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rejestr-io-mcp

by QuverLabs

search_organizations

Need to locate a Polish company? Search the KRS register by name, NIP, REGON, legal form, PKD code, status, or address to retrieve matching organizations.

Instructions

Search organizations in the Polish National Court Register (KRS) by name, registry numbers, legal form, PKD codes, status flags, address, and pagination.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
nipNoFull NIP number, without dashes.
cityNoCity in the organization's or branch's address.
nameNoFragment of the organization name to search for (substring match).
pageNoPage number of results, starting at 1. Default: 1.
sizeNoOrganization size classification per the Polish Accounting Act: one of 'large_medium', 'small', 'micro', 'ngo'.
regonNoFull REGON number.
streetNoStreet in the organization's or branch's address.
countryNoCountry in the organization's or branch's address.
sort_byNoSort order for results. Default (if unset): sorted by text match to 'name' when given (tie-broken by higher share capital), otherwise by descending KRS number.
page_sizeNoNumber of results per page. Default: 10.
legal_formNoFull legal form, in uppercase, as recorded in KRS.
postal_codeNoPostal code in the organization's or branch's address.
terc_countyNoFour-digit TERC code of the county (powiat).
address_typeNoWhich address to match against: one of 'any' (default), 'organization', 'branch'.
any_pkd_codeNoPKD code matching either the primary or a secondary business activity.
house_numberNoHouse/building number in the organization's or branch's address.
is_suspendedNoWhether the organization's business activity is suspended.
share_capitalNoShare capital amount.
terc_provinceNoTwo-digit TERC code of the voivodeship (province).
is_deregisteredNoWhether the organization has been deregistered (wykreślona) from KRS.
first_entry_dateNoDate of the organization's first KRS entry. Format: YYYY-MM-DD.
is_in_bankruptcyNoWhether the organization is in bankruptcy proceedings.
primary_pkd_codeNoPKD code of the organization's primary (przeważający) business activity.
is_in_liquidationNoWhether the organization is in liquidation.
latest_entry_dateNoDate of the organization's most recent KRS entry. Format: YYYY-MM-DD.
terc_municipalityNoSix-digit TERC code of the municipality (gmina).
secondary_pkd_codeNoPKD code of a secondary business activity.
is_public_benefit_orgNoWhether the organization has public benefit organization (OPP) status.

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections. Dates show when Glama detected each change.

  1. First observedv0.1.0

TDQS

A3.6/5.0
Behavior3/5

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. The verb 'Search' implies a read-only operation, and the enumerated dimensions convey what can be filtered, but the description adds no behavioral context beyond that — no mention of how filters combine, result limits, or pagination behavior. Adequate but with clear gaps.

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?

A single tightly packed sentence with zero waste. The verb and resource are front-loaded, followed by an efficient enumeration of search dimensions. Every word earns its place, and the sentence is appropriately sized for the tool's scope.

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

Completeness2/5

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

For a tool with 28 optional parameters, no annotations, and rich filter semantics (TERC codes, address types, status flags, sort behavior), a one-line description is thin. The output schema covers return values, but the description does not disclose how multiple filters interact, whether an empty query returns the entire register, or any caveats about the search. This is a clear completeness gap for such a complex tool.

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 description coverage is 100%, so the schema fully documents all 28 parameters with defaults and formats; the baseline of 3 applies. The description adds marginal organizational value by grouping parameters into semantic categories (registry numbers, PKD codes, status flags, address), but it does not explain any parameter semantics beyond what the schema already provides.

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 uses a specific verb ('Search'), names a precise resource (organizations in the Polish National Court Register), and enumerates concrete search dimensions (name, registry numbers, legal form, PKD codes, status flags, address, pagination). It is immediately distinguishable from its siblings, which are all 'get_*' lookups by exact identifier.

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

Usage Guidelines3/5

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

The usage context is implied: this is clearly the criteria-based search tool among siblings that fetch specific organizations or persons by ID. However, the description never explicitly states when to prefer this tool over get_organization (e.g., 'use this when you don't know the KRS number'), nor does it name any alternative or exclusion condition.

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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