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

Annotations already declare readOnlyHint=true, idempotentHint=true, and openWorldHint=true, so the safety and determinism profile is covered. The description does not clarify the one thing an agent would most worry about given the 'on Base L2' phrasing — that no announcement is actually broadcast and nothing is written on-chain, only formatted. That clarification would have added real value beyond the annotations.

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?

A single front-loaded sentence with no filler, and the key nouns (commitment, ERC-5564, stealth announcement, Base L2) appear early. It is dense with protocol jargon but every clause carries 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?

An output schema exists and annotations cover safety and idempotency, so the description does not need to explain return values. What is missing is workflow context: when in the invoice lifecycle to invoke it and whether the announcement is merely serialized or transmitted, which matters for a tool that touches a public chain's namespace.

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%, with all five parameters individually documented including optionality and the fallback behavior for salt_hex. The description adds no parameter-level meaning beyond what the schema already states, 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?

The description names specific verbs and resources ('generates cryptographic commitments', 'formats ERC-5564 dual-key stealth address announcements') and pins the domain to invoice-scale B2B payments on Base L2, which an agent can match against sibling tools like create_b2b_invoice or receipt_verify. It is clear what the tool produces, though it bundles two outputs (commitment + announcement) without saying whether they are returned together or are independent.

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?

There is no guidance on when to call this versus create_b2b_invoice, receipt_verify, or iso20022_to_x402_intent, all of which sit in the same payment-workflow cluster. Nothing states prerequisites, whether the invoice must be finalized first, or what the caller does with the resulting commitment.

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