Polish KYB
REMOTE · COMPABASE.COM
Know-your-business checks for Polish companies: KRS, owners, insolvency, sanctions, gazette notices.
Available components
Last scanned (8 hours ago)
Scores higher than 70% of remote servers
Reachable. Last reached 24 Oct 2026.
Category Finance and Payments
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security74
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability65
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 2572 tokens (~214/item across 12 items; 12 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management47
- Stability observed for 14 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 12 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 13 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 24 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 43 to 47. That category is still filling its 30-day observation window: 13 days of observed history at the previous scan, 14 at this one. The score rises as the window fills, whether or not the server changes.
- 22 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 37 to 40. That category is still filling its 30-day observation window: 11 days of observed history at the previous scan, 12 at this one. The score rises as the window fills, whether or not the server changes.
- 19 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 27 to 30. That category is still filling its 30-day observation window: 8 days of observed history at the previous scan, 9 at this one. The score rises as the window fills, whether or not the server changes.
- 17 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.
- 15 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.
- 13 Oct 26 +1
- “search_companies” reworded the description of “sort_by” cosmetic
1 cosmetic change on this day. Switch on “Show cosmetic changes” to see it.
- 12 Oct 26 +1
- Stability: unverified → 0.07 ▲ functional
- 10 Oct 26 69
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 24 Oct 2026 · Probed https://compabase.com/api/mcp/kyb
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=compabase.com | CN=WE1,O=Google Trust Services,C=US | 10 Sept 2026 | 9 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | 6c4c56ba0f027d00137eb387c2b0e95c |
| SANs: compabase.com, *.compabase.com | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of compabase.com. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| compabase.com. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://compabase.com/api/mcp/kyb | Verified | 200 | |
| http (plaintext) | http://compabase.com/api/mcp/kyb | HTTPS enforced | 308 | https://compabase.com/api/mcp/kyb |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
get_company Get Company Profile ~146
Get the registry profile of one Polish company: name, legal form, address, industry (PKD), share capital, representation rules, recent registry changes, VAT status and headline financials for the latest filed period. Identify the company by name, KRS number or company tax number (NIP). For earlier years or full statements use get_financials.
| Name | Type | Req | Description |
|---|---|---|---|
| krs | string | – | KRS number of the company in the Polish National Court Register (10 digits). |
| name | string | – | Company name, used when the KRS or NIP is not known. |
| nip | string | – | Polish company tax number (NIP) of the business, 10 digits. |
No output schema declared.
No examples provided.
get_company_articles_of_association Get Articles of Association ~159
Get the text of a Polish company's articles of association or statute from the court register document repository. Use for questions about share transfers, pre-emption rights, voting rights, management board powers or company duration. Identify the company by name, KRS number or company tax number (NIP).
| Name | Type | Req | Description |
|---|---|---|---|
| doc_id | string | – | Optional: specific rar_doc_id. Omit for the latest articles / statute. |
| krs | string | – | KRS number of the company in the Polish National Court Register (10 digits). |
| name | string | – | Company name, used when the KRS or NIP is not known. |
| nip | string | – | Polish company tax number (NIP) of the business, 10 digits. |
No output schema declared.
No examples provided.
get_company_beneficiaries Get Ultimate Beneficial Owners (CRBR) ~121
Get CRBR beneficial owners for a KRS company. All names are returned (same as zarząd / wspólnicy). PESEL is never included (birth_year only). JDG are not in CRBR.
| Name | Type | Req | Description |
|---|---|---|---|
| krs | string | – | KRS number of the company in the Polish National Court Register (10 digits). |
| name | string | – | Company name, used when the KRS or NIP is not known. |
| nip | string | – | Polish company tax number (NIP) of the business, 10 digits. |
No output schema declared.
No examples provided.
get_company_court_gazette Get Court and Commercial Gazette (MSiG) ~129
Get notices about a Polish company published in the Court and Commercial Gazette (Monitor Sądowy i Gospodarczy): calls to creditors, liquidation, mergers and transformations. Identify the company by name, KRS number or company tax number (NIP).
| Name | Type | Req | Description |
|---|---|---|---|
| krs | string | – | KRS number of the company in the Polish National Court Register (10 digits). |
| name | string | – | Company name, used when the KRS or NIP is not known. |
| nip | string | – | Polish company tax number (NIP) of the business, 10 digits. |
No output schema declared.
