Automate Onboarding
Generate personalized forms for each new hire from your HR system.
✦ Developer API
Build forms and signatures programmatically.
Full REST API with OpenAPI spec. Create forms, manage questions, generate recipient links, and trigger webhooks — all from your code.
A few lines of code. That is all it takes.
Create forms, add questions, and generate shareable links — all from your codebase.
/api/v1/forms
const response = await fetch("https://formalingo.com/api/v1/forms", {
method: "POST",
headers: {
"Authorization": "Bearer fl_key_...",
"Content-Type": "application/json",
},
body: JSON.stringify({
title: "Customer Feedback",
status: "draft",
}),
})
const form = await response.json()
// { id: "frm_a1b2c3", title: "Customer Feedback", ... }Everything you need to build on Formalingo.
REST API
Full REST API
Create forms, add questions and sections, manage recipients, handle documents and signatures. Every feature in the dashboard is available via API.
OpenAPI
OpenAPI specification
Auto-generated OpenAPI spec at /api/v1/. Import into Postman, generate client libraries, or browse interactive documentation.
API Keys
Scoped API keys
Generate API keys with granular permissions: read:forms, write:forms, read:responses, and more. Set expiration dates for security.
Webhooks
Webhook events
Subscribe to form submissions, document signings, and more. HMAC-signed payloads for security. Delivery log for debugging.
API for every use case
From onboarding automation to embedded forms to data sync — if you can code it, you can build it.
Embed in Apps
Create forms on-the-fly and embed them in your product.
Sync Data
Use webhooks to push form responses to your CRM, database, or data warehouse.
Custom Workflows
Chain API calls with conditional logic to build complex automation pipelines.
Common questions
Everything you need to know about the Formalingo developer API.
Still have questions? Chat with our team