⚡ Core Logic: Waterfall ICP
BlitzAPI’s most popular feature is the Waterfall ICP Search. It solves a common engineering challenge: mapping a target account to a specific decision-maker without manual filtering. Instead of retrieving a raw list of employees, you define a priority hierarchy. The API executes a cascading search until it matches your criteria.1. Define the Cascade
You configure a JSON rule: “First, look for the CEO in the US. If not found, look for the VP of Sales. If not found, look for a Sales Director.”
2. Intelligent Routing
The API queries our proprietary dataset in priority order, stopping as soon as your criteria are matched.
Read the Waterfall Logic Docs
See how to construct hierarchical queries to maximize relevance.
♾️ Flat-Rate Unlimited
BlitzAPI is a flat monthly subscription — no per-request fees, no overage surprises. Choose the plan that unlocks the APIs you need.| Plan | Price | Includes |
|---|---|---|
| Unlimited Leads | $399/mo | Waterfall ICP, Company Search, Employee Finder, Domain→LinkedIn, and more |
| Unlimited Email | $499/mo | Everything above + Email Enrichment (62M+ emails, 97% accuracy) |
| Unlimited Phone Numbers | $599/mo | Everything above + Phone Enrichment (US only, +40M mobile numbers) |
See full plan comparison
Detailed feature matrix, use case guide, and free trial info.
People Search Family
Three complementary endpoints — pick the one that matches your scope.Find People
Search decision-makers across many companies in one call. Combine company filters (industry, size, HQ) with person filters (job title, level, location).
Employee Finder
Map all employees at one specific company with paginated, filtered results.
Waterfall ICP Search
Get the single best decision-maker at a known company via a priority cascade.
What do you want to build?
Select the documentation path that matches your technical goal.Quick Start
Get your API Key and execute your first enrichment request via cURL.
Build an ICP List
Generate a fresh prospecting list across hundreds of accounts in one Find People call.
Full Workflow
Chain Search, Enrichment, and Validation into a single automated pipeline.
API Reference
Interactive OpenAPI documentation to test endpoints and view schema definitions.
Supported Integrations
BlitzAPI acts as the data engine behind your existing stack.| Category | Compatible Tools |
|---|---|
| Orchestrators | n8n, Make (Integromat), Zapier |
| Data Operations | Clay, Airtable, Google Sheets |
| CRM & Sales | HubSpot, Salesforce, Pipedrive |
| Outreach | Smartlead, Instantly, Lemlist |
Building a custom integration? Our API is platform-agnostic. As long as your tool can make an HTTP POST request, it works with BlitzAPI.