Compabase
Search 3M+ Polish companies by financials, ownership, industry, and regulatory status.
Access KRS and CEIDG registry data for Polish companies including financials, ownership structures, management, public aid, EU funding, procurement records, energy licenses, and stock market data. Supports bulk export and custom SQL queries.
Try asking Muse: "Find all manufacturing companies in Warsaw with revenue over 5 million PLN and export their contact details."
Source: Found in the official MCP Registry (io.github.ContentWriterco/compabase) · First listed September 25, 2026
Last 24 hours
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How to add it to Muse
Not in Muse's Connectors list yet, but Muse can still use it. Copy the request below and paste it into Muse. Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
https://compabase.com/api/mcpNot in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
Technical details: safety screening, tools, response time and recent checks
Response time at the last check: 1507ms. Worked in 100% of checks over 30 days.
Screening · September 25, 2026
Screened, no issues found
Screening looks for known threats and hidden instructions at the time of the check, and runs again weekly and whenever the tool list changes. It cannot see the server's code, so only connect what you need and review what Muse asks to do. How screening works.
Tools · 40
request_signupStart Compabase account setup for an email. Sends a magic link. After the user clicks it, poll check_signup with the returned setup_id until status is ready — then you receive an MCP key automatically. Do not ask the user to generate a key in the portal. No auth required.check_signupPoll a request_signup session. When the user has confirmed email, returns mcp_key once and cursor_mcp_json to write to MCP config. Call every 3 seconds until status is ready, expired, or already_delivered. No auth required.list_plansList Compabase billing plans and limits. No auth required. After sign-up, use upgrade_plan to get a Stripe Checkout URL.search_companiesSearch 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, latesget_companyGet company registry profile and headline financials for one latest filed period (`financials.period_to` / `financial_period_to`): revenue, profit, costs, assets, estimated_value (Ohlson/RIM equity estimate), PKD, address, plus contacts when on record. All money fields in this reget_financialsGet full financial statement metrics per fiscal period — all entity_financial_metrics columns. Includes cash_and_equivalents, inventories, receivables, liabilities, equity, cost breakdown, revenue lines. Identify company by name, KRS, or NIP.get_company_peopleGet 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.count_companiesCount KRS companies matching given filters. Returns a single number — no company list. Does not count JDG in this tool (full CEIDG is in Compabase; listing is RODO-gated). Sparse or zero counts in JDG-dominated PKDs include a `hint`.execute_sqlExecute a read-only SQL SELECT query against the Compabase database. Use when dedicated tools are not enough (aggregations, joins, custom analysis).get_company_rankingsGet a company's revenue rank positions within its industry (PKD), region (voivodeship), and all of Poland. Returns rows from company_financial_rankings — one row per scope (pkd_full, pkd_division, pkd_section, region, country). Use for questions like: where does company X rank inget_financial_statsGet precomputed aggregate financial statistics for a sector, region, PKD branch, or country. Returns median, p25/p75/p90, winsorized mean, mean, total, n_companies, min/max. Use for questions like: what is the median revenue / average profit / assets in industry X or region Y? Prget_company_public_aidGet SUDOP public aid / grants for a company — full case list with amounts, grantor, measure, purpose. Keyed by NIP. Identify company by name, KRS, or NIP.get_company_eu_fundsGet European Funds (Fundusze Europejskie) projects for a company — official MFiPR lists, EU co-financing, programme and dates. Keyed by NIP. Identify company by name, KRS, or NIP. Cohesion/shared-management funds; not TED procurement, not FTS Commission grants, and not SUDOP statget_company_procurementGet European Commission FTS awards for a company — Horizon, LIFE, Erasmus and other direct/indirect-management grants. Keyed by NIP (VAT). Identify by name, KRS, or NIP. Not cohesion funds (get_company_fe) and not TED procurement.get_company_public_tendersGet BZP public procurement data — full awards as contractor and notices as buyer, with award values. Keyed by NIP. Identify company by name, KRS, or NIP.get_company_energy_licensesGet URE energy concessions for a company — full list of electricity, gas, heat, and liquid fuels, with validity dates and pending applications. Keyed by NIP. Identify company by name, KRS, or NIP.get_company_waste_registryGet BDO waste and packaging register data — registration number, EUP site count, activity flags, and