This is a basic plugin skeleton that you can use as a basis for your own OctoPrint plugin.

You can copy the files to a folder of your choice, or just clone this repository, renaming it in the process. Then modify setup.py to fit your plugin, rename octoprint_skeleton accordingly and finally implement your plugin under octoprint_<plugin identifier>.

Clone your repository into a new development directory and rename octoprint_skeleton:

git clone https://github.com/OctoPrint/OctoPrint-PluginSkeleton OctoPrint-MyNewPlugin
cd OctoPrint-MyNewPlugin
mv octoprint_skeleton octoprint_mynewplugin

Modify setup.py's plugin_<xyz> settings so that they match your plugin, e.g.:

plugin_identifier = "mynewplugin"
plugin_name = "OctoPrint-MyNewPlugin"
plugin_version = "1.0"
plugin_description = "Awesome plugin that does something"
plugin_author = "You"
plugin_author_email = "[email protected]"
plugin_url = "https://github.com/you/OctoPrint-MyNewPlugin"

Then implement your plugin under octoprint_mynewplugin (don't forget to adjust __init__.py!), e.g.:

# coding=utf-8
from __future__ import absolute_import

import octoprint.plugin

class HelloWorldPlugin(octoprint.plugin.StartupPlugin):
    def on_after_startup(self):
        self._logger.info("Hello World!")
        
__plugin_name__ = "Hello World"
__plugin_implementation__ = HelloWorldPlugin()

Test it (e.g. via python setup.py develop). If everything works, write a nice README.md, replacing the existing one. Commit your code, then push it to your plugin's repository (this assumes you already created it on Github as you/OctoPrint-MyNewPlugin), e.g.:

git commit -a -m "Initial commit of MyNewPlugin"
git remote set-url origin [email protected]:you/OctoPrint-MyNewPlugin.git
git push -u origin master

Congratulations, you are now the proud maintainer of a new OctoPrint plugin! :) Don't forget to add an entry to the wiki once it's suitable for general consumption, so that others may find it!