Comparison · Vainu
Vainu alternative
Vainu is a Finnish company data platform with a public API, and for most of what it does it is broader than we are. This is the honest split, for teams looking up Finnish companies from code.
TL;DR
Vainu — founded in 2013, with offices in Helsinki and Stockholm — is a Nordic company and contact data platform for sales, CRM and data teams. It has a serious public API: a REST v3 developer hub, OAuth 2.0 client-credentials and JWT authentication, a query language, asynchronous endpoints for full-country pulls, a CLI and an MCP server. Everything on this page about Vainu was read on its own sites (vainu.com, developers.vainu.com and its help centre) on 2026-09-29; nothing comes from a third party.
Prometiam is the register-record API. You hand it a Y-tunnus, a Finnish VAT number or a few typed letters and get the Finnish Trade Register record back in the same response shape as every other live country, with corporate insolvency notices linked by business ID. If you need contacts, financials or group structures on Finnish companies, Vainu is the better tool and we are not a substitute. If you need the official record of a Finnish counterparty at a price you can see, starting without a sales conversation, we are the leaner fit.
Where Vainu is genuinely ahead
- Breadth of data. Its data page describes contact data (a Finnish contact database), financial data collected from financial statements, group structure and owner data, technology data, vehicle data, event data and its own custom industry classification. The Finnish record on Prometiam is the register record; financial statements are available for Finnish companies that file digitally with PRH, the Finnish Patent and Registration Office (about one in twenty, registered since July 2023) and for listed groups (their ESEF annual financial reports), and every Finnish company has Finnish Tax Administration tax records from 2020 (CC BY 4.0); contains data from the Finnish Patent and Registration Office (PRH), CC BY 4.0.
- Nordic reach. Its API lists databases for Finland, Sweden, Norway, Denmark and the Netherlands. Check Prometiam's coverage list against the Nordic countries you need before you assume parity.
- CRM connectors and automation. Connectors for HubSpot, Pipedrive, Microsoft Dynamics and Salesforce, webhooks and a Signals endpoint (beta) for company changes.
- A wide developer surface. A query language for filtering whole databases, asynchronous endpoints for full-country pulls, CSV, JSONL and XLSX export, a Python CLI and an MCP server. We serve lookups and searches, not database-wide filtering.
- Prospecting UX. Lists, insights and a custom industry classification for finding the companies you should sell to. That is a different job from verifying the one you are onboarding.
Where Prometiam is ahead
- You can see the price, and start on it. Prometiam publishes every tier: a 14-day trial, then €9.99 to €99.99 a month, monthly or annual. Vainu's pricing page lists API access under its CRM plan (from 4,200 EUR a year plus a 750 EUR one-time onboarding fee) and its Data plan (customised pricing), on 12-month auto-renewing subscriptions, and its help centre says API access is an additional feature that is not automatically included in a licence.
- The official record, validated. A Y-tunnus is checked against its modulus-11 digit before you spend a call, and the Finnish VAT number resolves to the same company. Status and dates come from the register itself, and a company it flags as bankrupt, in liquidation or in restructuring is not served as plain active.
- Insolvency notices linked by business ID. Finnish corporate insolvency notices are attached to the company by its Y-tunnus, one
?include=insolvencyaway. - One schema across the registries. The same response shape for Finland as for every other registry the API covers; adding a market is a
countryvalue, not a second integration. - No annual commitment. Monthly is the default and neither billing option has a minimum term.
A note on their figures
If you compare numbers, check which one a page means. Vainu's own pages state three different data-field counts: 300+ on its developer hub and help centre, 500+ on its API page and 700+ on its data page.
We mention this not as a gotcha but because it is worth checking on any vendor, ours included. Our per-country counts come from a live /coverage endpoint you can call yourself rather than a number typed into a page.
Built for the API-native workflow
Vainu is built around finding and enriching companies at scale. If your workflow is a lookup instead — resolving a customer's identifier, or a few typed letters, into a company record for an onboarding form, an invoice or a CRM row — this is what that looks like on Prometiam:
- Every identifier, one parameter. NIF/CIF, SIREN or SIRET, the Companies House number, the CRO number, the KRS number, the organisasjonsnummer, the Y-tunnus and each other registry's own number all go in the same parameter —
?country=picks the register, the parameter doesn't change. Vainu's developer docs write a Finnish business ID as the country prefix and the digits (for exampleFI05381340); Prometiam takes the register's0538134-0, with or without the hyphen, and the VAT formFI05381340throughvat=. - Name search built for a form field.
?name=is a normalised, partial match — call it on every keystroke and wire it into a type-ahead. - One schema, every registry. The same response shape for every
?country=value. - Auth and rate limits. A single bearer key (
Authorization: Bearer rk_live_...) issued at signup; limits scale 10 to 600 requests/minute by tier. - A typed client, if you want one. prometiam-risk-api on npm — TypeScript types, retries on 429/5xx, cursor pagination, typed errors. The same client for Python: prometiam-risk-api on PyPI.
