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

No annotations are provided, so the description must carry the full behavioral burden. 'Lists' implies a read operation, but the description does not state whether it is read-only, what happens when status is omitted, or whether there are permission or pagination considerations. It adds only the optional filtering hint and leaves broader behavior unspecified.

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 efficient sentence with the main action front-loaded. Every phrase contributes: the resource, the optional filter, and the filter parameter name. There is no unnecessary repetition or filler.

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?

The tool is simple: one optional enum parameter and no output schema. The description covers the basic operation and the filter, but it does not explain what 'capabilities' are or what the response contains. Given the low complexity, it is minimally adequate but leaves some context to inference.

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 sole parameter is mentioned as an optional status filter, which adds useful context beyond the bare schema. The schema itself defines the allowed enum values 'live' and 'planned' but does not describe them. With only one parameter and enum values present, the description's brief mention is adequate, though it could explain what the statuses represent.

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 states a specific verb and resource: 'Lists humancollab capabilities.' It also mentions the optional status filter, giving an agent a clear sense of the operation. It does not explicitly distinguish itself from the many list_* siblings, but no sibling appears to cover capabilities, so the risk of confusion is low.

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 phrase 'optionally filtered by status' implies that callers can use the tool without a filter or narrow results by status. However, it gives no explicit guidance on when to choose this tool over alternatives or what the status values mean in practice. Usage is inferable but not fully specified.

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