act_on_vr_approval

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

Goes well beyond the annotations by disclosing downstream effects: advancing the attached workflow and transitioning the underlying VR record, plus the rejection-requires-comment rule and the WRITE_ENABLED=true gate. It does not state whether a completed approval is reversible or what happens if the workflow is already advanced, which is notable given idempotentHint=false.

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 sentences plus a bracketed prerequisite note; the action, the object, the side effect, and the rejection constraint are all front-loaded with no filler.

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 3-parameter mutation with full schema coverage and no output schema, this covers the essentials: valid target record, observable side effects, and the write-enable prerequisite. Missing only failure-mode behavior (invalid/already-resolved sys_id, workflow state conflicts).

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%, so the schema already explains sys_id, the action enum, and that comments are required on reject. The description restates the rejection/comment rule without adding format, length, or example guidance, so 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 pair (approve/reject) and a precisely scoped resource (Vulnerability Response approval, sysapproval_approver) keyed by sys_id. This clearly separates it from the generic approve_request/reject_request and the read-only list_vr_approvals 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?

Scope is implied by naming the VR approver table, so an agent can infer this is the VR-specific alternative to generic approval tools, but no sibling is named and there is no explicit when-not guidance. The WRITE_ENABLED prerequisite is a useful gate but is framed as a caveat, not a usage condition.

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