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

With no annotations, the description carries the full behavioral burden. It usefully discloses that fulfillment runs as a side effect, but says nothing about irreversibility, permissions, failure modes, or what 'expired' approval implies.

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 tight sentence with the action and its consequence front-loaded and no wasted words. Brevity here is appropriate for a simple two-identifier operation.

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 low-complexity mutation tool with no output schema, the description covers the state precondition and side effect but leaves both parameters and any permission/irreversibility details unexplained, so it is only minimally complete.

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 the description never mentions product_id or deposit_id, so it adds no meaning beyond the bare parameter names. Two required identifiers are left for the agent to interpret unaided.

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 'approve' with the resource 'deposit' and adds the fulfillment side effect. It is easily distinguished from the obvious sibling reject_deposit, though it never names an alternative 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?

The phrase 'pending/expired deposit' implies a precondition that guides when the tool applies, but no explicit when-to-use guidance or named alternative (e.g., reject_deposit, resend_deposit_fulfillment) is provided.

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