Documentation

CORS

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Published 2026-08-01. Current stable documentation.

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1.4.1
1.5
2.0

CORS

This recipe will help you to setup a Cross-Origin Resource Sharing pipe in your application.

First you need an amber project generated with Amber CLI or from scratch.

config/application.cr
Crystal
Amber::Server.configure do
  pipeline :api do
    plug Pipe::CORS.new
  end

routes :api do
# your routes here...
end
end

Also see pipelines.