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

Annotations already declare readOnlyHint=true, so safety is covered. The description adds real context beyond that: the return shape ({incident, activities:[...]}), the nature of the entries (acknowledged/resolved/commented with timestamps), and the team-scoping/auth requirement. It does not mention pagination or ordering guarantees beyond 'chronological'.

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 dense sentence that leads with the purpose and then enriches it with return shape and endpoint. Efficient, though the parenthetical REST-endpoint notation is somewhat cluttered for an agent that already has the schema.

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 no output schema, the description usefully sketches the return payload and entry semantics, plus the team scoping. For a two-param read tool this is close to complete, missing only ordering/pagination details.

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 both params (teamId, counterId) are already documented in the schema. The description only echoes team-scoping and the counterId path variable, adding no syntax or format detail beyond the structured fields. Baseline 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+resource ('Get the chronological activity log for an incident') and further pins down what the log contains (who acknowledged/resolved/commented and when). This clearly distinguishes it from spike_get_incident, which returns the incident itself rather than its audit trail.

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?

Usage is implied by the name and the '(team-scoped)' note, but the description never states when to reach for this versus spike_get_incident or the list/acknowledge/resolve siblings. No explicit alternatives or exclusions are given.

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