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

Annotations already declare readOnly, idempotent, and non-destructive, so the safety profile is covered. The description adds genuine value by disclosing what each mode returns (status list vs. findings, remediation, measured outcome), but omits pagination/ordering behavior despite the limit and cursor parameters.

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 tight sentences with no filler; the primary purpose is front-loaded and the mode switch is stated immediately after. Every clause carries information.

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 carries the return-value burden and partially meets it by naming the payload of the single-Action mode. It is incomplete on the list mode's pagination and filtering semantics, which an agent needs to call it correctly.

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 20% (only cursor is documented), so the description must compensate. It does explain action_id's effect, but says nothing about the status enum filter, the limit ceiling of 200, or whether project_id scopes the list, leaving most parameters unexplained.

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 ('read' + 'prioritized Actions to improve visibility') and clarifies the two modes (list vs. single via action_id). It is distinguishable from the write-side sibling update_action_status, though it does not name or contrast with any specific sibling.

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?

It tells the agent that passing action_id returns a single detailed Action, which is implied usage guidance for that branch. However, there is no guidance on when to use the list form versus the single form, when to filter by status, or how pagination via cursor/limit should be driven.

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