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

No annotations are provided, so the description carries full burden. It states the tool submits a UserOperation, implying an on-chain transaction, but does not disclose side effects (e.g., gas costs, asynchronous nature, requirement for prior approvals, or what happens to receipt tokens). The behavioral impact is under-communicated.

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 that efficiently conveys the core action. It is not verbose, but could have included slightly more context (e.g., what the return value is) without becoming wordy. Structured well with no extraneous information.

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 the description does not explain the return value (likely a transaction hash or userOp hash). Lacks information on required preconditions, such as needing a smart wallet or having staked tokens. For a 3-parameter tool with simple purpose, the description is incomplete in providing operational context.

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 100%, and the schema already defines parameters clearly (e.g., 'Amount to unstake, in base units'). The description adds no additional meaning beyond what the schema provides, meeting the baseline for high coverage.

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 action ('submits an ERC-4337 UserOperation that unstakes a token') and differentiates from siblings like fuse_smart_stake_token. It specifies the mechanism ('via Fuse's staking module') and uses a specific verb+resource combination.

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 on when to use this tool versus alternatives, such as fuse_smart_stake_token or other staking operations. No prerequisites or conditions (e.g., need to have staked tokens, being the smart account owner) are mentioned. The description assumes the agent knows the context.

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