Codex Session Manager

What it does

When your agent uses it

• Converting hard-to-read Codex JSONL logs into Markdown
• Backing up or archiving all local Codex sessions
• Finding one recent Codex session and exporting only that one
• Summarizing the tool-call history of a past Codex session

Example prompts

• “List my 20 most recent Codex sessions so I can pick one to export.”
• “Export all Codex sessions for the billing-api project to Markdown, archived ones included.”
• “Summarize which tools the Codex session about the login bug called.”

Requirements

• Python 3
• Local Codex session data under ~/.codex

Workflow steps

4 steps, taken from the first numbered list in SKILL.md.

1. 1Run a candidate list command. Use --limit 20 by default unless the user asks for a different count.
2. 2If the user gave a date, session id fragment, or archive hint, pass it through the same filters
3. 3Present the numbered candidate rows to the user. The candidate table includes modified time, date/project key, short session id, cwd, and…
4. 4After the user chooses a number, rerun with the exact same filters and --pick N.

What it can do on your machine

Read from SKILL.md and the folder at commit e51fb6e. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  Ships 1 file in scripts/ (Python), which the agent can run.

  Shell commands in SKILL.md call:

  • python3

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  No URLs in SKILL.md.

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names no API keys, tokens, secrets or passwords.

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Codex Session Manager loads about 1.2k tokens when it runs. Until then it costs about 120 tokens; SKILL.md has 559 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~120

When it runs · the whole SKILL.md, loaded when a task matches

~1.2k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

The full file from sugarforever/01coder-agent-skills at commit e51fb6e, republished under its MIT licence (© sugarforever). 559 words, ~1,242 tokens.

name

codex-session-manager

description

Manage local Codex session transcripts, including listing candidate sessions, exporting full or selected sessions to organized Markdown, inspecting archived sessions, and summarizing tool-call history. Use when the user asks to scan, parse, archive, inspect, recover, summarize, manage, or convert Codex sessions, `~/.codex/sessions` data, `~/.codex/archived_sessions` data, `.jsonl` transcripts, tool-call history, or hard-to-read Codex conversation logs.

python3 /path/to/codex-session-manager/scripts/manage_codex_sessions.py

python3 /path/to/codex-session-manager/scripts/manage_codex_sessions.py \
  --mode specific \
  --list-candidates \
  --limit 20

python3 /path/to/codex-session-manager/scripts/manage_codex_sessions.py \
  --mode specific \
  --list-candidates \
  --since 2026-06-01 \
  --include-archived \
  --limit 20

~/.codex/session-markdown/
├── index.md
└── <date-or-archive-key>/
    ├── index.md
    ├── <session-id>.md
    └── tool-details/
        └── <session-id>.tools.md

© sugarforever, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 2 other files (scripts) in skills/codex-session-manager of sugarforever/01coder-agent-skills.

• SKILL.md
• agents/openai.yaml
• scripts/manage_codex_sessions.py

Open the folder on GitHubat commit e51fb6e