headquarters decisions with issue and validity dates. Keyed by NIP. Identify company by name, KRS, or NIP.get_company_stock_marketGet 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 shaget_company_eu_tendersGet TED EU-threshold public procurement — full awards as contractor and notices as buyer. Keyed by NIP. Identify company by name, KRS, or NIP.get_company_court_gazetteGet Court and Commercial Gazette (MSiG) notices for one company. Matched by KRS or NIP (creditor calls, dissolution, mergers, liquidation).get_company_sanctionsOfficial 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.get_company_debt_registryGet KRZ insolvency / restructuring proceedings. KRS companies via company_krz; sole proprietors via CEIDG KRZ by NIP.get_company_beneficiariesGet 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.get_company_articlesGet full text of the company's articles of association or statute (umowa spółki / statut) from RAR (Repozytorium Akt Rejestrowych). Use when the user asks about: share transfer consent, preemption rights, non-compete clauses, company duration, voting rights, special share classesget_usageGet current billing period usage and remaining quota — mcp_queries, api_requests, export_companies, ask_ai_credits, watchlist_companies. Includes limits and reset date.get_planGet the user's active billing plan details — plan name, price, status, limits, prepaid credit balance, and billing period reset date.list_watchlistList companies on the user's watchlist with company data (name, KRS, NIP, revenue, city). Supports pagination via limit/offset.add_to_watchlistAdd a company to the user's watchlist. Identify by KRS (10-digit) or NIP (10-digit). Supports both KRS companies and CEIDG sole proprietorships (via NIP).remove_from_watchlistRemove a company from the user's watchlist. Identify by KRS or NIP.list_api_keysList all active REST API keys (cb_…) for the user's account. Returns id, name, key_prefix, created_at, last_used_at.create_api_keyCreate a new REST API key (cb_…). The raw key is returned once and cannot be retrieved later.delete_api_keyRevoke (deactivate) a REST API key by its ID. The key stops working immediately.list_mcp_keysList all active MCP keys (mcpk_…) for the user's account. Returns id, name, key_prefix, created_at, last_used_at.create_mcp_keyCreate a new MCP key (mcpk_…). The raw key is returned once and cannot be retrieved later.delete_mcp_keyRevoke (deactivate) an MCP key by its ID. Cannot revoke the key currently in use. The key stops working immediately.export_companiesBulk file export of companies matching filters (CSV / XLSX / JSON). Up to 500 rows per call. Default `fields=contacts_only`: name, NIP, KRS, city, email, phone, website — small enough to use in-chat. `fields=summary` adds location, PKD, latest revenue/profit. `fields=full` is theupgrade_planCreate a Stripe Checkout session for a plan upgrade. Shows current plan and available upgrades. Pass plan_id ('pro' or 'scale') to get a checkout_url on checkout.stripe.com — open it in the browser for the user to pay. Do not send the user to the marketing pricing page.set_webhook_urlConfigure, view, or remove webhook for watchlist event notifications. Events: watchlist.company_changed, watchlist.financials_updated, watchlist.company_removed_from_registry.get_byok_keysList configured Bring-Your-Own-Key (BYOK) provider keys status. Shows which providers (openai, claude, gemini) have keys configured, with prefix and last-used date. Never returns the actual key.set_byok_keyAdd or update a BYOK provider API key. Key is encrypted at rest (AES-256-GCM). Requires paid plan (Pro+). Providers: openai (sk-…), claude (sk-ant-…), gemini (AIza… or AQ.…).Recent checks
Link
https://compabase.com/api/mcpQuestions about Compabase in Muse
How do I connect Compabase to Muse?
Not in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use Compabase to help me. It is a free service with an MCP server at https://compabase.com/api/mcp. It needs an API key from ContentWriterco; ask me to enter it through your secure credential prompt. Ask me before you share anything with it." Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
Is Compabase working right now?
At the last check (September 28, 2026, 08:01 UTC) the endpoint was working, answering in 1507ms. Over the last 7 days it answered 100% of health checks. It is checked every 15 minutes.
Is Compabase safe to connect to Muse?
It was screened on September 25, 2026 with the result "screened, no issues found". Screening checks the domain against threat feeds and reads the tools for hidden instructions and requests for passwords or card numbers. It cannot see the server's code, so grant only the access you need.
What can Compabase do in Muse?
It exposes 40 tools, including request_signup, check_signup, list_plans, search_companies. For example, you could ask Muse: "Find all manufacturing companies in Warsaw with revenue over 5 million PLN and export their contact details."
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