How to generate B2B leads in Claude

Last updated: Oct 09, 2026

Go from a target market to named accounts, the buyers inside them and a first draft of the outreach without leaving the chat. Enable the Firecrawl connector and Claude can generate B2B leads from Firecrawl Alexandria, where Apollo and FullEnrich provide the B2B contact data.

Best for

  • Shortlisting target accounts by headcount, city or region, and the tools in their stack.
  • Locating the decision makers at a company by title while every result is still a free preview.
  • Flagging accounts worth contacting this week, for example ones with open roles.

Connector and data providers

Connector: the Firecrawl connector. Gives Claude access to Apollo and FullEnrich, with each call charged against your Firecrawl team's credits.

Data providers in Firecrawl Alexandria

ProviderToolWhat it adds to the list
ApolloCompany searchAccounts narrowed by employee count, location, keywords in the name and technologies in use.
ApolloPeople searchFree previews of the people in a given role at a domain or in a location, each flagged when an email is on record.
ApolloPerson matchReveals the work email, current title and job history of a person you chose. A miss isn't billed.
FullEnrichPeople searchContacts filtered by title, seniority, function, industry, company size and how long they've held the role.
FullEnrichWork emailThe most probable business address for someone, with a deliverability status, billed only on a hit.

Explore Firecrawl Alexandria data providers across categories

Starter prompt

Swap in your own market, then paste it into Claude:

Use Firecrawl to build a B2B lead list from Apollo and FullEnrich in
Firecrawl Alexandria. Tell me what each tool costs before running it, and
do the free searches before any paid ones.
 
1. Find 20 software companies in Austin with 11 to 50 employees that run
   on Stripe. List the name, domain and headcount.
2. At those companies, look for people titled Head of Finance, VP Finance
   or similar. Note who has an email on file, but hold off on revealing
   any emails.
3. When I've chosen a shortlist, get verified work emails and current
   titles for those people and nobody else.
 
Work contacts only. No personal emails or phone numbers.

Before you start

  • Link your Firecrawl team. Select Connect on the Firecrawl connector page. Claude hands you over to Firecrawl in the browser, where you log in or sign up for free, choose which team to use and grant access, with no API key to copy. Firecrawl in Claude covers the setup in more detail.
  • Toggle it on. In any chat, click +, pick Connectors and flip Firecrawl on. Every lookup bills to the team you linked.
  • Get FullEnrich's terms accepted. FullEnrich won't run until someone with admin rights in your Firecrawl organization agrees to them from the dashboard.

Limitations of using Claude for lead generation

Prospecting depends on current records about real people and companies, and a model on its own has neither, which creates five problems.

  1. Its knowledge stops at a cutoff. Claude learns from data up to a fixed cutoff, and Anthropic warns that a model may not know what happened after that point (Anthropic). A new VP of Sales hired since then, or a startup founded since, won't be in what Claude remembers.
  2. Missing records get filled with guesses. Anthropic acknowledges that Claude can occasionally give responses that are incorrect or misleading, which it calls hallucinating (Anthropic). A tidy table of companies and buyers can still contain people who don't work there.
  3. Contact records decay quickly. ZeroBounce's 2026 list decay report puts the yearly decay of an email list at 23% or more. Titles and employers in older training data have drifted further still.
  4. Lists need a lawful origin. The European Commission says that under the GDPR, whoever supplies a contact list has to be able to show it was collected lawfully and can be used for advertising, and must keep it current (European Commission). Names recalled by a model come with no such record.
  5. Business email has rules of its own. CAN-SPAM covers business-to-business messages too, with penalties of up to $53,088 for each email that breaks it (FTC). Claude will draft the message regardless, so adding the unsubscribe option and a postal address is your job.

