There is a compaction routing plugin, as well as a general OAI compatibility plugin that simulates some of their harness features (ie. code_mode/batching tools)

There is a compaction routing plugin, as well as a general OAI compatibility plugin that simulates some of their harness features (ie. code_mode/batching tools) that also includes their compaction. That said, from reading the pi subreddit I don't see people referencing these much.