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

The readOnlyHint annotation already declares the operation safe, and the description reinforces it with the GET endpoint. It adds useful behavior beyond the annotation by stating the returned member attributes (id, username, role, permissions). No contradictions or hidden side effects are suggested.

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 deliver the purpose, output fields, and API mapping with no filler. The core action is front-loaded, and the API endpoint is a useful, non-redundant detail.

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 read-only list operation, the description supplies the output fields, the schema documents all four parameters, and the annotation covers side-effect safety. No output schema exists, but the stated return fields are sufficient for an agent to understand the result shape.

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?

All four parameters have schema descriptions (100% coverage), so the schema carries the semantic load. The description only echoes projectId in the endpoint URL and does not add parameter-level meaning beyond the schema, matching the baseline for full 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 opens with a specific verb and resource ('List members of a project') and enumerates the returned fields, making the tool's purpose unambiguous. Since all sibling tools target different resources (files, branches, strings, etc.), the resource name 'members' cleanly distinguishes this tool without needing an explicit contrast.

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 context is clear: this is the tool to use when project membership details are needed, and no sibling tool covers members. It lacks an explicit when-not-to-use or alternative routing, but no competing tool exists in the sibling set, so the omission is not impactful.

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