identity_set_approval

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

With no annotations, the description carries the behavioral burden and discloses the permission model, wallet state requirement, and what approved operators can do. It could say more about revocation effects or transaction-cost behavior, but it covers the key mutation and authorization context.

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 core purpose and authorization requirements are front-loaded and easy to scan. The trailing tip about earning_opportunities is unrelated to invoking this tool and slightly reduces focus, but the description remains compact.

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 no annotations and no output schema, the description supplies the essential permission and wallet prerequisites and explains the operator effect. Fee and sponsorship details are handled by the schema, though a bit more context on revocation behavior could improve completeness.

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%, so the schema already documents all five parameters including fee, approved, and sponsored. The description mentions the operator and agent concept but adds little syntax, default, or enum meaning beyond the schema, so baseline 3 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?

It states a specific verb pair, resource, and domain: approve or revoke an operator in the ERC-8004 identity registry. It also distinguishes the tool from sibling identity setters by explaining that this is about delegated operator permissions rather than direct URI, metadata, or wallet updates.

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 gives clear prerequisites: only the NFT owner can call it and an unlocked wallet is required. It does not explicitly route to alternatives such as identity_transfer or identity_set_wallet, but the intended use case is clear.

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