get_issue_activity

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

Annotations already declare readOnlyHint=true and idempotentHint=true, so safety is covered. The description adds useful behavioral details: results are newest-first and unified/aggregated. It does not, however, disclose pagination behavior or filtering implications.

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?

One sentence, front-loaded with the verb and object. No wasted words.

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 activity tool with an output schema, the description is adequate but not complete: it does not mention the configurable types filter or the cursor-based pagination, and it lacks usage context vis-à-vis sibling tools. The presence of an output schema mitigates the need to describe return values, but filtering options are central to the tool's behavior.

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 only 43% – only issue_id and project_ref are described in the schema. The tool description adds no parameter information, leaving limit, order, types, cursor, and agent_session_handle without additional context. Since coverage is low, the description fails to compensate for undocumented parameters.

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 uses the specific verb 'Get' and defines the resource as a 'unified newest-first timeline of issue work and artifacts,' clearly distinguishing it from siblings like get_issue (which likely returns issue state) and get_changes (which may return diffs).

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 gives no explicit guidance on when to use this tool over alternatives; it only implies its use for an activity timeline. No alternatives or exclusions are mentioned, though the 'unified' phrasing hints it aggregates multiple sources.

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