Documenso

Platform

Open-source e-signatures with signing envelopes, embedding and APIs

Price: Free core and limited Cloud API tier
Access: Team-scoped API token

About

Cloud or self-hosted signing service for envelopes, recipients, signature fields and embedded signing. Use API v2 envelopes for new integrations; v1 is deprecated. Cloud has a small free API tier. Self-hosting needs infrastructure and a signing certificate.

What you can do with it

Send signing envelopes and track completion through webhooks
Embed an electronic signing flow inside your application
Self-host the signing service and manage recipients and fields through APIs

Get started

Create a Cloud team or deploy your own signing instance
Generate a team-scoped token in Team Settings, API Tokens
Use v2 envelope endpoints with the raw token in Authorization

Example

curl https://app.documenso.com/api/v2/envelope \
  -H "Authorization: $DOCUMENSO_API_KEY"

Details

Hosting: Hosted service, Self-hosted
Available in: Worldwide
Official SDKs: JavaScript/TypeScript, Python, Go
MCP server: None