Business – Free-tier APIs
35 Free-tier APIs in the category Business. Free public web APIs that developers and AI agents can call. Entries come from the open public-apis list; each link was checked automatically (HTTP status) on the date shown, which says the site responded, not that the API is good.
Apache Superset
API to manage your BI dashboards and data sources on Superset
Clearbit Logo
Search for company logos and embed them in your projects
Compabase
Polish company data: 3M+ KRS and CEIDG entities with financial statements, people and rankings
Crustdata
People and company data covering profiles, headcount, funding and contacts
Domainsdb.info
Registered Domain Names Search
EuroValidate
EU VAT (VIES), IBAN and EORI validation with company name & address lookup
Freelancer
Hire freelancers to get work done
Funding Signals
Companies that just raised funding, scored as sales leads, from public SEC filings
GlobalEntity
Official company data from 56 European business registers as normalized JSON
Gmail
Flexible, RESTful access to the user's inbox
Google Analytics
Collect, configure and analyze your data to reach the right audience
gstinapi
Verify Indian GST numbers (GSTIN): legal name, status, address and return filing history; free tier
Instatus
Post to and update maintenance and incidents on your status page through an HTTP REST API
InvoiceIn
Parse and validate received e-invoices: XRechnung, ZUGFeRD, Peppol, FatturaPA, KSeF
Invovate
Generate PDF, JSON & UBL invoices in 11 languages from one JSON POST
Katalis
UK company checks: payment practices, contracts won, registers, filed accounts, change feed
KontragentPro
Russian company data from state registers by INN or OGRN: profile, finances, timeline
Legal Sandbox Georgia
Find verified legal specialists in Georgia from natural-language queries
Mailchimp
Send marketing campaigns and transactional mails
mailjet
Marketing email can be sent and mail templates made in MJML or HTML can be sent using API
markerapi
Trademark Search
Meirra
SEO monitoring, email verification, lead generation, and marketing analytics
PeopleSearch
People and company search in plain English, with verified work emails and email verification
Pick an Agency
Search 47,000+ marketing agencies by service, location and rating
RankFabrik Places
Search businesses and points of interest by city, deduplicated with a coverage report
Redash
Access your queries and dashboards on Redash
RegisterWire
Real-time alerts on UK company register changes
Smartsheet
Allows you to programmatically access and Smartsheet data and account information
Square
Easy way to take payments, manage refunds, and help customers checkout online
SwiftKanban
Kanban software, Visualize Work, Increase Organizations Lead Time, Throughput & Productivity
Tomba email finder
Email Finder for B2B sales and email marketing and email verifier
TradeDataHub
U.S. contractor datasets with a free discovery API for coverage, pricing and masked previews
Trello
Boards, lists and cards to help you organize and prioritize your projects
UGC VZ
Directory of DACH user-generated-content creators with topics, cities, rates and contact requests
Village
Person and company enrichment plus warm introduction paths through your network