testflight_distribute

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

No annotations are provided, so the description carries the full burden. It discloses that the tool mutates distribution state (adds a build to beta groups) and that uses_non_exempt_encryption can be left as-is with None, but it does not disclose side effects, required permissions, whether the operation is reversible, or what happens if the build is already in a group. The 'None = leave as is' note is helpful but incomplete.

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?

The description is a single sentence that front-loads the main action and includes a parenthetical clarification for the encryption parameter. It is compact and readable, though the parenthetical could be slightly clearer.

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 mutation tool with no annotations and no output schema, the description is too thin. It does not explain the expected workflow (e.g., call testflight_builds first to get ids), what a successful response looks like, or failure modes. The reference to testflight_builds helps but is not enough.

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%, so the description must compensate. It explains uses_non_exempt_encryption and beta_group_ids source, but build_id is only implied as the target build. It does not explain the format of beta_group_ids or the meaning of the default false for uses_non_exempt_encryption versus None.

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 states a specific action ('Answer export compliance... and add it to TestFlight beta groups') with a clear resource (a processed build) and references the sibling tool testflight_builds for ids. It is distinguishable from siblings like testflight_builds, though it doesn't explicitly name a sibling it is not.

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 description implies usage context: it operates on a processed build and takes beta group ids from testflight_builds. It does not explicitly state when to use this tool versus alternatives, nor does it mention prerequisites like having a processed build or being authenticated with App Store Connect.

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