WEBHOOKS

Keep your tools in sync.
React when the work changes.

Send signed Pipeline events to your app, CRM, or agent runtime. Choose the events your endpoint needs and inspect each delivery.

Event catalog Verify a delivery Create an endpoint

Subscribe to the right events.

Create an endpoint with an explicit set of event types. Check whether an event is available before subscribing.

Process each event once.

Delivery is at least once, and ordering is not guaranteed. Deduplicate with the event ID or webhook-id header.

Choose the event your app needs.

Payload version 2026-08-17. Available and planned events come from Pipeline’s shared contract.

campaign.createdPlanned

campaign.created payload

{
  "id": "7b60d0cb-b735-4a8c-9c30-4180ab1c98d5",
  "type": "campaign.created",
  "api_version": "2026-08-17",
  "timestamp": "2026-08-17T15:04:05.000Z",
  "workspace_id": "39dba13f-6246-4b14-a310-a6710aa53009",
  "data": {
    "object": {
      "id": "campaign_123",
      "name": "Founder outreach",
      "status": "draft"
    },
    "context": {
      "campaign_id": "campaign_123"
    },
    "actor": {
      "type": "system"
    }
  }
}

campaign.startedAvailable

campaign.started payload

{
  "id": "7b60d0cb-b735-4a8c-9c30-4180ab1c98d5",
  "type": "campaign.started",
  "api_version": "2026-08-17",
  "timestamp": "2026-08-17T15:04:05.000Z",
  "workspace_id": "39dba13f-6246-4b14-a310-a6710aa53009",
  "data": {
    "object": {
      "id": "campaign_123",
      "name": "Founder outreach",
      "status": "active"
    },
    "context": {
      "campaign_id": "campaign_123"
    },
    "actor": {
      "type": "system"
    }
  }
}

campaign.pausedAvailable

campaign.paused payload

{
  "id": "7b60d0cb-b735-4a8c-9c30-4180ab1c98d5",
  "type": "campaign.paused",
  "api_version": "2026-08-17",
  "timestamp": "2026-08-17T15:04:05.000Z",
  "workspace_id": "39dba13f-6246-4b14-a310-a6710aa53009",
  "data": {
    "object": {
      "id": "campaign_123",
      "name": "Founder outreach",
      "status": "paused"
    },
    "context": {
      "campaign_id": "campaign_123"
    },
    "actor": {
      "type": "system"
    }
  }
}

campaign.resumedAvailable

campaign.resumed payload

{
  "id": "7b60d0cb-b735-4a8c-9c30-4180ab1c98d5",
  "type": "campaign.resumed",
  "api_version": "2026-08-17",
  "timestamp": "2026-08-17T15:04:05.000Z",
  "workspace_id": "39dba13f-6246-4b14-a310-a6710aa53009",
  "data": {
    "object": {
      "id": "campaign_123",
      "name": "Founder outreach",
      "status": "active"
    },
    "context": {
      "campaign_id": "campaign_123"
    },
    "actor": {
      "type": "system"
    }
  }
}

campaign.completedAvailable

campaign.completed payload

{
  "id": "7b60d0cb-b735-4a8c-9c30-4180ab1c98d5",
  "type": "campaign.completed",
  "api_version": "2026-08-17",
  "timestamp": "2026-08-17T15:04:05.000Z",
  "workspace_id": "39dba13f-6246-4b14-a310-a6710aa53009",
  "data": {
    "object": {
      "id": "campaign_123",
      "name": "Founder outreach",
      "status": "completed"
    },
    "context": {
      "campaign_id": "campaign_123"
    },
    "actor": {
      "type": "system"
    }
  }
}

campaign.failedPlanned

campaign.failed payload

{
  "id": "7b60d0cb-b735-4a8c-9c30-4180ab1c98d5",
  "type": "campaign.failed",
  "api_version": "2026-08-17",
  "timestamp": "2026-08-17T15:04:05.000Z",
  "workspace_id": "39dba13f-6246-4b14-a310-a6710aa53009",
  "data": {
    "object": {
      "id": "campaign_123",
      "name": "Founder outreach",
      "status": "failed",
      "failure_code": "sender_unavailable"
    },
    "context": {
      "campaign_id": "campaign_123"
    },
    "actor": {
      "type": "system"
    }
  }
}

