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

With no annotations, the description carries full burden: it does disclose that this is an onchain write, that Pabandi pays gas (useful cost/account model), and what is returned (agentId + tx hash). It leaves out idempotency (what happens if already registered), required auth/permissions, and irreversibility of the onchain write.

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?

Four short sentences, front-loaded with the action and standard, then benefits, return values and cost. The 'verifiable across the ecosystem' clause is mildly promotional but still conveys portability, so waste is minimal.

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?

There is no output schema, and the description does compensate by naming the returned agentId and tx hash. However, for a one-parameter mutation with zero annotations, the description omits error/duplicate-registration behavior and permission requirements, leaving the agent under-informed about failure modes.

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?

Single parameter with 100% schema description coverage, so the schema already explains passportId. The description adds no format, source (obtained from issue_passport?) or validity detail beyond the schema, so the 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?

States a specific verb+resource (register an agent's identity onchain) and names the underlying standard (ERC-8004), which an agent can use to distinguish it from generic identity siblings. It does not, however, explicitly contrast with pabandi_issue_passport or pabandi_identity_reputation_sync, so the agent must infer the boundary.

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 requirement of a passportId and the 'portable identity verified across the ecosystem' framing imply this is a post-passport step, but the description never states when to call it versus issue_passport, verify_passport or identity_reputation_sync. No explicit exclusions, prerequisites or re-registration caveats are given.

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