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.
| Plan | Price | Included | Notable |
|---|---|---|---|
| Unlimited Leads | $399/month | 380M+ contacts, 60M+ companies, 5 requests/second | Waterfall ICP, Company Search, Employee Finder |
| Unlimited Email | $499/month | 62M+ verified emails, 97% accuracy, 5 requests/second | Everything in Unlimited Leads, Unlimited Email finder |
| Unlimited Phone Numbers | $599/month | +40M mobile phone numbers, US coverage only, 5 requests/second | Everything in Unlimited Email, Unlimited Phone Numbers |
Checked 2026-08-07 against their pricing page. Vendors change pricing without notice.
BlitzAPI 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.
Growth 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.
The 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.
No 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'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.
Flat monthly subscriptions rather than per-request billing: Unlimited Leads at $399/mo, Unlimited Email at $499/mo, and Unlimited Phone Numbers at $599/mo, each unlocking more endpoints. Note: the vendor's own pricing page also rendered a second, conflicting set of figures for the same tiers in the excerpt we retrieved ($49/$99/$2389); we could not resolve which is current.
No - the Unlimited Phone Numbers plan is documented as US coverage only.
We could not find one. Confirm with the vendor.
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."
This page tells you whether BlitzAPI fits. Cheetah builds and runs the system it goes into — enrichment, sequencing, CRM and the joins between them.
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