You can extend Squirro by creating custom Pipelets. Typically, these are created by a python engineer.
These show up in the Custom section of the pipeline by default.
Additional Pipelets can be added using the plugin repository. For more details, see the Plugin Repository wiki page.
Pipelets are typically created by python engineers. For a step-by-step guide to creating pipelets, see the Pipelets Tutorial.
Squirro Scripts can be used anywhere in the pipelet, which is listed as a custom step when installed.