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Flask-Cors 1.3.0

A Flask extension adding a decorator for CORS support

Latest Version: 3.0.3

Flask-CORS is a simple extension to Flask allowing you to support cross origin resource sharing (CORS) using a simple decorator.


Install the extension with using pip, or easy_install.

$ pip install flask-cors


This extension exposes a simple decorator to decorate flask routes with. Simply add @cross_origin() below a call to Flask’s @app.route(..) incanation to accept the default options and allow CORS on a given route.

Simple Usage

@cross_origin() # allow all origins all methods.
def helloWorld():
  return "Hello, cross-origin-world!"

Using defaults

Alternatively, setting your application’s CORS_ORIGINS configuration property will

app.config['CORS_ORIGINS'] = ['Foo', 'Bar']
@cross_origin() # will return CORS headers for origins 'Foo' and 'Bar'
def helloWorld():
  return "Hello, cross-origin-world!"

For a full list of options, please see the full documentation


A simple set of tests is included in To run, install nose, and simply invoke nosetests or run python to exercise the tests.


Questions, comments or improvements? Please create an issue on Github, tweet at [@wcdolphin]( or send me an email.

File Type Py Version Uploaded on Size
Flask-Cors-1.3.0.tar.gz (md5) Source 2014-04-22 9KB