Base URL
https://<your-workspace-domain>/api/public/v1
List available templates
curl "$BASE/templates"
Render a signature
curl -X POST "$BASE/signature" \
-H "Content-Type: application/json" \
-d '{
"templateId": "slate",
"fields": { "name": "Maya Okonkwo", "title": "Head of Revenue" },
"watermark": false
}'Authenticated calls
Create a key in your portal under API access, then send it as an x-api-key header. Keys are shown once — store them in your secret manager.
curl "$BASE/designs" -H "x-api-key: sk_live_..."