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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
Full Docs
Step 1: Save your provider key

This is NOT your Callio key. Enter the API key from the provider's dashboard (e.g. The API key from the provider's dashboard).

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://callio.app/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?

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