Generate documents from templates, extract data with AI, and collect signatures backed by a cryptographic seal, an RFC 3161 timestamp, and a full audit trail.
Platform
Create documents from reusable templates with dynamic merge fields. Populate them with data from your systems via API, or generate in bulk from CSV or JSON.
AI field detection reads your PDFs and returns structured data, with OCR for scanned documents and pre-built schemas for invoices, contracts, and tax forms.
Legally binding digital signatures with RFC 3161 timestamps. Multi-signer workflows with sequential ordering. Complete audit trails and certificates of completion.
For developers
Install the SDK, create a document, and send it for signing. The entire flow takes five lines of TypeScript. Webhooks notify you when signers complete their fields.
npm install @korala/sdkkorala.documents.create({ ... })document.completed → your callbackimport Korala from "@korala/sdk";
const korala = new Korala({ apiKey: process.env.KORALA_KEY });
// Create a document from a template and send for signing
const document = await korala.documents.create({
templateId: "tmpl_nda_2024",
data: {
clientName: "Acme Corp",
effectiveDate: "2024-03-15",
},
signers: [
{ name: "Jane Smith", email: "[email protected]", role: "client" },
{ name: "John Doe", email: "[email protected]", role: "sender" },
],
});
// Korala emails each signer a signing link
console.log(document.id); // "doc_a1b2c3d4"
console.log(document.status); // "pending"Trust & Security
Each signature includes a cryptographic certificate and RFC 3161 timestamp. An immutable audit trail records each action.
Platform-issued certificates backed by a trusted CA chain.
DigiCert TSA provides long-term validity proof for each signature.
The audit trail records each view, signature, and download with IP, timestamp, and user agent.
Data processing agreements, EU hosting options, and right-to-erasure support.
Integration
RESTful API with HMAC authentication. TypeScript SDK with full type safety. Webhooks for real-time event notifications. Embeddable React components for signing UIs.
Use Korala for straightforward signing, or pay for API platform usage across documents, fills, signing, and orchestration.
Signing plans for customer-facing and internal signature workflows
For light signing volume
For simple signing workflows
For production signing
For high-volume signing
Start on the free tier without a credit card, and go from sign-up to a first signed document in under five minutes.