Integrations
Built to connect
Seal is API-first from day one. Build document signing into your product, automate workflows with webhooks, or let AI agents handle it through MCP.
REST API
Full CRUD for documents, recipients, templates, and signatures. Typed responses, OpenAPI spec, and scoped API keys for secure programmatic access.
Read the docsWebhooks
Real-time notifications for every document event — sent, viewed, signed, completed, declined. HMAC-SHA256 signed payloads with automatic retries.
Read the docsMCP Server
AI-native integration for Claude, GPT, and other agents. Create documents, manage recipients, and check signing status from any MCP-compatible assistant.
Read the docs
Payments powered by Stripe
Collect payments alongside signatures. Attach a payment request to any document and recipients pay with Stripe's secure checkout before or after signing. No separate invoicing tool needed.
Ready to build?
Get started with the API in minutes. Create an account, generate an API key, and send your first document.