How it works

Claude builds the list in four passes:

  • Firecrawl Alexandria: the set of data sources an agent reaches through Firecrawl. Firecrawl pays more than 100 official providers under license so their data can sit in it, next to indexes Firecrawl maintains for web pages, papers, developer docs and public-sector material. Firecrawl tested this on 845 tasks, keeping the model and prompts fixed and having an AI grade answers blind: agents that could use Firecrawl Alexandria earned answer-quality scores 21% above agents that had only built-in web tools.
  • Accounts: company searches in Apollo and FullEnrich cut the market down by headcount, location, industry and stack.
  • People, at no cost: Apollo's people search lists who holds the roles you sell into and whether an email exists, before any credits go out.
  • Contacts, for the shortlist only: Claude checks each tool's price, then reveals work emails just for the people you approve. Lookups that come back empty cost nothing.

To enrich records already in your CRM instead, see Firecrawl's lead enrichment use case.

Generating B2B leads in Claude with and without Firecrawl Alexandria

Claude by itselfClaude with Apollo and FullEnrich
Lead sourceTraining data and pages a web search turns upApollo and FullEnrich records, pulled at the moment you ask
Picking accountsWhatever you describe in wordsFilters on headcount, location, industry and tech stack
Reaching the buyerNames and titles that may be guessesPeople by title, seniority and company, showing where they work now
EmailsBuilt from naming patternsProvider-verified work emails with a status, revealed only for people you pick
Cost controlNot applicableFree people previews, and email lookups bill only on a hit
SourceNo trail to followApollo and FullEnrich, both licensed in Firecrawl Alexandria. More than 100 official providers there cover people, firms, markets, travel and public-sector data. Explore the catalog
Timing signalsWhatever news results appearEach account's job postings and company news from Apollo

Build your own lead generation workflow

Tailor the request to your sales motion. For outbound into one segment:

With Firecrawl, search FullEnrich for VP or Head of Marketing at US
software companies with 50 to 500 employees who began their current role
within the last six months. Show name, title, company and start date for
up to 12 people, and stop before looking up any emails.

For a fixed set of target accounts:

Use Firecrawl and Apollo's free people search to find who holds titles
like Head of Partnerships or Director of Partnerships at linear.app,
vercel.com and notion.so. Flag who has an email on file, and pull each
company's open job postings for partnership or sales roles.

Each one fixes who you're after and tells Claude to wait for your go-ahead before any paid step, which keeps the list tight and the bill small.

Take it further

Write outreach grounded in the data

Use Firecrawl to draft a three-sentence cold email for each person on my
shortlist that mentions their company's most recent job posting. Add an
unsubscribe line and a placeholder for our postal address.

Spot the accounts that are hiring

With Firecrawl, check which of these companies currently have open job
postings for sales or RevOps roles, and list the roles with links.

Fill in company details

Use Firecrawl to get each company's industry, headcount, headquarters and
main technologies from FullEnrich, and add them as columns to the table.

See the prices up front

With Firecrawl, which tools search companies and people for B2B
prospecting? Give me each one's price and how it charges.

What it costs

Searching for tools and reading their prices costs nothing. Credits come off your Firecrawl team's balance only when Claude runs a provider tool, and Firecrawl pricing lists what each plan includes.

StepTool and resultFirecrawl credits
Preview peopleApollo people search: who holds a role at an accountFree
Pick accountsApollo company search, for accounts filtered on headcount, place and tech stack30 per page
Reveal someoneApollo person match, returning a chosen contact's email, role and past jobs30 per matched person
List contactsFullEnrich people search, matching on role, level, sector and headcount5 per person returned
Get an emailFullEnrich work email, giving the most probable address and whether it's deliverable20 per email found
Check intentApollo job postings: the roles an account is hiring for30 per page

Claude tells you which tool it ran and how many credits that took.

[ Prospect lists in Claude ]

Connect Firecrawl and let Claude assemble your next B2B lead list. Previewing people with Apollo is free.

Related use cases

Coverage limits

  • Business contacts only. The prompts in this guide reveal work emails, and FullEnrich's terms prohibit marketing to personal addresses.
  • Some people have no email on record. Apollo's previews show who does, and a lookup that finds nothing isn't charged.
  • Compliance is yours. Consent, opt-out and anti-spam requirements vary by your country and your prospects', and the providers don't take them on.