extend_order

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

The description clarifies that 'expiry_hours is the new total', implying it overrides the previous expiry rather than adding to it. However, it does not disclose if the order must be active or any authorization requirements.

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 description is a single sentence, which is concise but could be better structured by front-loading the purpose and separating parameter details. It lacks a clear hierarchy.

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 three required parameters and no output schema, the description is minimal. It does not explain the return value, side effects, or whether the extension is conditional on order state.

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?

With 0% schema coverage, the description adds meaning only for the expiry_hours parameter (new total). It provides no semantic help for wallet_address or order_id, leaving those unexplained.

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 verb 'Extend' combined with 'an order's expiry' clearly indicates the action and resource. It naturally distinguishes from siblings like cancel_order or place_limit_order by focusing on extending the expiry.

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?

No guidance is provided on when to use this tool versus alternatives (e.g., placing a new order with a longer expiry). There is no mention of prerequisites or scenarios where extension is applicable.

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