User Events

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

Description adds that it lists 'public' activity, which is a behavioral trait not in annotations. Annotations already declare readOnlyHint=true, destructiveHint=false, idempotentHint=true. No contradictions. Pagination behavior is implied by parameters but not explicitly described, but the added value is sufficient.

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 concise sentences, no unnecessary words. Front-loaded with the core action and input format, followed by a practical use case. Every sentence earns its place.

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 description adequately covers purpose and use case. Given no output schema and full schema coverage, it covers the essential context. There is no mention of filtering or sorting options, but these are documented in the schema, so the description is complete enough for selection and basic invocation.

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 100%, so the schema already documents all parameters. The description mentions 'by username or numeric ID' which mirrors the schema's 'user' parameter description. No additional parameter meaning is added beyond the schema, so baseline score of 3 is appropriate.

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 clearly states it lists a specific user's public GitLab activity feed, specifying input as username or numeric ID. It gives a concrete use case: tracking what a teammate has been working on, which distinguishes it from sibling tools like list_my_events and list_project_events.

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 description provides a clear use case ('tracking what a teammate has been working on'), implying when to use. However, it does not explicitly state when not to use or compare to siblings, though siblings like list_my_events and list_project_events are distinct.

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