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

Annotations already declare destructiveHint=true, idempotentHint=true and readOnlyHint=false, but the description adds substantive context they don't carry: approve takes effect from the next campaign generated (not retroactively), and dismiss is permanent ('will not be proposed again'). It does not restate the safety profile, which is the right call, though it could be more explicit that a dismissal cannot be undone.

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 action and its outcome, then the human-approval precondition. No filler and nothing an agent needs is buried.

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 covers the outcome of both branches and the required precondition, which is sufficient for a 3-required-parameter decision tool. The only minor gap is not stating what the call returns or how to confirm which proposal was resolved.

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 the enum values of decision and the provenance of brandId/proposalId are already documented in the schema. The description's timing note about 'the next campaign generated' adds marginal meaning but does not go beyond the schema's own enum descriptions in any material way.

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 decision verb (approve/dismiss) acting on a precisely scoped resource — one proposed knowledge-brief line — and names the sibling list_knowledge_proposals as the source of the proposalId. It is clearly distinguishable from the other approve_* siblings, which act on guides, copy, posts and strategy.

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?

Gives an explicit precondition: only call it once the owner has said yes or no to that specific line, making clear this is a human-gated decision rather than an autonomous action. It also points to list_knowledge_proposals as the required upstream step to obtain the id.

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