Released 2026-07-03. Call your playground server functions from outside FlowFn.

External server-function API. Call a playground's Server-tab functions from another system over authenticated HTTP — not just from your own page with flowfn.server.call. Authenticate with your App's x-app-code + x-api-key (the same credentials as the workflow API), address a function by its own rotatable invocation code, and call it with a real HTTP verb (GET / POST / PUT / PATCH / DELETE). The function receives ctx.method and ctx.query, and its arguments come from the JSON body (POST/PUT/PATCH) or the URL query (GET/DELETE). It's off by default: enable it per playground and it must be included in your plan. The in-page flowfn.server.call path is unchanged and remains first-party only. See Call server functions from outside FlowFn.

v3.11.0