Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/sugarforever/01coder-agent-skills/codex-session-managernpx skills add sugarforever/01coder-agent-skills --skill codex-session-managergit clone --depth 1 https://github.com/sugarforever/01coder-agent-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/sugarforever/01coder-agent-skills/codex-session-manager)<a href="https://agentmods.dev/skills/sugarforever/01coder-agent-skills/codex-session-manager"><img src="https://agentmods.dev/badge/skills/sugarforever/01coder-agent-skills/codex-session-manager.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00104 | $0.01140 |
| Opus 5 | $0.00052 | $0.00570 |
| Sonnet 5 | $0.00021 | $0.00228 |
| Haiku 4.5 | $0.00010 | $0.00114 |
Grade A, and why
codex-session-manager scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 103 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Codex Session Manager
Overview
Codex stores session transcripts as JSONL files under ~/.codex/sessions/YYYY/MM/DD/*.jsonl. Archived sessions may also exist under ~/.codex/archived_sessions/*.jsonl. Use the bundled manager to list candidates or export sessions into Markdown transcripts with a digest, timeline, message text, and linked tool-call details.
Default output folder: ~/.codex/session-markdown. Tell the user before exporting there, and mention any custom output folder they requested.
Quick Start
Let the user's wording choose the mode when it is clear; otherwise ask them to choose before exporting:
- Full mode: export all matching sessions. Use this for archive, backup, broad search, or "convert all sessions" requests.
- Specific mode: list candidate sessions first, ask the user to pick one, then export only that session.
Run from any directory:
python3 /path/to/codex-session-manager/scripts/manage_codex_sessions.py
Useful options:
--mode full: export all matching sessions. This is the default.--mode specific --list-candidates: print a numbered candidate table and do not export.--mode specific --pick N: export the Nth candidate from the same filtered candidate list.--include-archived: also scan~/.codex/archived_sessions.--project <text>: only export date/project keys containing this text.--session <text>: only export sessions whose id or filename contains this text.--since YYYY-MM-DD: only export sessions modified on or after this date.--limit N: export the N most recently modified matching sessions.--include-tool-details-inline: embed full tool payloads in the main session Markdown instead of sidecar files.
Specific Mode Candidate Flow
Use this flow when the user wants one Codex session, is unsure which session they need, or asks to inspect recent sessions before converting.
- Run a candidate list command. Use
--limit 20by default unless the user asks for a different count.
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 5d ago First seen · 103 lines · 104 tokens per session scan A 693c9b4e5aff
codex-session-manager is a skill published in the GitHub repository sugarforever/01coder-agent-skills (133 stars, last pushed 2mo ago), licensed MIT. It adds 104 tokens to every session and 1,140 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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