I switch between Claude Code, Codex, and Gemini CLI depending on the day and the task. Each one is genuinely good. Each one also has zero idea what the other one knows.
I'd explain a decision to Claude Code — "we're using Postgres here because we need concurrent writes, don't suggest SQLite again" — and it'd remember, because it reads CLAUDE.md. Then I'd switch to Codex for the same repo and it would suggest SQLite. Again. Because nothing I told Claude Code ever made it into whatever context Codex was reading.
Multiply that by every "we tried X, it didn't work, don't suggest it again" conversation, and you start explaining the same three things to three different tools every week. That got old fast.
What I actually built
Mythicator is a CLI called mythicator. It does one thing: keeps a single memory file per repo, and pushes it out to whatever context file each AI tool already reads.
