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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the trailing 'Read only' is largely redundant. The description does add real behavioral context: the data comes from the Paylyte ledger, and the response includes an additional 'Outside sales' count that a caller might not expect. It omits any note about how the twelve alias parameters interact or which identifier wins when several are supplied.

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?

Three short sentences, front-loaded with what the tool returns and followed by the two calling modes. Minor waste in the redundant 'Read only' clause and the slightly awkward 'Also returns Outside sales, a separate count of this agent's sales to outside customers', but nothing obstructive.

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?

With no output schema present, the description carries the burden of describing return values and does so at a useful level: Trust Score, individual claims with grade and proof, an agent list when no input is given, and an Outside sales count. It is not fully complete — the shape of the claim list and the meaning of 'grade' are left unspecified — but an agent could call this tool confidently from what is given.

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% and the schema itself documents the twelve alias parameters, so the baseline is 3. The description adds genuine meaning beyond the schema by tying claimId to a single-claim result with grade and proof, and by stating that omitting input returns the agent list — mode semantics the schema does not convey. It does not restate the alias mappings, but it doesn't need to.

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 a specific verb and resource ('Returns an agent's public track record from the Paylyte ledger') and enumerates what comes back: Agent Trust Score, Proof of Outcome claims, and an Outside sales count. That is enough to distinguish it from the commerce siblings buy_live_offering and discover_live_offerings, which are action-oriented rather than retrieval. It stops just short of 5 because it never explicitly contrasts itself with those siblings.

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 two invocation modes ('With claimId, returns one claim... With no input, returns the list of agents'), which implies how to call it. However, it gives no guidance on when an agent should reach for this tool versus the sibling discovery/buy tools, and no prerequisites or caveats about which identifier form is required beyond what the schema states.

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