B2B data APIs for
GTM Engineers

Use BlitzAPI to create search, enrichment, validation, and signal workflows directly inside your GTM stack.

Get 1,000 free recordsContact us

Replace manual
GTM research

Search, enrich, validate, and route B2B data at scale
BlitzAPI gives you clean endpoints to build the workflow once, run it at scale, and push structured outputs into the tools your team already uses.
Create repeatable workflows for outbound, CRM enrichment, and routing.
Send clean company, contact, email, and signal data into your stack.
Talk to the team
Less manual work
Replace research, lookup, and enrichment tasks with API calls.
Cleaner GTM data
Structured outputs, ready for your CRM, outbound tools, and workflows.
Ready to scale
Run the same playbook across hundreds or thousands of accounts.

What GTM Engineers build with BlitzAPI

Workflows you design once and run on a schedule or on demand, on the same endpoints.

  • Use case

    TAM builders

    Map the accounts that fit your ICP, and rebuild the list whenever the definition changes.

  • Use case

    Decision-maker flows

    Use Waterfall ICP to find the right stakeholders inside each target account.

  • Use case

    CRM enrichment jobs

    Complete missing company, contact, email, phone, domain, and profile fields automatically.

  • Product

    Email validation checks

    Validate emails before sending, catch-all domains included, so only proven addresses reach a sequence.

  • Product

    Job signal engines

    Track hiring activity, extract job signals, and trigger account scoring or outbound actions.

  • Use case

    Data matching layers

    Resolve domains, company profiles, contact profiles, and matching keys across fragmented datasets.

The calls behind these workflows

Grouped by what they do, each with the job it takes in a GTM stack. One API key, structured JSON in and out.

Endpoints
08
Data families
04

Search & Discovery

  • POST /v2/search/companies Company Search API Turn ICP filters into an account list: industry, size, location, keywords, revenue, traffic.
  • POST /v2/search/people People Search API Pull the personas you target across a whole market in one query, ready to enrich.
  • POST /v2/search/waterfall-icp-keyword Waterfall ICP API Send a company and a title cascade, get the strongest available contact back.
  • POST /v2/company/tam-by-people TAM by People API Size a market by the people companies employ, one row per account.

Enrichment

  • POST /v2/enrichment/company Company Enrichment API Send a company LinkedIn URL, get its full profile back: domain, industry, size, headquarters.
  • POST /v2/enrichment/email Email Enrichment API Send a contact's LinkedIn URL, get a verified work email back, or Not Found.

Identity Resolution

  • POST /v2/enrichment/domain-to-linkedin Domain to LinkedIn API Send a website domain, get the company LinkedIn URL that Waterfall ICP and enrichment take as input.

Jobs Intelligence

  • POST /v2/jobs/company Jobs Signal API Send a company LinkedIn URL, get its live job postings back, filtered by title, location or posting date.

Workflow · four calls in sequence

From an ICP to verified contacts

One way to chain them from Clay, n8n or your own code: a market goes in, verified contacts at accounts that are hiring come out.

  1. Search & Discovery

    Company Search API

    POST /v2/search/companies

    Describe the market once: industry, size, location, keywords. Each company comes back with its LinkedIn URL.

    Passes on Target companies

  2. Jobs Intelligence

    Jobs Signal API

    POST /v2/jobs/company

    Pull each company's jobs, grouped by month, and keep the accounts hiring for the team you sell to.

    Passes on Accounts that are hiring

  3. Search & Discovery

    Waterfall ICP API

    POST /v2/search/waterfall-icp-keyword

    Run your title cascade on each account. The engine moves down a tier only when the one above comes back empty.

    Passes on Decision makers per account

  4. Enrichment

    Email Enrichment API

    POST /v2/enrichment/email

    Look up each decision maker's work email and keep the ones who come back with a verified address. The rest return Not Found.

    Delivers Verified contacts, ready to sequence

A data layer for GTM systems that need to move fast

Founder

“BlitzAPI helps GTM teams replace manual research with programmable data workflows. Search accounts, identify decision makers, enrich records, validate emails, and send clean data into your systems.”
Portrait of Antoine Blitz
Antoine Blitz
Founder at BlitzAPI

Data layer · Continuous

PROFILES550M+Maya ChenAcmeUSLéo MartinNorthwindFRPriya RaoGlobexGB

Data volume · Aggregate

DATA POINTS1B+

Plug BlitzAPI into your stack

“Use BlitzAPI as the API layer behind your Clay workflows, CRMs, internal tools, automations, and custom agents. High-volume playbooks, without per-record anxiety.”

GTM ENGINEERS

One API layer behind every workflow you ship, with no vendor to swap when the play changes.

API Docs
ONE API LAYER

Learn the method, step by step

GuideAgentic commerce: how AI agents find, buy and use B2B dataBlitzAPI × ZeroClick · built for agents to buyRead the guideGuideHow to find the right decision maker in every companyWaterfall ICP · a search that knows when to stopRead the guide

Frequently asked questions

How do I start building with BlitzAPI?

Create an account and you get 1,000 free records to test real workflows, no sales call required. Every endpoint is standard REST with structured JSON outputs, so you can run your first search or enrichment call in minutes.

Does BlitzAPI work with Clay, n8n, and custom agents?

Yes. BlitzAPI is the API layer behind Clay workflows, n8n and Make automations, CRMs, internal tools, and custom agents. Any system that can send an HTTP request can call the endpoints and route the structured outputs, for your own use. Redistributing the data or your API access through a marketplace or a third-party listing is outside what our Terms allow.

How fresh is the data behind these workflows?

Records are refreshed continuously through captured signals and recurring update cycles, and verified emails are re-tested against mail infrastructure at least every 30 days, so recurring workflows keep running on current data.

What kind of data does BlitzAPI provide?

BlitzAPI focuses on business-context B2B data: companies, professional profiles, work emails, and job postings. See our privacy policy for how data is processed, and contact us if your team has specific compliance requirements.

Data shouldn't be
the problem

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