Remove List Member

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

Annotations already declare readOnlyHint=false, destructiveHint=true, and idempotentHint=true, so the safety profile is clear. The description adds the specific operation but does not provide extra context such as permission requirements, side effects, or behavior when the user is not a member. It does not contradict annotations.

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 14-word sentence that front-loads the action and the two necessary identifiers. Every word is useful, and there is no unnecessary filler or repetition.

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 2-parameter tool with complete schema coverage and rich annotations covering safety and idempotency, this description is adequate. It does not need to explain return values since there is no output schema, and it conveys the core purpose clearly. It could mention permission or failure behavior, but those are not critical for this simple operation.

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 documents both parameters (list_id and username) with descriptions and validation rules. The description merely repeats the parameter names without adding additional semantic meaning beyond what the schema already provides. Baseline 3 is appropriate given 100% schema coverage.

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 a specific action ('Remove a user from a list') and the key resource (list member), immediately distinguishing it from sibling tools like x_add_list_member and x_delete_list. It also identifies the two required identifiers, making the tool's function unambiguous.

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 the use case through its action verb, but it does not explicitly state when to use this tool versus alternatives or mention any exclusions. There is no reference to sibling tools or scenarios where a different tool should be used, so guidance is only implicit.

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