BlitzAPI
API engine for GTM playbooks
BlitzAPI is a B2B data API aimed at Growth and RevOps teams: a programmable interface over a proprietary LinkedIn-based dataset of 380M+ contacts and 60M+ companies, built around a "Waterfall ICP" cascade that resolves a target account down to a single best-matching decision-maker.
Core capabilities
Vendor's own claim- Waterfall ICP Search: cascading, priority-ordered search for the single best decision-maker at a target company
- Find People / Employee Finder: search decision-makers across many companies or map every employee at one company
- Verified email and direct mobile phone enrichment
- Catch-all email validation in real time
- Company search, company enrichment, and domain-to-LinkedIn / LinkedIn-to-domain resolution
- Job-posting search (TAM by Jobs, Search Jobs) for hiring-signal based prospecting
- Reverse email and phone lookup
API & agent surface
From official docs- Authentication
- API key via `x-api-key` header
- Base URL
- https://api.blitz-api.ai
- Rate limits
- 5 requests per second, per the pricing page's plan cards
- Notable endpoints
- GET /v2/account/key-info - check API key validity, credits, rate limit, active plans
- GET /changelog - public, no API key required
- POST /v2/enrichment/company - company profile from LinkedIn company URL
- POST /v2/enrichment/domain-to-linkedin - domain to LinkedIn company URL
- Waterfall ICP Search - cascading decision-maker search
- Employee Finder - map all employees at one company
- Find People - cross-company person search
- Machine-readable spec
- OpenAPI spec retrieved
Pricing
From official docs| Plan | Price | Included | Notable |
|---|---|---|---|
| Start | $99/month | 10 requests/second; fair use policy of 200,000 returned records/month | Every endpoint and data type, Basic support |
| Scale | $499/month | 25 requests/second; fair use policy of 5,000,000 returned records/month | Every endpoint and data type, Priority support |
| Build Your Infra | From $999/month | Custom rate limits and fair use policy | Discovery call required, Custom SLA, DPA, reseller agreement and infrastructure |
Checked 2026-08-07 against their pricing page. Vendors change pricing without notice.
What is BlitzAPI
Vendor's own claimBlitzAPI is a REST API (OpenAPI 3.1 spec published) for B2B contact and company data, authenticated with an `x-api-key` header. Its most-promoted feature, Waterfall ICP Search, takes a JSON cascade of title/location rules and queries a proprietary dataset in priority order, stopping at the first match rather than returning a raw employee list. It is flat-rate priced (no per-request fees) rather than metered like most enrichment APIs.
Ideal customer profile
Vendor's own claimGrowth Engineers and RevOps teams building automated lead pipelines who want a single decision-maker per account rather than a raw list, and who are comfortable working through an API or no-code orchestrators (n8n, Make, Zapier, Clay) rather than a UI-first tool.
Who should look elsewhere
Our readThe flat-rate plans are gated by capability tier, not usage: to get phone numbers at all you must be on the $599/mo Unlimited Phone Numbers plan, and phone coverage is stated as US-only, so international outbound-calling teams gain little from the top tier.
Tools in the same layer
Our readNo curated rival set covers this tool yet, so these are simply other tools in the same architectural layer and product form. Treat it as a starting point, not a shortlist.
BlitzAPI FAQ
What is Waterfall ICP Search?
BlitzAPI's flagship endpoint: you define a priority cascade (e.g. "CEO in the US, else VP Sales, else Sales Director") and the API queries its dataset in that order, stopping at the first match and returning one decision-maker.
How is BlitzAPI priced?
BlitzAPI plans now differ by speed, fair-use volume, and support, not endpoint access. Start is $99/month for 10 requests/second and 200,000 returned records/month; Scale is $499/month for 25 requests/second and 5,000,000 records/month; Build Your Infra starts at $999/month and requires a discovery call.
Does BlitzAPI cover phone numbers outside the US?
No - the Unlimited Phone Numbers plan is documented as US coverage only.
Does BlitzAPI have an MCP server for AI agents?
We could not find one. Confirm with the vendor.
What integrations does BlitzAPI support?
The docs list orchestrators (n8n, Make, Zapier), data-ops tools (Clay, Airtable, Google Sheets), CRMs (HubSpot, Salesforce, Pipedrive), and outreach tools (Smartlead, Instantly, Lemlist), plus "any tool that can make an HTTP POST request."
Verify before you buy
- BlitzAPI pricing fields checked 2026-10-15. Scope: pricing fields only.
- GitHub repo URLs for the official Python/TypeScript SDKs
- Which of the two conflicting price sets on the pricing page is current
- Social media links (LinkedIn, X, YouTube, GitHub)
Need help setting it up?
This page tells you whether BlitzAPI fits. Cheetah builds and runs the system it goes into — enrichment, sequencing, CRM and the joins between them.
Book a call →The directory stays free. There is nothing gated behind this.