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codex-trace

v0.1.15

Published

Local web UI for inspecting Codex session traces, tool calls, and subagents.

Vulnerabilities

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Links

Git

Maintainers

hughlee824hughlee824

Keywords

codextracejsonlsessionsobservabilityclilocal-first

Readme

codex-trace

Local web UI for inspecting Codex session traces.

codex-trace indexes Codex JSONL sessions from your machine and opens a browser UI for reviewing user messages, assistant responses, tool calls, raw events, and subagent parent/child traces. It is local-first: it reads local files and does not upload session data anywhere.

Install

npm install -g codex-trace

Requires Node.js 22.11.0 or newer.

Quick Start

codex-trace serve

Then open:

http://127.0.0.1:17345

By default, codex-trace reads:

~/.codex/sessions
~/.codex/session_index.jsonl
~/.codex/logs_2.sqlite

It writes its own index under:

~/.codex-trace

Commands

codex-trace serve
codex-trace reindex
codex-trace doctor
codex-trace update

serve starts the local HTTP UI, indexes historical sessions, and tails new JSONL events.

reindex rebuilds the SQLite index from session files.

doctor checks whether the sessions directory, index path, and optional Codex log database are readable.

update updates the global npm installation with npm install -g codex-trace@latest.

Options

serve, reindex, and doctor accept the same path options:

codex-trace serve \
  --sessions ~/.codex/sessions \
  --session-index ~/.codex/session_index.jsonl \
  --logs ~/.codex/logs_2.sqlite \
  --trace-home ~/.codex-trace \
  --index ~/.codex-trace/index.sqlite \
  --live-state ~/.codex-trace/live-state.json \
  --port 17345

UI

  • Session gallery with search.
  • Timeline view grouped around messages and raw events.
  • Tool inspector for function calls, shell results, patch metadata, and failures.
  • Subagent view with parent/child navigation.
  • Live stream for appended session events.
  • Raw JSON expansion for individual events.

Privacy

codex-trace is designed for local inspection. It does not send session data to a remote service. The web server binds to 127.0.0.1 by default.

The UI redacts common secret-like values in normalized previews, but raw event expansion can reveal original local session content. Treat the local web UI as sensitive if your Codex sessions include private code, prompts, credentials, customer data, or logs.

Development

npm test
npm run build
npm run serve
npm pack --dry-run

The published npm package runs compiled JavaScript from dist/. Local development scripts run the TypeScript source through Node's --experimental-strip-types flag, so the project requires Node 22.11.0 or newer.

License

Apache-2.0. See LICENSE.