beta_testers__beta_groups__add

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

Annotations already indicate this is a non-read-only, non-idempotent, non-destructive mutation. The description simply says 'Link', which confirms a mutating add operation, but it does not clarify whether this appends to existing relationships or replaces them. With annotations covering the safety profile, the minimal description adds limited extra context.

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 states the action and includes the endpoint URL. Every word earns its place, with no redundant phrases.

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?

The tool is simple with only two parameters, a detailed schema, and annotations. The description plus schema gives enough for the agent to invoke it, but it lacks explicit guidance on when to use this versus the inverse sibling tool. This minor gap prevents a perfect score.

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% and the schema itself includes descriptions for both parameters (id as 'ID from the matching list call' and body as a JSON:API request). The description adds no additional parameter meaning beyond what the schema already provides, so the baseline score of 3 is appropriate.

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 uses a specific verb ('Link') and identifies both resources ('beta groups' and 'beta tester'), making the purpose unambiguous. The endpoint URL further clarifies the exact operation, and it is distinct from sibling tools like builds__beta_groups__add or beta_groups__beta_testers__add.

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 when to use the tool by stating the direction of the link (beta groups to a beta tester), but it does not explicitly contrast it with similar tools like beta_groups__beta_testers__add. No exclusions or alternative tool names are provided, leaving some ambiguity for an agent choosing between inverse relationship tools.

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