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Welcome to the new Captain Data API v1, which allows you to get qualified, fresh and high-quality data about people and companies. If you encounter any issues using this API, feel free to reach out at support@captaindata.com.

Get your API Key

Go to Developer Settings to get your API key and start using the API.

Use our documentation MCP

Add Captain Data Documentation to your AI assistant or IDE thanks to our Model Context Protocol server. Best advices directly from the documentation into your IDE !

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Authentication

To authorize requests, you need to add the following header X-API-Key: <your_api_key> to all API requests (case insensitive). Here’s an example of a request to the API:
All subsequent examples will use this header as part of the request. To get your API Key, go to Developer Settings and copy the appropriate values.
Each user of your workspace has their own unique API Key that is tied to their account. API Keys are not shared across the workspace.

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Playground

Each API endpoint has an interactive playground where you can test requests directly.

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Pagination

Some endpoints return paginated results. To handle pagination the best possible way, we’ve got you covered with a simple and efficient mechanism and a full guide to explain it in the Handle Pagination documentation.

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Credit costs

Each endpoint shows its credit cost at the top of the page. See Credit costs for the full pricing model.

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Rate Limits

The v1 API is rate limited by your subscription plan (requests per second and per minute). See Rate Limits for plan tiers and how to handle 429 responses.

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Error Reference

For handling errors, check out our Error Reference documentation which covers all HTTP status codes and how to handle them.

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Have Questions?

If you’re exploring our doc you can also ask your AI tool thanks to our MCP (Model Context Protocol).