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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false, and openWorldHint=false, so the safety profile is covered. The description's one genuine addition is the admin-only permission requirement, which annotations do not express. It says nothing about result volume, pagination, or ordering for a list operation.

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 short sentences with no filler, and the core action is front-loaded. Size is appropriate; the brevity is close to under-specification rather than wasteful padding.

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?

This is a read-only list with no output schema, so the description is the only place to learn what comes back (member identity plus matched Slack user) and whether results are paginated. It gives neither, leaving the agent to discover the response shape by calling it.

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 description coverage is 0% and the single request_id parameter is undocumented in both schema and description. The description does not explain whether request_id is a correlation token or an idempotency key, nor that it is optional.

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?

States a specific verb and resource: 'List team members and their Slack matches.' The listing scope separates it from the write-oriented siblings (slack_member_set, slack_member_unset, slack_members_match), though 'team members' is ambiguous between Slack workspace users and Yardstick users, which matters in a Slack namespace.

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?

'Admins only' gives an access precondition, which is real usage guidance. However, it never says when to prefer this over yardstick_slack_members_match (the tool that presumably creates those matches) or yardstick_slack_me, so the agent must infer the split.

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