Documentation drift used to be a huge problem for human developers. Waste their time. Now it can cause coding agents to take wrong actions, and even to ship the wrong change.
Previously boring documentation issues get to take on a whole new degree of importance because they can now affect when the wrong change gets shipped by a coding agent.
Software documentation tools used to sit beside the delivery process. They helped onboarding, audits, support, architecture reviews, and the occasional brave soul trying to understand why one module still talks SOAP. Coding agents move that documentation into the execution path. The words in AGENTS.md, CLAUDE.md, repo wikis, rubrics, runbooks, and generated summaries become operating instructions.
LangChain is making this capability explicit with OpenWiki, an open source agent and CLI for generating and maintaining repo documentation for coding agents. As documentation of repo knowledge for agents to execute commands on the repo, the repo documentation is now also the substrate for the agents.
Docs are part of the runtime now
