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

Annotations already declare this is a non-readonly, non-idempotent, non-destructive, closed-world write. The description adds real value beyond that by saying the result is an unsigned, content-addressed, order-independent attestation — a materially different behavior from a signed on-chain write. However, it does not say what is persisted, what authorization or proof is required, or whether repeated calls create duplicate state.

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?

Two tight sentences, front-loaded with the action and followed by the artifact it produces. No filler or redundancy.

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?

An output schema exists, so return values need not be described, and annotations cover the safety profile. Still, for a four-parameter write operation with zero schema documentation, the description leaves the parameter contract and any prerequisites unexplained.

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% across four parameters, so the description must compensate and largely does not. 'fleet DID' and 'ERC-8004 identity' loosely map to fleet_did and the chain_id/token_id pair, but there is no explanation of the integer identifiers or of the optional proof_note.

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 and two concrete resources: it binds a fleet DID to an ERC-8004 identity. The mention of producing a 'binding attestation' implicitly separates it from siblings like verify_attestation and export_attestation, though no sibling is named 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?

No when-to-use guidance, no preconditions (e.g. proof of DID control), and no pointer to alternatives such as verify_attestation or import_registration. The agent must infer all routing from the name and description alone.

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