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

With no annotations, the description carries the full burden and does disclose that this is a paid operation returning a Stripe Checkout URL from data.police.uk. However, it does not explain whether calling it charges the user, what auth is needed, what happens after checkout, or what 'Soft-Offer outbound is OFF' means.

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 four short sentences and front-loads the paid nature and return value. The final sentence ('Soft-Offer outbound is OFF') is cryptic and does not earn its place as clearly as the others.

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 payment-initiating tool with no annotations and no output schema, the definition omits critical context: auth requirements, whether the checkout URL is the only return value, what 'size' controls, and how it relates to redeem_pack. It is too incomplete for an agent to invoke confidently without guessing.

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%, so the description must compensate. It only implies that 'postcode' is the location for crime data; it gives no format or validation rules, and the 'size' parameter is completely unmentioned.

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 states a concrete outcome: it returns a Stripe Checkout URL for a paid pack of street-level crime data near a postcode. The phrase 'Paid pack' distinguishes it from the likely free sibling crime_discover, though the word 'pack' itself remains vague.

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?

It signals that this is the paid path ('Paid pack', price £0.49) but never says when to use it instead of crime_discover or redeem_pack. No prerequisites, exclusions, or follow-up steps are given.

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