A business information API delivers structured company data to your systems on demand, so you can enrich records, verify businesses, and power decisions without manual research. You send a company name or domain, and the API returns firmographics, registration details, financials, and more. It is the fastest way to keep company data accurate across your stack.
This guide compares the 7 best business information APIs for 2026. You will see what data each one returns, where it fits, what it costs, and how to choose. We also explain how a business information API differs from a contact data API, so you pick the right layer for the job. We lead with our recommendation, then give an honest look at every serious option.
What is a business information API?
A business information API is an interface that returns structured data about a company through a programmatic request. You send an identifier such as a domain, company name, or registration number, and the API returns fields like industry, size, revenue, location, and legal status. It runs in real time, so your records stay current without manual lookups.
Think of it as a live company database you query from your own software. Instead of researching a business by hand, your CRM, app, or data warehouse calls the API and gets a complete, structured profile back in seconds. This is also called a company data API or company information API.
What data can you get from a business information API?
A business information API returns four main categories of company data: firmographics, registration data, technographics, and linked contacts. The exact fields vary by provider, but together they give you a full picture of a business and the people inside it.
- Firmographics: industry, employee count, revenue, headquarters, and locations.
- Registration data: legal name, incorporation details, company number, and ownership structure.
- Technographics: the software and technologies a company uses.
- Linked contacts: verified emails and mobile numbers for people at the company, when you need to act on the data.
Business information API vs contact data API: what is the difference?
A business information API returns data about a company, while a contact data API returns data about a person. The first answers “what is this company,” with firmographics and registration. The second answers “how do I reach this person,” with a verified email and mobile number. Most go-to-market teams need both.
You use a business information API to enrich accounts, verify businesses, and segment your market. You use a contact data API to turn those accounts into people you can email or call. Tools like Scalelist bridge the two: they take a company domain and return the verified contacts inside it, so company data becomes action. For a deeper look at the contact side, see our guide on the best B2B data API for outbound.
What are the 7 best business information APIs in 2026?
The best business information API depends on your goal. For pure firmographic and company-web data at scale, Coresignal leads. For registry and KYB data, CompanyData.com fits. For turning company data into verified, reachable contacts, Scalelist is the best pick. The table below ranks each provider by what it does best.
| Provider | Best for | Company data depth | Verified contacts | Entry price |
|---|---|---|---|---|
| ———- | ———- | ——————– | :—————–: | ————- |
| Scalelist | Company data into verified contacts | Firmographic + domain | Yes (email + mobile) | Free (50 credits), then $99/mo |
| Coresignal | Firmographic web data at scale | Very high (300+ points) | No | From $49/mo |
| CompanyData.com (Bold) | Registry, KYB, verification | Very high (registration) | Basic contacts | From €425 |
| Cognism | Enterprise DaaS + compliance | High | Yes (phone-verified) | ~$17,000/yr |
| Bright Data | Custom web data at scale | Custom datasets | No | Usage-based |
| Techsalerator | Bulk firmographic + consumer data | High (320M+ profiles) | Limited | Quote-based |
| People Data Labs | Developer datasets | High | Partial (unverified) | Usage-based |
1. Scalelist (best for turning company data into verified contacts)
Scalelist is the best pick when your goal is to act on company data, not just store it. It takes a company domain or a LinkedIn URL and returns verified work emails and mobile numbers for the people inside that company, sourced through a waterfall across 10+ providers and verified before delivery.
Scalelist is contact-data-first, so it is not a deep firmographic or registry database like Coresignal or CompanyData.com. Where it wins is the last mile: turning a company record into reachable, verified people. It connects natively to Clay and Instantly, so enrichment happens inside your workflow.
Pricing: free plan with 50 credits. Paid from $99 per month for 5,000 credits. Emails cost 1 credit, mobiles cost 20 credits. Pay-as-you-go, no annual contract.
Where it fits: outbound, RevOps, and growth teams that already have company lists and need the verified contacts to act on them.
2. Coresignal
Coresignal is the strongest pure company data API on this list. Its API covers 67M+ company profiles with 300+ data points each, refreshed continuously from public web sources, and delivered as structured JSON with Elasticsearch query support.
Pricing: from $49 per month, credit-based, with free credits to start.
Where it fits: developers and data teams building products on firmographic data. It does not return verified contacts, so outbound teams add a contact layer on top.
3. CompanyData.com (Bold Data)
CompanyData.com is built for registry and verification use cases. Its API covers 303M+ companies and 287M+ contacts, with registration details, incorporation data, and ownership structure, refreshed with 600k+ new records monthly.
Pricing: from €425, depending on datasets.
Where it fits: teams that need registry-grade data for KYB, compliance, and customer verification. Records are static, so they suit due diligence over outreach.
4. Cognism
Cognism is a sales intelligence platform with a company data API delivered mainly through its Data as a Service offering. It is known for phone-verified mobiles and strong compliance, with GDPR, CCPA, PECR, SOC 2 Type II, and ISO 27001.
