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

Annotations already cover the safety profile (readOnly, idempotent, non-destructive, closed-world), and the description adds genuinely new behavioral context: one address per owner, the address is knowable before it is created, and payments are swept into bUSDG to the owner's wallet so funds earn. It does not discuss pagination or error cases, but for a lookup tool this is solid added value.

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 lead clause correctly front-loads the resource, but the body is one long heavily parenthesized sentence bundling payment mechanics, return values, and parameter usage, which makes it slow to parse. Information is dense rather than padded, yet the structure could be split for faster scanning.

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 compensates by enumerating the returned fields: the address, whether it is made, pending USDG, the owner's bUSDG and its worth, and x402 fields to use. Combined with the low-parameter schema and annotations, an agent has enough to call it correctly, missing only explicit routing to siblings.

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 coverage is 100%, with both wallet and address documented in the schema itself. The description restates the same mapping (wallet = owner, address = receiving address to find its owner) and hints that the two are alternatives ('or'), but adds no format or precedence detail 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?

States a concrete resource and its role: a seller's receiving address on Borro that receives USDG swept into the bUSDG vault, plus the modeled fields it returns. An agent can tell it is the read/inspect counterpart to payto_open/payto_sweep/payto_withdraw from the 'whether it is made' phrasing, 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?

The description explains what the address is FOR (payTo in x402 offers, channel receiver, hold payee) and how to invoke it ('Pass wallet (the owner), or address ... to find its owner'), but never states when to call this tool versus payto_open or payto_status-style siblings, nor any exclusion.

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