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

Annotations already declare read-only, idempotent, non-destructive, open-world behavior, so the safety profile is covered. The description adds value beyond that by naming the lifecycle states an agent should expect and framing the call as a polling primitive for pending approvals. It does not state polling cadence, rate limits, or terminal-state handling, which would have pushed this higher.

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?

Three short sentences, front-loaded with the core verb-and-resource statement before usage context. Every sentence carries information, though 'Essential for...' has a slightly promotional tone that could be tightened.

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?

An output schema exists, so return values needn't be explained, and the description covers the one input's meaning and the async polling motivation. For a single-parameter read tool this is nearly complete; only error/not-found behavior and polling guidance are missing.

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 coverage is 100% and the actionId description already explains it is the UUID returned by actions_enter, actions_exit, or actions_manage. The description only restates 'by its ID' and adds no format constraints or edge cases. Baseline 3 is appropriate when the schema does the heavy lifting.

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: retrieve current status and transactions of a single action, keyed by ID. The status enumeration (CREATED/PROCESSING/SUCCESS/FAILED) makes the resource scope concrete. It does not differentiate from the sibling actions_get_all, so an agent must infer that this is for one action rather than a listing.

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?

Explicitly tells the agent when to use it: polling async execution and semi-autonomous flows where approval takes time. That is a clear usage context. It stops short of naming alternatives (e.g., use actions_get_all to enumerate actions), so exclusion guidance is absent.

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