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

No annotations provided, so description carries full burden. It mentions atomicity but does not disclose failure modes, error conditions, authorization requirements, or expected side effects beyond the basic operation.

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?

Single 15-word sentence, front-loaded with verb and resource. Every word contributes meaning.

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?

No output schema exists, yet description does not hint at return value (likely a transaction hash or user operation hash). Also missing expected gas or revert behavior, though operation is well-known.

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 coverage is high (80%), so baseline is 3. The description does not add parameter-level detail beyond the schema; it only reiterates the composite action.

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?

Description clearly states the tool atomically approves a token and calls the spender, which is a distinct composite operation. It differentiates from siblings like fuse_smart_approve_token and fuse_smart_call_contract by combining both steps.

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?

Provides context ('Common DeFi pattern') implying use cases like swaps or staking. However, it does not explicitly mention when to avoid this tool (e.g., if atomicity is not required) or alternatives like using separate approve and call tools.

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