names alternatives such as merjax_request_changes or merjax_approve_pr, so routing depends on inference.

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