OpenAI built Chronicle to give Codex memory of your screen — macOS-only, ChatGPT-Pro-only, screenshots processed on OpenAI’s servers, readable by Codex alone. LUCI gives Codex the same recall from a memory that is 100% local, on Windows and Mac, and shared with every other agent you use.
Chronicle proved the idea: an agent that remembers your screen needs far less re-explaining. But Chronicle’s memory is an index distilled on OpenAI’s servers, available only to Codex, only on macOS, only for ChatGPT Pro subscribers — and anything its summarizer judged one-off is dropped for good.
LUCI takes the same job and does it locally, keeping the record underneath the index. Your screen and meeting audio are captured and indexed on your own machine. Install the official skills so Codex knows when to look them up — or connect over MCP if you want the tools without the skill files. The details Chronicle would have discarded are still there — searchable down to the exact moment.
Chronicle keeps durable summaries and drops the rest. LUCI keeps the searchable capture itself, so Codex can drill from "you were debugging auth" to the exact error text on screen.
Chronicle has no access to your microphone or system audio. LUCI transcribes both locally, so Codex can search what was said, not just what was shown.
Chronicle is a macOS-only research preview gated behind ChatGPT Pro. LUCI ships today on both platforms, free.
Chronicle sends selected frames to OpenAI’s servers to build memories. The LUCI pipeline runs end to end on your device, encrypted at rest.
Try asking
Install LUCI on your Mac or Windows machine and enable Screen Memory. Leave the app running.
In LUCI, open Settings → Agent access, tick Codex, and click Install. Or install from the official repo: https://github.com/Memories-ai-labs/Luci-skills
npx skills add Memories-ai-labs/Luci-skillsIf you want Codex to call LUCI as a tool without the skills, add the ready-made snippet to ~/.codex/config.toml.
[mcp_servers.luci]
url = "<url>"
http_headers = { "Authorization" = "Bearer <token>" }The two skill folders are ordinary files you own. Drop them where this tool reads and it finds them on the next session.
Chronicle distills your screen into durable memories on OpenAI’s servers and shows them only to Codex — macOS and ChatGPT Pro required, one-off details discarded at extraction time. LUCI keeps a full searchable record on your own machine, works on Windows and Mac, is free, and serves Codex plus any other agent through official skills (or MCP). Full comparison: LUCI vs Codex Chronicle.
Download LUCI, turn on Screen Memory, install the official skills.
Free on Mac and Windows.