Where are Claude Code session logs stored on macOS?

Claude Code stores JSONL conversation logs and session transcripts locally in ~/.claude/projects/ on macOS. You can open this directory by running 'open ~/.claude/projects/' in your terminal.

Where are OpenAI Codex session transcripts saved on macOS?

OpenAI Codex CLI session rollout logs and history are saved in ~/.codex/sessions/ and ~/.codex/history.jsonl on your local disk. You can open this directory with 'open ~/.codex/sessions/' in your terminal.

Does this tool upload my transcripts or proprietary code to any server?

No. The viewer runs 100% locally in your browser sandbox using client-side JavaScript. No prompts, source code, or tool outputs are ever transmitted over the network.

What file formats and agents does this viewer support?

The tool supports Claude Code (transcript.jsonl), OpenAI Codex (rollout-*.jsonl, history.jsonl), ChatGPT conversation exports, Alpaca/fine-tuning instruction pairs, and standard multi-turn JSON/JSONL transcripts.

How do I resume a past Claude Code or Codex session in my terminal?

Run 'claude --resume' to pick from recent sessions, or 'claude --resume ' to jump directly into a specific session. For fast global search across all past sessions and 1-click terminal resumption, use L2Cache for Mac.

AI AGENT DEVELOPER TOOL

Claude Code & Codex Session Log Viewer

Inspect, filter, and analyze multi-turn Claude Code & Codex CLI session transcripts (transcript.jsonl) in a clean chat interface. 100% private & in-browser.

⚡

Run as Standalone Desktop App

Install directly to your Mac Dock or download as a 100% offline standalone HTML app.

A 📁 Pick Claude & Codex Folders (Zero Upload)

Choose your ~/.claude, ~/.codex, or workspace folders. Both are saved locally and can be refreshed in 1-click:

B 📋 1-Click Clipboard Paste

Copy log text or run the terminal one-liner below, then click to load instantly:

C ⚡ Terminal Quick Copy One-Liner

Copies your latest Claude Code or Codex session directly to your clipboard:

📋 cat $(ls -t ~/.claude/... | head -n1) | pbcopy

⚡ Want live floating session tracking in macOS? L2Cache for Mac automatically monitors Claude Code & Codex sessions in your menu bar with 1-click terminal resumption.

Get L2Cache ($4.99)

📂

Drag & Drop Claude or Codex transcript.jsonl files or folders here

Indexes Claude Code transcripts, OpenAI Codex memories, and Antigravity logs into one unified index.

⚡ Unified Agent Index: 0 0 total turns indexed

Filter Agent:

Frequently Asked Questions

❓ Where does Claude Code save its session history on macOS?

Claude Code stores all conversation logs as JSON Lines files in ~/.claude/projects/<project-name>/transcript.jsonl. Run open ~/.claude/projects/ in your Mac terminal to open the folder directly in Finder.

❓ Where are OpenAI Codex session rollout logs saved on macOS?

OpenAI Codex saves session rollout files and history in ~/.codex/sessions/ and ~/.codex/history.jsonl. Run open ~/.codex/sessions/ in your terminal to view your past rollout session logs.

❓ What log formats and AI agents are supported?

This tool natively parses Claude Code (transcript.jsonl), OpenAI Codex (rollout-*.jsonl), ChatGPT conversation exports, Alpaca/fine-tuning Q&A pairs, and standard multi-turn AI developer logs.

❓ Is it safe to drop proprietary company code logs into this viewer?

Yes, 100%. This tool operates completely in-browser on your local machine using vanilla JavaScript. No logs, prompts, or tool outputs are sent over the network. You can verify this by running the page in Airplane Mode.

❓ How can I search past Claude Code & Codex sessions natively on Mac?

L2Cache for Mac automatically indexes your local ~/.claude/projects/ and ~/.codex/sessions/ in real time, giving you global hotkey access (⌥ + Space), fast FTS5 search across all turns, and 1-click terminal resumption.