Small analyzer example: https://cs.chromium.org/chromium/infra/go/src/infra/tricium/functions/spacey/

There is not yet detailed, tested documentation about creating an analyzer, but this is one of the next major goals for the Tricium project.

A simple analyzer will generally be an executable that takes a list of files to process (i.e. files in the CL) as input and produces a list of comments to add into those files. The analyzer could check out other files in the repo and use those as input too.