No examples provided.
get_company_debt_registry Get National Debt Register (KRZ) ~114
Get insolvency and restructuring proceedings of a Polish company from the National Debtors Register (KRZ). Identify the company by name, KRS number or company tax number (NIP).
| Name | Type | Req | Description |
|---|---|---|---|
| krs | string | – | KRS number of the company in the Polish National Court Register (10 digits). |
| name | string | – | Company name, used when the KRS or NIP is not known. |
| nip | string | – | Polish company tax number (NIP) of the business, 10 digits. |
No output schema declared.
No examples provided.
get_company_financial_supervision Get KNF Financial Supervision Register ~152
KNF register (Polish Financial Supervision Authority): licences and entries of a financial company — banks, payment / e-money institutions, investment firms, insurers, lending institutions, agents. Returns entries with kind, KNF number, status, registration / decision / strike-off dates and services. Keyed by NIP; null when the company has no KNF entry.
| Name | Type | Req | Description |
|---|---|---|---|
| krs | string | – | KRS number of the company in the Polish National Court Register (10 digits). |
| name | string | – | Company name, used when the KRS or NIP is not known. |
| nip | string | – | Polish company tax number (NIP) of the business, 10 digits. |
No output schema declared.
No examples provided.
get_company_people Get Company People & Management ~152
Get people associated with a company — management board, supervisory board, shareholders, proxies. Returns display names, role labels, and relationship types (management, supervisory, ownership, procuration). Identify by name, KRS, or NIP.
| Name | Type | Req | Description |
|---|---|---|---|
| krs | string | – | KRS number of the company in the Polish National Court Register (10 digits). |
| name | string | – | Company name, used when the KRS or NIP is not known. |
| nip | string | – | Polish company tax number (NIP) of the business, 10 digits. |
| relationship_type | string | – | Filter: management, supervisory (rada nadzorcza), ownership, procuration. Omit for all. |
No output schema declared.
No examples provided.
get_company_sanctions Get sanctions listing (MSWiA) ~128
Official MSWiA sanctions listing for one company. Returns measures and legal grounds when the company is listed; null when it is not. Matched by KRS, NIP, or REGON. The same payload is included on get_company as sanctions.
| Name | Type | Req | Description |
|---|---|---|---|
| krs | string | – | KRS number of the company in the Polish National Court Register (10 digits). |
| name | string | – | Company name, used when the KRS or NIP is not known. |
| nip | string | – | Polish company tax number (NIP) of the business, 10 digits. |
No output schema declared.
No examples provided.
get_company_secured_liabilities Get Secured Liabilities (Mortgages, Pledges) ~147
Secured liabilities from the latest financial-statement notes (period ending 2025+): mortgages (hipoteki), registered / financial pledges (zastawy), transfers of ownership, assignments — with creditor, amount, secured debt, asset and land-register (KW) numbers. Keyed by KRS; null when nothing is disclosed.
| Name | Type | Req | Description |
|---|---|---|---|
| krs | string | – | KRS number of the company in the Polish National Court Register (10 digits). |
| name | string | – | Company name, used when the KRS or NIP is not known. |
| nip | string | – | Polish company tax number (NIP) of the business, 10 digits. |
No output schema declared.
No examples provided.
get_company_stock_market Get Warsaw Stock Exchange Data (GPW) ~185
Get Warsaw Stock Exchange listing for a company — ticker, ISIN, market (GPW main / NewConnect / GlobalConnect), last close and change, market cap, shares outstanding, TTM EPS, TTM P/E (falls back to last annual filing), last quarterly results, next earnings date, dividend per share and yield. Quotes delayed ~15 minutes, in PLN. Snapshot plus a few recent daily bars — not full OHLCV history. Keyed by NIP. Identify company by name, KRS, or NIP.
| Name | Type | Req | Description |
|---|---|---|---|
| krs | string | – | KRS number of the company in the Polish National Court Register (10 digits). |
| name | string | – | Company name, used when the KRS or NIP is not known. |
| nip | string | – | Polish company tax number (NIP) of the business, 10 digits. |
No output schema declared.
No examples provided.
get_usage Get Account Usage & Quota ~44
Get current billing period usage and remaining quota — mcp_queries, api_requests, export_companies, ask_ai_credits, watchlist_companies. Includes limits and reset date.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
search_companies Search Polish Companies ~1,010
Search and filter Polish KRS companies (spółki). Compabase also holds the full CEIDG/JDG register; this tool does not browse JDG — those without a public contact email are hidden because of RODO. Default `fields=summary` returns a compact row (name, NIP, KRS, location, PKD, latest financials, email/phone/website) — small enough for MCP clients. `fields=contacts_only` is name/NIP/KRS/city/email/phone/website only. `fields=full` returns every company_search column plus contacts and may exceed client size limits. Use for rankings, sector filters, city/county/region browsing, name search, or NIP/KRS lookup. When a PKD is mostly JDG, a sparse result includes a `hint` (full CEIDG is in the database; listing is RODO-gated). Do not call export_companies just to get a handful of emails or phones.
