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qinisolabs

companieswise

Official

search_company

Find a UK company's number by searching its registered name. Returns matching companies from the Companies House snapshot.

Instructions

USE THIS to find a UK company's number from its name (reverse lookup) instead of guessing the number — returns companies whose official registered name contains all your search words, from the Companies House snapshot.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
queryYesCompany name or keywords to search for.
limitNoMax results (default 20).
Behavior4/5

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

No annotations provided, so description carries full burden. It discloses the use of a Companies House snapshot (not live data) and the matching logic (contains all search words). This adds useful behavioral context, though it could mention what happens if no matches or rate limits.

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?

The description is a single, dense sentence that is front-loaded with 'USE THIS' and efficiently conveys all essential information without unnecessary words.

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?

Given the tool's simplicity (2 parameters, no output schema, no annotations), the description covers the purpose, matching logic, and data source adequately. It could mention return format or error handling, but overall it provides sufficient context for selection and invocation.

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

Parameters4/5

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

Schema coverage is 100% with descriptions for both parameters. The description adds meaning beyond the schema by explaining the reverse lookup purpose, the data source, and the matching logic, which enhances understanding of the query parameter.

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 it finds a UK company's number from its name (reverse lookup) and specifies it returns companies whose official registered name contains all search words. It effectively distinguishes from siblings by providing a specific use case.

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 explicitly tells when to use this tool (reverse lookup instead of guessing), providing clear context. However, it does not provide explicit exclusions or guidance on when to use sibling tools like lookup_company or validate_company_number.

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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