Packets & envelopes
HTTP API
Versioned resources for templates, packets, recipients, and status.
- Create packets from templates
- Attach ordered documents
- Idempotent send operations
- Scoped service credentials
Developers
Connect packets into your workflow.
Create packets from your systems, embed signing, and listen for completion over signed webhooks—no proprietary SDK required.
In-product signing
Embedded sessions
Host sender prep or recipient signing inside your existing portal.
- Short-lived session tokens
- Mobile-ready signer UI
- Ordered multi-document flow
- No iframe SDK lock-in
Lifecycle events
Webhooks
Push packet and envelope events back into your systems.
- HMAC-signed deliveries
- Packet completed events
- Decline / void notifications
- Replay-safe event IDs
Start with the HTTP quickstart in docs, then map packet completion into your own workflow.
Ready to send your next packet?
Put every related document in one send—with a signing flow people finish.