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

With no annotations, the description carries the full burden and does well: it discloses the internal orchestration (five sub-checks on the sections supplied), a critical safety guarantee ('never overrides a failed check'), and precise billing behavior including price, credit/x402 payment, and the first-memo-free exception. It leaves gaps around what happens when no section objects are supplied (all six params are optional) and around latency/output delivery.

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?

Front-loaded with purpose and outcome, then orchestration, then the safety constraint, then pricing — a sensible order. The pricing sentence is dense and repeats 'paid only' twice, a minor redundancy, but nearly every clause carries information an agent needs.

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?

For a six-parameter, nested-object, no-output-schema tool with zero annotations, the description covers what it does, what it returns (a memo with risks, exact changes, applicable rules, dated audit note), and the payment model. The notable omission is guidance for the all-optional case — an agent cannot tell whether calling with no sections is valid.

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%, so the baseline is 3. The description adds a little beyond the schema by explaining that checks run 'on whichever sections you send', clarifying that the section objects are optional and selectively executed, but it gives no additional detail on the nested request shapes beyond pointing at the sibling tool names.

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 and resource — send a trade/options/portfolio, get a written decision memo — and enumerates the three possible verdicts (proceed, proceed with changes, do not proceed) plus the memo's contents. It also names the sibling checks it composes (pre_trade_check, position_size, tax_lot_plan, options_risk_check, portfolio_review), so an agent can tell this aggregator apart from the individual check tools.

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?

Makes clear this is the tool for a consolidated written decision covering whichever sections you send, implicitly routing single-check needs to the named siblings. It also surfaces the cost gate (paid only, first memo per API key free, daily free calls and anonymous trial excluded), which is decision-relevant usage context. It stops short of an explicit 'use X instead when you only need Y' statement.

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