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 agents/sstraus/tuicommander/codexgit clone --depth 1 https://github.com/sstraus/tuicommanderWhat 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 | $0.00000 | $0.03317 |
| Opus 5 | $0.00000 | $0.01658 |
| Sonnet 5 | $0.00000 | $0.00663 |
| Haiku 4.5 | $0.00000 | $0.00332 |
Grade A, and why
codex 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 2d 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 — 348 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Codex CLI — UI Layout Reference
Agent-specific layout reference for Codex CLI (OpenAI). See agent-ui-analysis.md for shared concepts.
Observed version: v0.116.0 (2026-04-19), re-audited on v0.146.0 (2026-08-02)
Rendering engine: Ink (React for terminals)
Rendering approach: ANSI absolute positioning (\033[row;colH) + scroll regions
Layout Anatomy
Codex uses a fundamentally different approach from Claude Code:
- No separator-framed prompt box — uses background color instead
- Absolute cursor positioning —
\033[12;2H(row 12, col 2) - Terminal scroll regions —
\033[12;41rto define scrollable content area - Reverse index —
\033Mto scroll content upward
[agent output with • bullet prefix]
[empty line]
← dark background (rgb 57,57,57) starts here
› [user input] (prompt, bold ›, dark bg)
(dark bg continues)
(dark bg continues)
gpt-5.4 high · 100% left · ~/project (status line, dim, normal bg)
Real-world Examples (live session, 2026-03-21)
Startup banner
╭────────────────────────────────────────────╮
│ >_ OpenAI Codex (v0.116.0) │
│ │
│ model: gpt-5.4 high /model to change │
│ directory: ~/Gits/personal/tuicommander │
╰────────────────────────────────────────────╯
Tip: Use /mcp to list configured MCP tools.
Idle (waiting for input)
› Summarize recent commits (ghost text, dim)
gpt-5.4 high · 100% left · ~/Gits/personal/tuicommander
After tool execution (simple file create)
› create a file called /tmp/codex-test.txt with "hello"
• Creating /tmp/codex-test.txt with the requested contents.
• Added /tmp/codex-test.txt (+1 -0)
1 +hello
───────────────────────────────────────────────────────────────────────────────
• Created /tmp/codex-test.txt with hello.
› Summarize recent commits
gpt-5.4 high · 98% left · ~/Gits/personal/tuicommander
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.
- 2d ago First seen · 348 lines · 0 tokens per session scan A b70d37b8092a
codex is an agent published in the GitHub repository sstraus/tuicommander (123 stars, last pushed 5d ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 3,317 tokens. 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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