add_build_to_beta_group

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

No annotations are provided, so the description carries full burden for behavioral disclosure. It mentions a prerequisite but does not explain what happens if the build is not approved, if the build is already in the group, or if the operation is idempotent. Significant behavioral gaps remain.

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 sentences, front-loaded with the main action. No wasted words. However, it could incorporate more useful information without increasing length, such as error conditions.

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 simple two-parameter tool with no output schema, the description is mostly adequate. It covers the core action and one key prerequisite, but lacks details on error handling, idempotency, and differentiation from siblings. Slightly more context would improve completeness.

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 100% with both parameters adequately described. The description adds no additional meaning beyond the schema; it only restates the parameter names in the action. Baseline for high coverage is 3.

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?

Description clearly states the action: 'Add a build to a beta group for TestFlight distribution.' It specifies the verb 'add', the objects 'build' and 'beta group', and the context 'TestFlight distribution'. This distinguishes it from siblings like 'remove_build_from_beta_group'.

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?

Provides a prerequisite: 'The build must be approved for beta testing (or internal only).' This gives some context, but there is no explicit comparison to alternative tools or guidance on when not to use it. Usage is implied rather than explicitly stated.

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