API Keys & List ID

To use the ReactIn API (whether to add leads or extract enriched data), you need:

1. A SmartList of type ReactIn API

2. The API code snippet auto-generated by ReactIn

3. Your organization ID and the associated list ID

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🔑 How to get your API key (no need to request it)

ReactIn automatically generates your API key when you create a special SmartList.

✅ Steps:

1. Go to your ReactIn dashboard

2. Create a new SmartList

3. In the list type dropdown, select “ReactIn API”

   

4. Once the list is created, a code block will appear — it includes:

   • Your API key (already injected in the Authorization header)

   

   • The correct endpoint, including your organizationId and listId

⚠️ Treat this key as a secret. Never expose it in frontend code or public repos.

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📋 How to get your Organization ID & List ID

Each organization has a unique ID. You can get it the same way you did for the API Key:

There are two ways to retrieve your listId:

• It’s embedded directly in the URL of your SmartList:

  https://app.reactin.io/[OrganizationName]/lists/[listId]
  

• It also appears in the endpoint URL provided in the code snippet when you create the ReactIn API list:

  

You’ll need this listId to push or extract leads via the API.

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✅ Your API is ready to use

As soon as your ReactIn API SmartList is created, you’re ready to:

• Push leads to that list via POST

• Extract enriched leads from it via GET

No manual setup, no API key request needed.

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💡 Pro tip: Securely store your API key and regularly rotate it—this keeps your integration safe and reliable.

Ready to move on?
👉 Next Step: Add Leads via API →