Change Member Role

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

No annotations are provided, so the description must disclose behavioral implications. It only states the mutation (changing a role) but fails to mention side effects, permission requirements, reversibility, or any constraints (e.g., cannot demote the last admin). This is a significant gap for a state-changing tool.

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, concise sentence that includes the essential action and the valid role options. There is no redundant wording or unnecessary detail, making it highly efficient.

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 role-change tool with two parameters fully documented and an output schema present, the description is minimally sufficient. However, it lacks context about prerequisites (e.g., admin permissions) and potential restrictions, which could be important for correct invocation in complex scenarios.

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?

The input schema fully describes both parameters (member_id and role), and the description adds no extra meaning beyond listing the allowed role values, which are already in the schema. With 100% schema coverage, a baseline 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 clearly states the action ('Change a circle member's role') and specifies the resource (circle member) plus the valid values (admin, member, or manager). It is specific enough to distinguish from sibling tools like delete_circle_member or get_circle_members.

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?

No guidance is provided on when to use this tool versus alternatives. The description simply states what it does without mentioning any exclusions or conditions, such as 'Use this to update roles, not to remove members.'

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