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UK Police Forces

gov.ukpolice.forces
Read-onlyIdempotent

Retrieve the complete list of 43 police forces in England and Wales, enabling drill-down into force-specific data and statistics.

Instructions

List the 43 UK police forces (id + name) for England and Wales. Used to drill down into per-force statistics. OGL v3.0

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
refreshNoSet to true to bypass cache and re-fetch the list of 43 UK police forces.

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultNoTool response payload. Shape varies per tool — consult the tool description and inputSchema. May be an object, array, string, or number depending on the upstream provider response.
errorNoPresent only when the call failed. Includes error code, message, request_id, and any provider-specific extras.
Behavior4/5

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

Annotations already declare readOnlyHint=true and idempotentHint=true. The description adds useful context: it covers only England and Wales, returns id and name, and is under OGL v3.0. This supplements the annotations without contradiction.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Two concise sentences with no unnecessary words. First sentence states the action and result, second provides usage context, third notes the license. Highly efficient.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

The description covers purpose, scope (England and Wales), output (id+name), and usage context. It omits details like sorting or frequency of the list, but for a simple listing tool with output schema present, it is adequately complete.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100% with one parameter 'refresh' fully described in the schema. The description does not repeat parameter details, so it adds marginal value beyond the schema, consistent with baseline 3.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool lists the 43 UK police forces for England and Wales, providing id and name. It specifies the exact resource and output, distinguishing it from sibling tools like crimes_near and outcomes.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description indicates the tool is used to drill down into per-force statistics, implying it should be used first to get force IDs. It provides clear context but lacks explicit when-not-to-use or alternative tools.

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

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