Free Document Signing API. Open Source. No Vendor Lock-In.

Your First Document Signing Request

Here's how simple the API is. A few lines of code and you're requesting signatures.

curl https://your-docuseal-server/api/documents \\
  -H 'X-API-Token: your_api_token' \\
  -H 'Content-Type: application/json' \\
  -d '{
    "document_base64": "JVBERi0xLjQK...",
    "signers": [
      {"email": "alice@example.com", "name": "Alice"}
    ],
    "send_email": true
  }'

You get back a JSON response with the signing link. Embed it in your app. That's it. No OAuth flows. No service account nonsense. No vendor lock-in complications.

Compare to DocuSign: 50+ pages of integration docs, service account setup, permission scopes, envelope schemas, and €0.50-€2 per request.

With DocuSeal: One endpoint. JSON in, JSON out. Free sandbox to test as much as you want.