| Name | Type | Req | Description |
|---|---|---|---|
| all_pkd | string | – | Match any PKD code in the company's activity list (not just primary). |
| capital_max | number | – | Maximum share capital. |
| capital_min | number | – | Minimum share capital. |
| city | string | – | City name — KRS records use uppercase, e.g. 'WARSZAWA', 'POZNAŃ'. |
| county | string | – | County / powiat (lowercase). |
| currency | string | – | Currency for monetary filters. Default: pln. |
| ebitda_max | number | – | Maximum EBITDA. |
| ebitda_min | number | – | Minimum EBITDA. |
| estimated_value_max | number | – | Maximum Ohlson estimated equity value in PLN. |
| estimated_value_min | number | – | Minimum Ohlson estimated equity value in PLN. |
| fields | string | – | Response size. Default summary (name, NIP, KRS, location, PKD, latest financials, email/phone/website). contacts_only: name, NIP, KRS, city, email, phone, website. full: every company_search column p… |
| has_email | boolean | – | true = only companies with email on record. Matching rows include contacts.email. Omit otherwise. |
| has_website | boolean | – | true = only companies with website on record. Matching rows include contacts.website. Omit otherwise. |
| is_active | boolean | – | true = active only, false = closed only. Omit for all. |
| krs | string | – | KRS number of the company in the Polish National Court Register (10 digits). |
| legal_form | string | – | Legal form fragment, e.g. 'spółka z o.o.' or 'akcyjna'. |
| limit | integer | – | Max results (default: 10, max: 50). |
| name | string | – | Company name, used when the KRS or NIP is not known. |
| nip | string | – | Polish company tax number (NIP) of the business, 10 digits. |
| pkd | string | – | Primary PKD code prefix, e.g. '46.90.Z' or '46'. |
| postal_code | string | – | Postal code prefix, e.g. '00-9' or '61-'. |
| profit_max | number | – | Maximum net profit. |
| profit_min | number | – | Minimum net profit. |
| profit_operating_max | number | – | Maximum operating profit (PLN). Omit if unused. |
| profit_operating_min | number | – | Minimum operating profit (PLN). Negative allowed. Omit if unused. |
| region | string | – | Voivodeship (lowercase), e.g. 'mazowieckie', 'wielkopolskie'. |
| registration_date_max | string | – | Latest KRS registration date, YYYY-MM-DD (inclusive). |
| registration_date_min | string | – | Earliest KRS registration date, YYYY-MM-DD (inclusive). For newly registered companies use today's date for both registration_date_min and registration_date_max. |
| revenue_max | number | – | Maximum total revenue. |
| revenue_min | number | – | Minimum total revenue. |
| sort_by | string | – | Sort field (default: revenue_total). registration_date + sort_dir=desc lists the newest registrations first. revenue_growth_pct + sort_dir=desc lists the fastest-growing companies (y/y revenue growth… |
| sort_dir | string | – | Sort direction (default: desc). |
| total_assets_max | number | – | Maximum total assets. |
| total_assets_min | number | – | Minimum total assets. |
| year | integer | – | Filter to companies whose latest financial_period_to falls within this calendar year (e.g. 2024). Use only for sector/ranking browse — omit when looking up a company by name, KRS, or NIP. |
No output schema declared.
No examples provided.
How do I install the Polish KYB MCP server?
Polish KYB is a hosted endpoint at https://compabase.com/api/mcp/kyb, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · compabase.com
claude mcp add --transport http contentwriterco-polish-kyb 'https://compabase.com/api/mcp/kyb'
What is the Polish KYB MCP server?
Polish KYB is an MCP server listed in the public MCP registry as io.github.ContentWriterco/polish-kyb. Know-your-business checks for Polish companies: KRS, owners, insolvency, sanctions, gazette notices. This page covers its hosted endpoint (https://compabase.com/api/mcp/kyb).
Is the Polish KYB MCP server safe to use?
Polish KYB scores 76 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Polish KYB MCP server expose?
Polish KYB exposes 12 tools: search_companies, get_company, get_company_people, get_company_stock_market, get_company_court_gazette, and 7 more. Their descriptions and schemas cost roughly 2,487 tokens of context every time the server is loaded.
Does the Polish KYB MCP server require authentication?
No. We connected to Polish KYB without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Polish KYB MCP server still maintained?
Polish KYB is still listed as active in the MCP registry. We last reached this channel on 24 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.