create_review_submission

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

Annotations already declare destructiveHint=true, idempotentHint=false and openWorldHint=true, so the safety profile is known. The description's 'MUTATES' wording reinforces the write nature but adds little beyond that, and it does not say what state is lost, whether an existing draft is replaced, or what permissions are needed. With annotations covering the basics, this is adequate but thin.

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?

A single short sentence with the mutation intent front-loaded and nothing redundant. The all-caps 'MUTATES' is effective emphasis but slightly informal for a technical definition.

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 one-parameter mutation with no output schema, an agent still lacks two things: what the created submission looks like or returns, and how non-idempotent duplicate behavior manifests (error vs. new container). The description does not address either, leaving a meaningful gap.

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?

There is a single required parameter (appId) with 0% schema description coverage, and the description never mentions it. The agent gets no meaning for appId from either source, so the description fails to compensate for the coverage gap.

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 resource: 'create a submission container for an app.' The prefix 'MUTATES App Review draft state' scopes it to draft-stage state, which helps distinguish it from submit_review and release_version, though it never names a sibling explicitly.

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 guidance. An agent must infer that this precedes add_version_to_submission and submit_review from the phrase 'draft state' alone, and nothing says what to do if a draft submission already exists.

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