> ## Documentation Index
> Fetch the complete documentation index at: https://staging.docs.flowsign.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Changelog

> What has changed in FlowSign.

<Update label="September 2026" description="Public API v1">
  ## REST API, webhooks and developer docs

  * **Public API v1.** Bearer API keys (`fsk_` prefix) created from **Settings > API keys**. Endpoints for workspaces, packages (list, create, get, act on, delete) and templates (list, create, get, update, delete, instantiate). Requests act in one workspace per call via the `X-Workspace-Id` header. See the [developer quickstart](/developers).
  * **Webhooks.** Register HTTPS endpoints from **Settings > Webhooks** or `POST /api/v1/webhooks`. Nine package and session events, HMAC-SHA256 signatures, automatic retries with exponential backoff, and a per-endpoint delivery log. See [Webhooks](/webhooks/overview).
  * **This documentation site**, including the interactive API reference generated from the OpenAPI spec.
  * **Dynamic documents are labelled Experimental.** The dynamic document editor, the Standard or Dynamic choice when uploading, and the Dynamic badge on document rows now carry an **Experimental** chip. See [Release labels](/release-labels).
</Update>