Pricing: DaaS requires a minimum seat starting around $17,000, with no free tier.
Where it fits: enterprise teams with budget and a compliance mandate. The price floor rules it out for most small and mid-market teams.
5. Bright Data
Bright Data is infrastructure for collecting company data at scale, combining proxy networks, scraping tools, and ready-made datasets. You can commission custom company datasets or build your own with its scraping stack.
Pricing: usage-based, with custom quotes.
Where it fits: engineering teams that need custom web data at volume. It is the wrong layer for a team that just wants a clean company profile from an endpoint.
6. Techsalerator
Techsalerator is a bulk data provider offering 320M+ company profiles plus 2B consumer records, with firmographic, demographic, and alternative datasets. It emphasizes speed and custom delivery.
Pricing: quote-based, request a quote.
Where it fits: teams that need large-scale firmographic or alternative datasets for a specific project.
7. People Data Labs
People Data Labs is a developer-first person and company data API with dataset licensing and usage-based access to billions of records. It suits engineering teams adding company data to their own product.
Pricing: usage-based, priced for developers.
Where it fits: product and data teams with engineering resources. The data is raw, so verification is your responsibility.
How do you choose a business information API?
Choose a business information API by matching the data type to your use case, then checking coverage, freshness, compliance, and price. A team enriching accounts needs firmographics. A team running KYB needs registration data. A team doing outbound needs verified contacts. Start from the job, not the feature list.
Ask these five questions before you commit:
- What data do you actually need? Firmographics, registration, technographics, or contacts.
- How fresh is the data? Continuous refresh beats static dumps for live workflows.
- What is the coverage in your markets? Check fill rate on your own sample, not the marketing page.
- Is it compliant? Look for GDPR and CCPA alignment, and SOC 2 or ISO for regulated sales.
- Does the pricing match your usage? Credit and usage models scale. Annual contracts lock you in.
How much does a business information API cost?
Business information API pricing ranges from free tiers to enterprise contracts above $17,000 per year. Self-serve providers like Coresignal start at $49 per month and Scalelist starts free. Registry providers like CompanyData.com start around €425. Enterprise DaaS like Cognism uses annual contracts with a high floor.
The pricing model matters more than the headline number. Credit-based and usage-based pricing lets you match spend to need and test before you commit. A low price means little if coverage in your markets is poor, so always verify fill rate on a sample first.
What are common use cases for a business information API?
The most common use case is CRM enrichment: automatically completing account records with firmographics so sales and marketing work from accurate data. Beyond that, business information APIs power business verification, market intelligence, and lead routing.
- Account enrichment: fill missing firmographics on company records automatically.
- Business verification and KYB: confirm a company exists and check its legal status.
- Market intelligence: size a market or segment by industry, region, and headcount.
- Lead routing and scoring: route accounts by territory and score them on accurate data.
- Outbound activation: pair company data with a contact data API to reach the right people.
FAQ
What is a business information API?
A business information API is an interface that returns structured company data through a programmatic request. You send an identifier like a domain or company name, and it returns fields such as industry, size, revenue, location, and legal status in real time.
What is the difference between a business information API and a company data API?
They mean the same thing. Both return structured data about a company, such as firmographics and registration details. Some providers brand it as a business information API, others as a company data API or company information API.
What is the best business information API?
It depends on the job. Coresignal is best for firmographic web data at scale, CompanyData.com for registry and KYB, and Scalelist for turning company data into verified, reachable contacts. Match the provider to your use case.
Can a business information API return contact details?
Some do, but most return company-level data only. To get verified emails and mobile numbers for people at a company, pair the business information API with a contact data API. Scalelist does both, taking a company domain and returning verified contacts.
Is a business information API GDPR compliant?
It can be, as long as the provider collects only business data with a lawful basis and gives you a sourcing trail. Compliance is a property of the provider, not the API. Look for GDPR and CCPA alignment, plus SOC 2 Type II or ISO 27001 for regulated use.
The bottom line
A business information API keeps company data accurate across your stack without manual research. The right choice depends on the job. For firmographic data at scale, Coresignal leads. For registry and KYB, CompanyData.com fits. For turning company data into verified contacts you can actually reach, Scalelist is the best pick.
If your goal is to act on company data, start with the contact layer and test it on your own list. You can enrich your first 50 contacts free and check the fill rate before you spend anything.
Company data API: what to check before you integrate
A company data API returns firmographic and technographic detail for a domain: headcount, industry, revenue band, locations, funding and technology stack. Four things decide whether one is worth integrating.
- Match rate on your own domains. Test 100 you already know rather than trusting a published figure.
- Which fields are observed and which are modelled. Revenue is almost always modelled for private companies. Ask.
- Rate limits and latency. If you enrich on signup, latency sits in your conversion path.
- Refresh policy. A cached response from eight months ago is not a live lookup, and few providers say so unprompted.
For the person-level equivalent see the people data API. For appending this to records in bulk see company enrichment and B2B data enrichment.
