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

With no annotations, the description carries the behavioral burden and does provide useful facts: the operation is unsigned, it clears the declared job vehicle, and it involves no ZENI or ETH. However, it does not explain the state effect of clearing, whether a declaration is required, or what else the agent should expect.

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?

The definition is a single compact sentence with no wasted text, and the undo relationship is front-loaded. The grammar is somewhat telegraphic, which slightly reduces clarity.

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?

The schema covers the sole wallet parameter well and the description covers the main action and undo relationship. Still, with no annotations and no output schema, the definition leaves notable gaps around prerequisites and the exact effect of clearing the declared vehicle.

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 one parameter, and schema description coverage is 100%; the schema already explains that the wallet is only read/simulated against and nothing is sent from it. The description adds no parameter-specific guidance beyond that, so the schema baseline 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?

The description states a specific action (clearing the declared job vehicle), marks it as unsigned, and names the sibling operation it undoes (prepare_vehicle_bring). It is not merely a restatement of the name, though the phrasing is compressed and does not directly use the tool-name verb 'drop'.

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 description implies usage by identifying this as the undo path for prepare_vehicle_bring. It does not explicitly state when to use this versus other vehicle-preparation tools or what prerequisites must already exist.

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