Apollo.io API

Sales

B2B sales intelligence — contacts, companies, and email sequences.

Apollo.io provides access to a database of 250M+ contacts. Find leads, enrich CRM data, and automate sales outreach with email sequences.

Details

Auth Type
API Key (api_key param)

Rate Limit
100 requests/minute

Pricing
Free: 50 credits/mo

API Key (api_key param)

Sign up at apollo.io and get your API key from Settings.

Get API Credentials

Getting Started

1. Try It Instantly
   Click "Try It" above to test the API in the playground

2. Add to Your Agent
   Click "Add to Agent" to get your API key and integrate

Common Use Cases

• Lead prospecting
• Contact enrichment
• Email sequences
• CRM integration
• Company research

💻 Code Examples

Get started quickly with these code examples in your favorite language

curl -X GET \
  'https://www.callio.dev/api/proxy/apollo/forward?target=https%3A%2F%2Fapi.apollo.io%2Fv1%2Fendpoint' \
  -H 'Authorization: Bearer YOUR_CALLIO_KEY' \
  -H 'Content-Type: application/json'

💡 Tip: Replace YOUR_CALLIO_KEY with your actual Callio API key from the dashboard.

Ready to integrate Apollo.io API?

Test endpoints live or generate your API key and start building in minutes.