Your Apollo.io API key lets you programmatically search contacts, enrich company data, and manage outreach sequences. Here's how to find it.
Step 1: Open API Settings
- Log in to app.apollo.io
- Click Settings (gear icon)
- Click Integrations in the left sidebar
- Find API and click Connect
- Click API Keys
Step 2: Create an API Key
- Click Create New Key
- Enter a name for the key (e.g., "My Integration")
- Add a description (optional)
- Select the APIs you want to enable
- Click Create API Key
Important: Copy the API key immediately. You won't be able to see it again after leaving this page.
What Can You Do with the Apollo API?
- Search people: Find contacts by job title, company, location, and more
- Search organizations: Find companies by industry, size, revenue, and more
- Enrich contacts: Get full contact details including email and phone
- Enrich companies: Get company details including funding, tech stack, and employee count
- Manage sequences: Add contacts to your outreach sequences
Troubleshooting
"Invalid API key" error
- Make sure you copied the complete API key
- Verify the key hasn't been revoked in Apollo settings
- Check that your Apollo subscription includes API access
"Permission denied" errors
- Ensure the API key has the necessary APIs enabled
- Verify your Apollo user has admin or appropriate permissions
Automate Your Apollo Workflows
Once you have your API key, you can connect Apollo to Miniloop to automate lead enrichment, contact research, and outreach sequences using natural language. Just describe what you want to accomplish, and Miniloop handles the rest.
Frequently Asked Questions
Do I need a paid Apollo plan for API access?
Yes, API access requires a paid Apollo plan. Check your subscription details in Apollo settings to confirm API access is included.
What are Apollo credits?
Apollo uses a credit system for enrichment and contact reveals. Each API action that reveals new contact information consumes credits from your Apollo account.
Can I limit what the API can access?
Yes, when creating the API key you can select which APIs to enable. Only enable the APIs you need for your integration.
How do I revoke an API key?
Go to Settings > Integrations > API > API Keys in Apollo and delete the key you want to revoke.