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emilpinski

mcp-polish-data

by emilpinski

ceidg_search_business

Search for Polish sole proprietorships (jednoosobowa działalność gospodarcza) in the CEIDG registry using name, NIP, REGON, or surname. Required for queries about freelancers or sole traders; for companies, use krs_search_company.

Instructions

Szukaj przedsiębiorcy (jednoosobowej działalności gospodarczej) w CEIDG.

Użyj gdy użytkownik pyta o JDG, freelancera, osobę fizyczną prowadzącą działalność gospodarczą. Dla spółek użyj krs_search_company.

Wymaga co najmniej jednego z: name, nip, regon, surname.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
nameNonazwa firmy
nipNonumer NIP (10 cyfr)
regonNonumer REGON (9 lub 14 cyfr)
surnameNonazwisko przedsiębiorcy
max_itemsNomaksymalna liczba wyników

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior3/5

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

No annotations provided, so description carries burden. It mentions requirements but does not disclose behavioral traits like auth, rate limits, or what happens with invalid input. However, it does specify the tool is for searching and expects at least one parameter, which is basic behavioral info.

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

Conciseness4/5

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

Description is concise with three sections, but the first line is in Polish while sibling tools are in English. Could be shorter by removing repetition, but it's well-structured and front-loaded.

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

Completeness5/5

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

Given the tool's complexity (5 params, simple search), no output schema needed since search results are standard. Description covers purpose, usage, requirements, and sibling distinction, making it complete.

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%, so baseline is 3. The description adds value by stating that at least one of the four core parameters is required, which is not in schema. It also groups name, nip, regon, surname as the required ones, enhancing parameter semantics.

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 searches for sole proprietorships in CEIDG, using specific verbs 'Szukaj' and specifying the resource 'przedsiębiorcy (jednoosobowej działalności gospodarczej)'. It also distinguishes from sibling tool krs_search_company, which is for companies.

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

Usage Guidelines5/5

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 (JDG, freelancer) and when not (spółki, use krs_search_company). It also specifies required parameters: at least one of name, nip, regon, surname.

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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