gitlab_project_members

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

readOnlyHint=true already tells the agent this is a safe read. The description adds the useful detail that returned ids feed MR assignment, but says nothing about pagination, ordering, or default page size (which is only implied elsewhere). Adequate but not rich against the annotation coverage.

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?

A single, front-loaded sentence with the core purpose first and the payoff (assignee_id ids) second. No filler or redundancy.

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?

With a 100%-documented schema, an output schema covering the response, and a read-only annotation, the agent has nearly everything it needs. Only minor gaps remain, such as pagination/ordering expectations not being stated in the prose.

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 every parameter (page, search, perPage, project) is documented in the schema itself. The description adds no parameter-level detail, so the baseline of 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?

States a specific verb and resource ('List a project's members') plus the fields returned ('access level and numeric user id'), and clarifies the downstream use of those ids for assignee_id. This distinguishes it from the nearby gitlab_users_search alternative.

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?

Clearly signals the context in which the tool is needed - obtaining numeric user ids to pass as assignee_id in gitlab_mr_create/update. It does not, however, explicitly state when to prefer this over gitlab_users_search or mention exclusions.

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