A RESTful Integration for a Seamless Automation

With the fynk REST API, you can create documents from templates, read and update fields and metadata, list and filter templates and documents, download final signed PDF versions, and even sync account data. Every API call is securely authenticated via token and all actions are logged for auditing purposes.

In your fynk account, go to Settings → Integrations → API to create an API token, assign a role (e.g., Template Reader or Document Manager), and use it in every REST call via the HTTP Authorization header.

Each API token is scoped by role (e.g., read-only or write), can have an expiration date, and is tied to a specific API actor. All actions are recorded in the audit log to ensure compliance and traceability.

You can update existing documents via the API – for example, metadata, parties, or status. fynk automatically versions changes and records them in the audit log.

Yes – for documents in the final state (e.g., signed), the API provides a download endpoint to retrieve the final PDF.

Yes – as a REST API, it works with all programming languages that support HTTP requests (e.g., JavaScript, Python, Go, Java, PHP). You can find examples in the official documentation.

Yes – you can create multiple tokens simultaneously, each with its own role and validity period, e.g., separate tokens for test vs. production environments or different applications.

All endpoints, data models, authentication mechanisms, and example requests are available in the official API documentation at https://app.fynk.com/v1/docs#/