Search 300M+ B2B contacts with 100+ filters
Last reviewed: March 2026
The Lead Finder API opens up a database of over 300 million professional contacts. Filter by person attributes (name, title, function, seniority, skills, certifications, languages, education, location), company firmographics (size, revenue, industry via SIC and NAICS codes, headquarters, specialties), technographic stack (CRM, marketing automation, ABM, analytics, CMS, cloud provider, email hosting, security, development tools, ecommerce, ERP), hiring signals (open roles by department), digital presence (organic and paid traffic, Google ad spend, LinkedIn growth rate, mobile and web apps), and funding data (last funding date, amount, type, investors, total funding). Search and count queries cost zero credits. Reveal up to 25 contacts per request, then export to CSV or save searches for later.
Features
300M+ Contact Database
Access over 300 million professional profiles spanning every industry, function, and geography worldwide.
100+ Search Filters
Filter by person, company, technographic, hiring, digital presence, and funding attributes with over 100 filter options.
Technographic Filters
Filter companies by their tech stack: CRM, marketing automation, ABM, analytics, CMS, cloud provider, email hosting, security, dev tools, ecommerce, and ERP.
Hiring Signal Filters
Target companies actively hiring by department: marketing, sales, engineering, product, customer success, HR, and more.
Digital Presence Filters
Filter by organic and paid traffic volume, Google ad spend, LinkedIn follower growth rate, mobile apps, web apps, and app store data.
Funding Data Filters
Filter by last funding date, funding amount, funding type (Series A, B, C, seed, etc.), investors, and total funding raised.
Free Count Queries
Check how many leads match your filters before spending any credits. Count queries cost zero credits, always.
Contact Reveal (25 per Request)
Reveal verified email addresses and phone numbers for up to 25 leads in a single API request.
CSV Export
Export thousands of matching leads to CSV asynchronously for import into your CRM, outreach tool, or spreadsheet.
Saved Searches
Save filter combinations for reuse. Run the same search later to find new leads matching your criteria.
Company Autocomplete
Type-ahead company name suggestions help you find and filter by the exact companies you are targeting.
Person-Level Filters
Filter by name, job title, job function, seniority level, skills, certifications, languages spoken, education, and location.
API Endpoints
/lead-finder/searchSearch leads with 100+ filters (returns preview data)/lead-finder/countCount matching leads (free, zero credits used)/lead-finder/revealReveal contact info for up to 25 leads per request/lead-finder/enrichEnrich contacts with specific fields (email/phone)/lead-finder/unlock-namesUnlock full last names for leads/lead-finder/exportExport matching leads to CSV (async)/lead-finder/savedList saved searches/lead-finder/filter-optionsGet all available filter options and values/lead-finder/suggestAutocomplete company names/lead-finder/reveal-jobs/{jobId}Poll reveal/enrich job status/lead-finder/export-jobs/{jobId}Poll export job status/lead-finder/export-jobs/{jobId}/downloadDownload exported CSV fileUse Cases
- Sales prospecting: build targeted lead lists using title, company, industry, and technographic filters
- Account-based marketing: find decision-makers at target accounts filtered by seniority and department
- Hiring signal targeting: reach companies actively hiring in specific departments as a buying intent signal
- Technographic selling: find companies using a competitor product and pitch your alternative
- Funding-based outreach: target recently funded companies that have budget for new tools
- Market research: count professionals in specific roles, industries, and geographies for free with count queries
- Recruiting: search candidates by skills, certifications, languages, education, and location
- Event targeting: build invite lists by industry, geography, and digital presence
Pricing
Search and count queries are always free (zero credits). Contact reveal uses variable credits based on your plan. Plans: Growth Pack $49/mo (100K credits), Scale Pack $149/mo (500K credits), Pro Pack $499/mo (2.5M credits). 100 free credits included, no credit card required.
Frequently Asked Questions
Start using the Lead Finder API
100 free API credits. No credit card required. Get started in minutes with our REST API.