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

Annotations already declare destructiveHint=true and idempotentHint=true, so the safety profile is covered. The description goes beyond them by disclosing the state precondition and the failure/redirect path for approved records, which is genuine operational context an agent needs before calling.

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, zero filler, with the destructive action and its precondition front-loaded. Every clause earns its place by either defining scope or preventing a misuse.

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 destructive tool with annotations covering mutability and idempotency and no output schema, the description supplies the essentials: scope, precondition, and the out-of-scope redirect. It stops short of saying what a withdrawn proposal returns or whether the id remains queryable, but that is a minor omission.

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?

There is a single parameter with 100% schema description coverage ('UUID of the pending proposal to withdraw'), so the schema already carries the semantics. The prose adds no format or sourcing detail beyond what the schema states, which matches the baseline for high-coverage schemas.

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?

The description uses a specific verb pair ('Withdraw (delete)') against a specific resource ('PENDING manual correction proposal') and adds a state qualifier ('that has not been approved yet'). An agent can distinguish this from propose-manual-adjustment or update-manual-adjustment, though it never names those siblings explicitly.

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 states both the applicability condition (pending, unapproved) and the exclusion with a redirect ('Approved bookings must be deleted in the app'), which is a clear when-not rule. The only gap is that no MCP sibling tool is named as the alternative path for the approved case.

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