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

Annotations already declare readOnlyHint=false, destructiveHint=false, idempotentHint=true and openWorldHint=true, so the safety profile is covered. The description adds the precondition that only not-yet-approved proposals can be withdrawn, but says nothing about failure modes, required authorization, or whether the withdrawn proposal is recoverable.

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?

A single front-loaded sentence with no filler; the state constraint is attached directly to the action rather than buried. Nothing in it is redundant.

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 one-parameter, non-destructive, idempotent mutation with no output schema, the description is close to sufficient. The remaining gap is what an agent should expect on a rejected cancel (already approved/unknown id), which a brief clause would have closed.

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?

Only one parameter, and the schema documents it at 100% coverage with a description of its own. The tool description adds no format, sourcing, or lookup guidance for proposal_id, 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+resource ("Withdraw a live proposal") plus a state qualifier ("still waiting for the person's approval"), which separates it from get_live_proposal, list_live_proposals and propose_live_order. It never names the sibling tools explicitly, so differentiation is inferred rather than stated.

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 pending-approval qualifier implies when the tool applies, which is more than most one-liners. It gives no exclusion (e.g., what to do if the proposal is already approved, expired, or executed) and points to no alternative tool for those cases.

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