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

Annotations already declare readOnlyHint=true, destructiveHint=false, and openWorldHint=false, so safety is covered. The description usefully adds non-annotation behavior: the call is paid ($300 USDC on Base via x402) and invoking it returns a payment challenge rather than results. However it says nothing about what the audit returns, runtime cost, or side effects beyond the paywall.

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 opening sentence is duplicated verbatim, wasting roughly a third of the description. The remainder mixes payment information with a truncated JSON example that cuts off mid-object, harming scannability and front-loading.

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, so the description carries the burden of explaining what an audit returns, yet it never does. For a composite, paid operation that subsumes 17 sibling gates, the description omits the result shape, the effect of the payment challenge, and how it relates to the individual gate tools, leaving the agent materially under-informed.

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%, and both parameters (bars, signals) carry descriptions, so the schema does the heavy lifting and baseline is 3. The description only repeats a truncated request example already present in the schema's examples, adding no new meaning about parameter format or constraints.

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 conveys scope (a full-book run of every gate in order, plus a cross-instrument dedup check) but does so in metaphorical language rather than a clear verb+resource statement. It implicitly distinguishes itself from siblings like drawdown or multipletest as the 'everything composed' variant, but never states that contrast explicitly. An agent can roughly infer 'run all checks over the whole book' but must guess at the concrete operation.

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 only usage instruction is 'Call it to receive the payment challenge,' which is about payment mechanics, not when to chose this tool over the many sibling gates. There is no guidance on when a full audit is preferable to calling individual checks such as deflatedsharpe or multipletest, nor any prerequisites or exclusions.

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