Help! Need feedback, built a way to visualize your Codex history
A developer has created a tool to visualize Codex history, initially built for Claude Code users. The tool, which now supports Codex as of v0.4.0, reads data from ~/.codex/sessions, including resumed sessions and sub-agents. It tracks tokens and commits similarly to how it functions for Claude. The developer is seeking feedback from the community, particularly on the new Codex support, as their own Codex history for testing is limited.
Why this oneUnlike previous tools that only provided usage counts, this new open-source tool offers detailed visualization of Codex history, including resumed sessions and sub-agents, starting with v0.4.0.
Time & source
Times shown in UTC
Display time zone: UTC
Local time zone unavailable; showing UTC.
PublishedOffset at this time: UTC+0Sep 12, 2026, 13:27 UTC
IngestedOffset at this time: UTC+0Sep 12, 2026, 14:01 UTC
- Published
- Sep 12, 2026, 13:27
- Ingested
- Sep 12, 2026, 14:01
- Source type
- Dev community
- Tier
- Community
- Source status
- Healthy
Tier is a per-source editorial setting, not a per-item score.
Discussion trend
The percentage is based on collected discussion signal, not new comments or independent people. The curve only compares the same topic across time.
I built this for Claude Code first, because that's what I use day to day. /stats told me how much I'd used it, never the thing I actually wanted to know:
So I made bough. It reads the session history already on your disk and draws it:
Codex support just landed in v0.4.0. It reads ~/.codex/sessions, handles resumed sessions and sub agents, and counts tokens and commits the same way it does for Claude.
That part is new and I have tested it against my own Codex history, which is not much. This is where I need help.