prospect.enrolledPlanned

prospect.enrolled payload

{
  "id": "7b60d0cb-b735-4a8c-9c30-4180ab1c98d5",
  "type": "prospect.enrolled",
  "api_version": "2026-08-17",
  "timestamp": "2026-08-17T15:04:05.000Z",
  "workspace_id": "39dba13f-6246-4b14-a310-a6710aa53009",
  "data": {
    "object": {
      "id": "prospect_123",
      "campaign_id": "campaign_123",
      "linkedin_url": "https://www.linkedin.com/in/example"
    },
    "context": {
      "campaign_id": "campaign_123"
    },
    "actor": {
      "type": "system"
    }
  }
}

linkedin.connection_request.sentPlanned

linkedin.connection_request.sent payload

{
  "id": "7b60d0cb-b735-4a8c-9c30-4180ab1c98d5",
  "type": "linkedin.connection_request.sent",
  "api_version": "2026-08-17",
  "timestamp": "2026-08-17T15:04:05.000Z",
  "workspace_id": "39dba13f-6246-4b14-a310-a6710aa53009",
  "data": {
    "object": {
      "id": "action_123",
      "action": "connection_request",
      "prospect_id": "prospect_123",
      "campaign_id": "campaign_123"
    },
    "context": {
      "campaign_id": "campaign_123"
    },
    "actor": {
      "type": "system"
    }
  }
}

linkedin.connection.acceptedPlanned

linkedin.connection.accepted payload

{
  "id": "7b60d0cb-b735-4a8c-9c30-4180ab1c98d5",
  "type": "linkedin.connection.accepted",
  "api_version": "2026-08-17",
  "timestamp": "2026-08-17T15:04:05.000Z",
  "workspace_id": "39dba13f-6246-4b14-a310-a6710aa53009",
  "data": {
    "object": {
      "id": "connection_123",
      "prospect_id": "prospect_123",
      "campaign_id": "campaign_123"
    },
    "context": {
      "campaign_id": "campaign_123"
    },
    "actor": {
      "type": "system"
    }
  }
}

linkedin.message.sentPlanned

linkedin.message.sent payload

{
  "id": "7b60d0cb-b735-4a8c-9c30-4180ab1c98d5",
  "type": "linkedin.message.sent",
  "api_version": "2026-08-17",
  "timestamp": "2026-08-17T15:04:05.000Z",
  "workspace_id": "39dba13f-6246-4b14-a310-a6710aa53009",
  "data": {
    "object": {
      "id": "action_124",
      "action": "message",
      "prospect_id": "prospect_123",
      "campaign_id": "campaign_123"
    },
    "context": {
      "campaign_id": "campaign_123"
    },
    "actor": {
      "type": "system"
    }
  }
}

linkedin.inmail.sentPlanned

linkedin.inmail.sent payload

{
  "id": "7b60d0cb-b735-4a8c-9c30-4180ab1c98d5",
  "type": "linkedin.inmail.sent",
  "api_version": "2026-08-17",
  "timestamp": "2026-08-17T15:04:05.000Z",
  "workspace_id": "39dba13f-6246-4b14-a310-a6710aa53009",
  "data": {
    "object": {
      "id": "action_125",
      "action": "inmail",
      "prospect_id": "prospect_123",
      "campaign_id": "campaign_123"
    },
    "context": {
      "campaign_id": "campaign_123"
    },
    "actor": {
      "type": "system"
    }
  }
}

linkedin.reply.receivedAvailable

linkedin.reply.received payload

{
  "id": "7b60d0cb-b735-4a8c-9c30-4180ab1c98d5",
  "type": "linkedin.reply.received",
  "api_version": "2026-08-17",
  "timestamp": "2026-08-17T15:04:05.000Z",
  "workspace_id": "39dba13f-6246-4b14-a310-a6710aa53009",
  "data": {
    "object": {
      "id": "reply_123",
      "prospect_id": "prospect_123",
      "conversation_id": "conversation_123",
      "body": "Interested. Can you send over times?",
      "body_truncated": false,
      "first_reply": true
    },
    "context": {
      "campaign_id": "campaign_123"
    },
    "actor": {
      "type": "system"
    }
  }
}

