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

Beyond the annotations (idempotent=true, destructive=false, openWorld=true), the description discloses a real side effect: the previously accepted agreement is restored. It also adds the 72-hour expiry rule and that any maker may reject proposals. It does not contradict any annotation.

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 the core action front-loaded, no filler. The second sentence's proposal-expiry clause is slightly tangential to the cancel action but still relevant context.

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 mutation tool with no output schema, the description conveys the main state transition and expiry behavior but omits any parameter guidance, which is the biggest gap for actually invoking it correctly. Annotations carry the safety profile, so this is adequate but incomplete.

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 0% and none of the three parameters (agent_key, project_id, request_id) are explained in the description. The text mentions amendments and agreements but never maps them to the required request_id or project_id, leaving the agent to guess how to identify the amendment to cancel.

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 (Withdraw) and resource (unaccepted amendment), plus the resulting effect (restore the previously accepted agreement). An agent can tell this reverses an amendment rather than creating one, though it never explicitly names the sibling speedbot_product_amend as its counterpart.

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 predicate 'unaccepted amendment' implies the precondition for use, and the 72-hour expiry is offered as context. But it never states when to use this versus a sibling like product_amend or product_accept, nor what to do when the amendment has already been accepted.

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