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

This is unusually transparent beyond the annotations: it states that the tool will avoid invented financial results, uses buyer-supplied information only, performs no external research or outbound actions, returns a draft for human review, costs 0.25 USD, and requires explicit wallet authorization. This complements the destructiveHint and readOnlyHint flags by explaining the real side effect (payment) and the human-review safeguard.

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 description is tightly packed with no filler: purpose, constraints, output nature, price, and payment guardrail each earn their place in short, readable sentences. The core function is front-loaded, and the operational caveats are stated efficiently.

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?

The description is complete enough for an agent to decide whether to call the tool and to understand the key constraints and cost. However, with no output schema and five parameters at 0% schema description coverage, the non-obvious expiration, idempotency, and signature fields remain unexplained, and the return structure is only described generically as 'a draft for human review'.

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 0%, and the description only loosely gestures at the input via 'buyer-supplied information' and at payment via 'wallet authorization'. It does not explain result_expires, idempotency_key, result_signature, payment_signature, or how audience maps to the input object, so an agent receives little parameter-level guidance beyond the raw schema.

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 opens with a specific verb and resource: 'Structure supplied business assumptions into a plan' and lists concrete deliverables (evidence gaps, experiments, milestones). It clearly identifies what the tool produces, though it does not explicitly contrast it with sibling planning tools such as launch_plan or project_plan.

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 gives clear context for when to use the tool: when a buyer has supplied business assumptions and source material for a business plan. It also states a meaningful when-not condition by saying there is no external research or outbound actions, so an agent should not reach for this tool when research is required. It does not name alternative sibling tools, which keeps it from a top score.

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