linkedin.action.failedPlanned

linkedin.action.failed payload

{
  "id": "7b60d0cb-b735-4a8c-9c30-4180ab1c98d5",
  "type": "linkedin.action.failed",
  "api_version": "2026-08-17",
  "timestamp": "2026-08-17T15:04:05.000Z",
  "workspace_id": "39dba13f-6246-4b14-a310-a6710aa53009",
  "data": {
    "object": {
      "id": "action_126",
      "action": "message",
      "prospect_id": "prospect_123",
      "campaign_id": "campaign_123",
      "error_code": "provider_rejected"
    },
    "context": {
      "campaign_id": "campaign_123"
    },
    "actor": {
      "type": "system"
    }
  }
}

linkedin.account.disconnectedPlanned

linkedin.account.disconnected payload

{
  "id": "7b60d0cb-b735-4a8c-9c30-4180ab1c98d5",
  "type": "linkedin.account.disconnected",
  "api_version": "2026-08-17",
  "timestamp": "2026-08-17T15:04:05.000Z",
  "workspace_id": "39dba13f-6246-4b14-a310-a6710aa53009",
  "data": {
    "object": {
      "id": "account_123",
      "name": "Founder account",
      "status": "disconnected",
      "reason": "credentials_expired"
    },
    "actor": {
      "type": "system"
    }
  }
}

linkedin.account.reconnectedPlanned

linkedin.account.reconnected payload

{
  "id": "7b60d0cb-b735-4a8c-9c30-4180ab1c98d5",
  "type": "linkedin.account.reconnected",
  "api_version": "2026-08-17",
  "timestamp": "2026-08-17T15:04:05.000Z",
  "workspace_id": "39dba13f-6246-4b14-a310-a6710aa53009",
  "data": {
    "object": {
      "id": "account_123",
      "name": "Founder account",
      "status": "connected"
    },
    "actor": {
      "type": "system"
    }
  }
}

reply.classifiedAvailable

reply.classified payload

{
  "id": "7b60d0cb-b735-4a8c-9c30-4180ab1c98d5",
  "type": "reply.classified",
  "api_version": "2026-08-17",
  "timestamp": "2026-08-17T15:04:05.000Z",
  "workspace_id": "39dba13f-6246-4b14-a310-a6710aa53009",
  "data": {
    "object": {
      "id": "classification_123",
      "conversation_id": "conversation_123",
      "prospect_id": "prospect_123",
      "classification": "interested"
    },
    "context": {
      "campaign_id": "campaign_123"
    },
    "actor": {
      "type": "system"
    }
  }
}

prospect.stage.changedAvailable

prospect.stage.changed payload

{
  "id": "7b60d0cb-b735-4a8c-9c30-4180ab1c98d5",
  "type": "prospect.stage.changed",
  "api_version": "2026-08-17",
  "timestamp": "2026-08-17T15:04:05.000Z",
  "workspace_id": "39dba13f-6246-4b14-a310-a6710aa53009",
  "data": {
    "object": {
      "id": "prospect_123",
      "stage": "meeting_booked"
    },
    "previous_attributes": {
      "stage": "interested"
    },
    "actor": {
      "type": "system"
    }
  }
}

meeting.bookedAvailable

meeting.booked payload

{
  "id": "7b60d0cb-b735-4a8c-9c30-4180ab1c98d5",
  "type": "meeting.booked",
  "api_version": "2026-08-17",
  "timestamp": "2026-08-17T15:04:05.000Z",
  "workspace_id": "39dba13f-6246-4b14-a310-a6710aa53009",
  "data": {
    "object": {
      "id": "meeting_123",
      "prospect_id": "prospect_123",
      "campaign_id": "campaign_123",
      "starts_at": "2026-08-20T14:00:00.000Z"
    },
    "actor": {
      "type": "system"
    }
  }
}

workflow.run.startedAvailable

workflow.run.started payload

{
  "id": "7b60d0cb-b735-4a8c-9c30-4180ab1c98d5",
  "type": "workflow.run.started",
  "api_version": "2026-08-17",
  "timestamp": "2026-08-17T15:04:05.000Z",
  "workspace_id": "39dba13f-6246-4b14-a310-a6710aa53009",
  "data": {
    "object": {
      "id": "run_123",
      "workflow_id": "workflow_123",
      "name": "ICP outbound",
      "status": "running"
    },
    "context": {
      "workflow_run_id": "run_123"
    },
    "actor": {
      "type": "system"
    }
  }
}

