ReactIn APIs

API Keys & List ID

ReactIn’s API requires a valid API key and a list ID (also called SmartList ID) to authenticate and route your requests.

Add leads via API

Want to send leads from another tool, webhook or CRM directly into ReactIn? Here’s how to do it using our simple and powerful Add Lead API.

Get Leads from ReactIn via API

Need to pull your enriched leads from a SmartList? This API lets you fetch leads securely and in real-time for use in CRMs, dashboards, or internal tools.

Interacting with the Unified Inbox via the API

ReactIn’s Unified Inbox brings every LinkedIn conversation generated by your campaigns into a single place.

Connect ReactIn to Claude (MCP)

ReactIn's MCP connector lets you drive your LinkedIn campaigns, lists, and leads directly from Claude, in natural language. You ask, Claude executes through your ReactIn…

Update leads via API

Need to change a lead's data after it was added? The Update Lead API lets you patch an existing lead in place, email, name, company, or custom variables, without creating a duplicate.

Track campaign events via API

Read the full outreach timeline of any campaign, invites sent, accepted, messages, replies and skips, programmatically, to sync outreach status into your CRM or build custom reporting.

Webhook payloads and how to identify a lead

The same webhook event can come from a campaign, an automation or a lead magnet, and the payload differs. Learn how to tell the sources apart and which id identifies a person across all of them.