Integrations

Connect your toolkit with the tools you already use.
Receive HTTP POST payloads when events happen in your account. Each endpoint has a signing secret you can use to verify the request.
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Payload format
POST https://your-endpoint.com/webhook Content-Type: application/json x-webhook-event: invoice.paid x-webhook-signature: sha256=<hmac> { "event": "invoice.paid", "sentAt": "2026-05-01T12:00:00.000Z", "organizationId": "org_…", "data": { … } }
Contractors Toolkit β€” Free Cost Calculator, Invoice Builder & Job Tracker