Developer FAQs

Overview

The following FAQs provide answers to common questions about Apollo API, MCP, CLI, and marketplace integrations.

• Which Apollo developer tool should I use?
• How do I create an Apollo API key?
• How do I build an integration with Apollo?
• Can I test Apollo API to make sure my key works?
• What can I do with Apollo API?
• What API functionality is included in my Apollo plan? How do credits work with Apollo API?
• Can I track my team's API usage?
• Do you have reference docs that specify endpoint parameters and limitations?
• What does this API error mean?
• Can Apollo developer tools perform actions I can't perform in Apollo?

How do I create an Apollo API key?

Check out Create API Keys to create your first API key. You must be an admin for your Apollo account or be assigned the necessary permission profile to create API keys.

Which Apollo developer tool should I use?

Apollo offers several developer tools depending on what you're building:

• Apollo API: Build custom integrations, automate workflows, enrich data, manage records, and connect Apollo with your own systems.
• Apollo MCP: Connect Apollo with AI tools that support the Model Context Protocol (MCP).
• Apollo CLI: Set up, authenticate, and work with Apollo from your local development environment.
• Apollo Marketplace: Submit and distribute integrations for Apollo customers.

If you're building an integration for mutual Apollo users, review How do I build an integration with Apollo?.

How do I build an integration with Apollo?

Apollo is excited that you want to offer an integration to mutual users!

• You can sign up here to start exploring and building since all Apollo plans include access to our API.
• To make API requests on behalf of Apollo users, you need to implement the OAuth 2.0 authorization flow when building your integration.
• To have Apollo list your integration on the Marketplace, you should review the requirements and submit an application.

To get in touch with the Apollo Partnerships team, please fill out the form at the bottom of this page.

📘

Data Licensing

Integrations for the purpose of sharing/exposing/reselling data to non-Apollo users would require a custom contract with Apollo. Please fill out the form at the bottom of this page to get in touch with Apollo Partnerships and confirm whether you may qualify.

Can I test Apollo API to make sure my key works?

Yes! Apollo shows how to test your API key. Follow the same logic to test any API endpoint using your preferred method.

What can I do with Apollo API?

Use cases for Apollo API include:

• Build integrations: Integrate Apollo's data and features in your own products and workflows. Use OAuth 2.0 to request permission to access Apollo data on behalf of mutual users.
• Enrich data: Use enrichment endpoints to supplement people and organization data, either one record at a time or in bulk.
• Find people: Use the People API Search endpoint to find prospects based on filters like job title, location, seniority, and more.

There's lots more you can build with Apollo API. For more examples, check out Capabilities. To start building your own workflows, jump into the API reference docs.

What API functionality is included in my Apollo plan? How do credits work with Apollo API?

All pricing plans include at least basic access to the Apollo API, but more advanced functionality is only available on certain plans. Check out Apollo API pricing and credits for more details.

Can I track my team's API usage?

Yes! Apollo's developer dashboard makes it easy to track your team's API usage and determine how many credits you've consumed.

Do you have reference docs that specify endpoint parameters and limitations?

Yes! Apollo provides API reference docs for its endpoints here.

What does this API error mean?

Apollo provides status codes for example responses in the API reference docs. Check out Status Codes and Errors to learn more.

Can Apollo developer tools perform actions I can't perform in Apollo?

No. Apollo developer tools follow your Apollo permissions, plan access, and credit availability. If your Apollo account can't access a feature, perform an action, or use credit-consuming data, developer tools like Apollo API, MCP, and CLI can't bypass those limits.