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

Beyond the annotations, the description clearly discloses side effects: it stamps registered only on success, otherwise returns the wallet's current stored status with verified: false and stamps nothing. This meaningfully exceeds what readOnlyHint/idempotentHint alone communicate.

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 efficient, front-loads the core action and keeps the important success/failure behavior in a compact final sentence. Some jargon like "poll half of the handshake" adds context, though it is slightly cryptic without sibling knowledge.

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 handshake-related tool with an output schema, the description covers the main success and failure behavior and tells the agent exactly when this is the only call needed. The main gap is that it does not describe what the agent should do for cases where the owner did not both sign and submit the transaction.

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%, so the description must compensate for missing parameter docs. It implies that wallet_address is the owner wallet and that identity_pda relates to the on-chain AgentIdentity account, but it never explicitly maps these concepts to parameters and does not address caller_id at all.

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?

The description opens with a specific verb and object: "Complete (or re-check) an owner wallet's AgentIdentity binding from chain." It further distinguishes itself as "the poll half of the handshake" versus the submit/request siblings, so an agent can tell its role apart from related tools.

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 context: it is the only call needed when the owner already signed and submitted the register_identity transaction themselves. It references submit_agnta_identity_registration for comparison, but it does not explicitly say when not to use this tool or name the request-side alternative.

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