Astro Info

Astro                    v6.1.0
Vite                     v7.3.1
Node                     v24.14.0
System                   Linux (x64)
Package Manager          npm
Output                   static
Adapter                  @astrojs/netlify (v7.0.5)
Integrations             none

If this issue only occurs in one browser, which browser is a problem?

All

Describe the Bug

Since upgrading to Astro 6, Astro Actions no longer work with @astrojs/netlify adapter when output is set to 'static'.

The build and dev server fail with:

[ERROR] [astro:actions] An unhandled error occurred while running the "astro:routes:resolved" hook
[ActionsWithoutServerOutputError] A server is required to create callable backend functions. To deploy routes to a server, add an adapter to your Astro config and configure your route for on-demand rendering

Changing output to 'server' resolves the issue — however, this was not required in Astro 5, where Actions worked fine with the default static output mode and the Netlify adapter.

This appears to be a breaking change / regression.

I had a similar issue with the netlify adapter: when using server:defer there was a problem on the netlify server with server islands (#16049 ).
The fix was a simple change in order of execution by the netlify adapter. I suspect a similar issue here.

What's the expected result?

The output "static" config should suffice to use Astro Actions with the netlify adapter.

Link to Minimal Reproducible Example

https://github.com/PanRoR/astro-server-island-netlify

Participation

• I am willing to submit a pull request for this issue.