REST API for E-Signature & Document Automation
Embed document signing into any CRM, ERP, or app via REST API or MCP server. Automate signing flows, receive webhooks, and maintain a tamper-proof blockchain audit trail.
What you can build with the Chaindoc e-signature API
Extend your products with document automation, embedded signing, and real-time webhook notifications.
Document creation automation
Generate contracts from templates with merge fields, conditional logic, and multi-party routing via API.
Embedded electronic signature
Add signing inside your app or website — signers complete it without a Chaindoc account.
Workflow automation
Multi-step signing flows with sequential or parallel routing, deadlines, and custom actions per stage.
System integration
Connect any HTTP system — CRM, ERP, internal tools. Webhooks push event notifications to your endpoint.
MCP Server for AI agents
AI agents run the full flow via Model Context Protocol: document creation, signing, and invoice payment.
Build with Chaindoc API
Full REST API and MCP server reference with code samples. Ready-to-use SDKs for Node.js, Python, and PHP.
Why build on the Chaindoc API
Production-grade infrastructure with end-to-end security, high SLA, and configuration depth that fits any existing team workflow.
How to integrate the e-signature API
Three steps to get from signup to your first e-signature API call.
Create an account
Sign up or log in to Chaindoc. API keys are generated from the Settings → API section for accounts with API access enabled.
Generate an API key
Create an API key from the Settings panel and store it securely. This key authenticates every request your application makes to Chaindoc. Keep separate staging and production keys.
Make your first API call
Use the REST endpoints directly or install the Node.js/TypeScript Server SDK. The documentation covers every endpoint with working code examples, including a complete webhook setup walkthrough.
Chaindoc + Pipedrive
Sign documents and collect e-signatures directly from Pipedrive deals. Contract status syncs back automatically — no switching tabs, no copy-paste.
- Sign deals and contracts without leaving Pipedrive
- Automatic document status sync
- Blockchain-verified signatures
Start integrating the e-signature API today
Connect the Chaindoc API to your application and automate document creation, signing, and management. First API call in under an hour.
Common questions about the Chaindoc API
Key answers about API integration, authentication, webhooks, and SDK usage. More details on our support page.
Tips for secure integration of e-signature APIs
Learn how to properly and securely use electronic signatures through the Chaindoc API to keep your documents legally valid and audit-ready.