Apollo

API

B2B contact database API for finding and enriching people and companies

Price: Free tier, then paid
Access: API key

About

Sales intelligence platform with an API over 240M+ contacts and 30M+ companies, plus CRM records, deals and email sequences. Your Apollo plan decides which endpoints you can call, the rate limits and the credit cost; enrichment uses credits, people search does not.

What you can do with it

Search for prospects by job title, seniority and location
Enrich a person or a company from an email address, name or domain
Add contacts to sequences and update accounts and deals from your own code

Get started

Sign up for Apollo with a work email address
Create an API key under Settings > Integrations > API Keys
Send it in the x-api-key header

Example

curl -X POST "https://api.apollo.io/api/v1/mixed_people/api_search?person_titles[]=sales%20director&person_locations[]=California%2C%20US&per_page=5" \
  -H "Content-Type: application/json" \
  -H "Cache-Control: no-cache" \
  -H "x-api-key: $APOLLO_API_KEY"

Details

Hosting: Hosted service
Available in: Worldwide
MCP server: Remote