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

Annotations already cover the safety profile (readOnlyHint=true), and there is no output schema, so the description's enumeration of returned fields (id, title, member count) plus the underlying endpoint (GET /api/v1/teams.json) adds genuinely non-redundant context. It says nothing about pagination behavior or ordering, which keeps it from a 5.

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 front-loaded sentence plus an endpoint pointer; every clause earns its place with no filler or repetition of the title.

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 simple paginated read with a 100%-documented schema and readOnly annotation, the description supplies the missing return-shape information and the intended use case. Only the pagination/ordering behavior and the default page size are left unaddressed, a minor gap.

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% — limit and offset each have min/max, defaults, and semantics documented in the schema — so the description is not required to carry parameter meaning. It adds nothing beyond the schema, which is the correct baseline of 3 for a fully documented two-parameter tool.

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 and resource ('List agent teams'), enumerates the returned fields (id, title, member count), and — critically — explains the payoff: these are 'the ids for assigned_team_id'. That distinguishes it from credential/case/user listing siblings without opening a schema.

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 'ids for assigned_team_id' note tells the agent exactly when this tool is the right one (resolving a team id for assignment). No explicit exclusions or named alternatives are offered, so it stops short of a 5.

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