Settings → Integrations → Webhooks → "+ New webhook". Pick events + receiving URL + signing secret. Every event fires a POST with HMAC-SHA-256 signature in X-OmniMark-Signature.
Webhooks
Webhooks
Subscribe to 30+ event types: contact.created, deal.won, email.opened, sequence.replied, plan.changed.
April 1, 2026 8 min read
More from api docs
Reference
Authentication
POST /api/v1/auth/login → JWT bearer token. Send as Authorization: Bearer <token> on every request.
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CRMContacts CRUD
POST /api/v1/crm/contacts to create, GET /api/v1/crm/contacts/{id}, PATCH to update, DELETE to soft-archive.
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ReferenceRate limits
Default 100 req/min per org. Burst up to 200 for 30s. AI endpoints have their own token-based quota.
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