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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=true, so the safety profile is covered. The description adds nothing beyond restating the raw HTTP route, offering no context on what the lookup returns, what happens if the id is unknown, or any auth requirement.

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?

It is short and front-loaded, but the second sentence simply echoes the endpoint path, which adds little for an agent that already has the structured tool name and schema. Two clipped fragments spend characters on redundancy rather than the missing usage context.

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 one-parameter read tool with annotations covering safety, this is barely sufficient. There is no output schema, so the description could usefully say what a user record look-up yields, and it does not address the current-user or list-users alternatives in a crowded sibling set.

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 single parameter is fully documented in the schema, including the 'id / pkey' clarification. The description's '{user_pkey}' mirrors that mapping but adds no syntax or format detail beyond the schema, so the baseline 3 applies.

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 fragment 'One team member by id' does convey a singular fetch of a user keyed by id, and the endpoint path corroborates it. But it omits the verb entirely and gives no explicit contrast with close siblings like tokeet_get_current_user or tokeet_list_users.

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?

There is no when-to-use guidance, no prerequisite or permission note, and no mention of the alternative tools that retrieve users. An agent must infer the id-vs-current-vs-list distinction on its own.

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