workflow.run.completedAvailable

workflow.run.completed payload

{
  "id": "7b60d0cb-b735-4a8c-9c30-4180ab1c98d5",
  "type": "workflow.run.completed",
  "api_version": "2026-08-17",
  "timestamp": "2026-08-17T15:04:05.000Z",
  "workspace_id": "39dba13f-6246-4b14-a310-a6710aa53009",
  "data": {
    "object": {
      "id": "run_123",
      "workflow_id": "workflow_123",
      "name": "ICP outbound",
      "status": "completed"
    },
    "context": {
      "workflow_run_id": "run_123"
    },
    "actor": {
      "type": "system"
    }
  }
}

workflow.run.failedAvailable

workflow.run.failed payload

{
  "id": "7b60d0cb-b735-4a8c-9c30-4180ab1c98d5",
  "type": "workflow.run.failed",
  "api_version": "2026-08-17",
  "timestamp": "2026-08-17T15:04:05.000Z",
  "workspace_id": "39dba13f-6246-4b14-a310-a6710aa53009",
  "data": {
    "object": {
      "id": "run_123",
      "workflow_id": "workflow_123",
      "name": "ICP outbound",
      "status": "failed"
    },
    "context": {
      "workflow_run_id": "run_123"
    },
    "actor": {
      "type": "system"
    }
  }
}

workflow.run.awaiting_approvalAvailable

workflow.run.awaiting_approval payload

{
  "id": "7b60d0cb-b735-4a8c-9c30-4180ab1c98d5",
  "type": "workflow.run.awaiting_approval",
  "api_version": "2026-08-17",
  "timestamp": "2026-08-17T15:04:05.000Z",
  "workspace_id": "39dba13f-6246-4b14-a310-a6710aa53009",
  "data": {
    "object": {
      "id": "run_123",
      "workflow_id": "workflow_123",
      "name": "ICP outbound",
      "status": "awaiting_approval"
    },
    "context": {
      "workflow_run_id": "run_123"
    },
    "actor": {
      "type": "system"
    }
  }
}

approval.requiredAvailable

approval.required payload

{
  "id": "7b60d0cb-b735-4a8c-9c30-4180ab1c98d5",
  "type": "approval.required",
  "api_version": "2026-08-17",
  "timestamp": "2026-08-17T15:04:05.000Z",
  "workspace_id": "39dba13f-6246-4b14-a310-a6710aa53009",
  "data": {
    "object": {
      "id": "approval_123",
      "subject_type": "workflow_run",
      "subject_id": "run_123",
      "status": "required"
    },
    "context": {
      "workflow_run_id": "run_123"
    },
    "actor": {
      "type": "system"
    }
  }
}

approval.resolvedAvailable

approval.resolved payload

{
  "id": "7b60d0cb-b735-4a8c-9c30-4180ab1c98d5",
  "type": "approval.resolved",
  "api_version": "2026-08-17",
  "timestamp": "2026-08-17T15:04:05.000Z",
  "workspace_id": "39dba13f-6246-4b14-a310-a6710aa53009",
  "data": {
    "object": {
      "id": "approval_123",
      "subject_type": "workflow_run",
      "subject_id": "run_123",
      "status": "approved"
    },
    "context": {
      "workflow_run_id": "run_123"
    },
    "actor": {
      "type": "system"
    }
  }
}

Verify before you process.

Verify the signature with your endpoint secret and the raw request body. Reject stale timestamps. Compare signatures in constant time.

Signed delivery headers

webhook-id: EVENT_ID
webhook-timestamp: UNIX_TIMESTAMP
webhook-signature: v1,SIGNATURE

Pipeline uses HMAC-SHA256 over id.timestamp.rawBody. Decode the endpoint secret after removing its whsec_ prefix. Accept a matching v1 signature within a five-minute timestamp window.

Make success clear.

Return a 2xx status to acknowledge a delivery. Requests time out after 15 seconds. Redirects count as failures. HTTP 410 pauses an endpoint.

Recover from a failed delivery.

Inspect deliveries before retrying. Manual redelivery requires an Idempotency-Key header so repeated requests do not queue the same work twice.

Inspect delivery history

Keep your tools in sync.React when the work changes.