- From an agent, not just a form. The MCP server (
prometiam-risk-mcpon npm) puts the same lookups in Claude Desktop, Cursor or any MCP client. Vainu publishes an MCP server too. - Public pricing, monthly or annual. Every tier is published; paying yearly is ten months' price for twelve. Starter begins with a 14-day trial: 500 credits, 10 requests/minute, card required, nothing charged for 14 days. Subscribing keeps the same key working. The trial is not an ongoing plan.
- Try an identifier before signing up. Free Y-tunnus (also as a Finnish-language search), NIF, SIREN, Companies House number, KRS, CRO number and organisasjonsnummer lookup tools run the same call with a shared key. Vainu's API trial is a token requested from its site: 30 days, at most 20 results per request, one endpoint and one request at a time.
At a glance
| Prometiam | Vainu (read 2026-09-29) | |
|---|---|---|
| What it is | A register-record API: lookup, validation, one schema across the live registries | A Nordic company and contact data platform for sales, CRM and data teams, with an API |
| Finland | Company records from the Finnish Trade Register: legal name, legal form, status, registered address, activity code and dates; with register-change events and monitoring, but no officers and no registry-compliance signal. Corporate insolvency notices are linked by business ID. | A Finnish company database with contacts, financials, group structures, technology, vehicle and event data (its data page) |
| Other databases | Every live country under one schema; corporate insolvency across sixteen markets | FI, SE, NO, DK, NL (its API docs) |
| Identifier form | Y-tunnus as the register writes it, 0112038-9; the VAT form via vat=FI01120389 | Country prefix and digits, for example FI05381340 (its docs) |
| Contacts and financials | No contacts; financial statements for Finnish digital filers (about one in twenty) and listed groups; tax records from 2020 | Yes, per its data page |
| API | REST, bearer key, TypeScript SDK, MCP server | REST v3, JWT and OAuth 2.0 client credentials, query language, async endpoints, CLI, MCP server |
| Free access | 14-day trial: 500 credits, card required, nothing charged for 14 days, key at signup | API trial on request: 30 days, 20 results per request, one endpoint |
| Pricing | Public — 14-day trial, then €9.99 to €99.99, plus custom, monthly or annual | Pricing calculator: Prospecting from 3,500 EUR a year, CRM from 4,200 EUR a year (API listed under CRM and Data), Data customised; 12-month auto-renewing |
| Commitment | None; monthly or annual | 12-month subscription, renewing automatically |
Which to choose
Choose Vainu if you are a sales, marketing or CRM team that needs contacts, financials, group structures or technology data on Finnish and other Nordic companies, want list building and CRM connectors, or need to pull whole databases, and an annual contract fits.
Choose Prometiam if you are building onboarding, invoicing or KYB flows that need the official record of a counterparty by Y-tunnus, VAT number or name, the same response shape across several countries, the linked insolvency notices, and a published price you can start on without a sales call.
The two also combine: Vainu to find and enrich accounts, Prometiam to verify the one that signs up.
FAQ
Is Vainu an API-native Finnish company data provider?
Yes. Founded in 2013 with offices in Helsinki and Stockholm, it publishes a REST v3 developer hub with OAuth 2.0 client-credentials and JWT authentication, a query language, asynchronous endpoints, CSV, JSONL and XLSX export, a CLI and an MCP server. Its API lists Finnish, Swedish, Norwegian, Danish and Dutch databases.
What does Vainu cost?
Its pricing page lists Prospecting from 3,500 EUR a year plus a 200 EUR onboarding fee, CRM from 4,200 EUR a year plus 750 EUR, and Data on customised pricing, with API access listed under CRM and Data. Its help centre says API access is an additional feature not automatically included in a licence. Prometiam publishes every tier, starting with a 14-day trial with a card required and nothing charged for 14 days.
Can I try the Vainu API for free?
On request. Its trial token lasts 30 days, returns at most 20 results per request, covers one endpoint, and allows one request at a time and 1,000 requests per week. A Prometiam key is issued at signup with nothing charged for 14 days, and the free lookup tools run the same call without a key.
Does Prometiam have Finnish contacts, financials or officers?
No contacts or officers, and financials only for some companies. Finland is company-level, with register-change events and monitoring, but no officers and no registry-compliance signal. Financial statements are available for Finnish companies that file digitally with PRH, the Finnish Patent and Registration Office (about one in twenty, registered since July 2023) and for listed groups (their ESEF annual financial reports), and every Finnish company has Finnish Tax Administration tax records from 2020 (CC BY 4.0); contains data from the Finnish Patent and Registration Office (PRH), CC BY 4.0. For contact data, financial figures or group structures, Vainu is the better tool.
Can I use both?
Yes, and many teams should: Vainu for prospecting and enrichment, Prometiam for the register record, Y-tunnus and VAT validation and the linked insolvency notices at onboarding.