claude-codex-settings is a collection of configurations and reusable extensions for Claude Code, OpenAI Codex, Cursor, and related coding tools. Developers use its skills, commands, hooks, agents, plugins, and MCP servers to shape coding-agent workflows and connect alternative model APIs. The catalogue entries are components of this collection that can be installed into supported coding tools.
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/fcakyon/claude-codex-settings/simplifynpx skills add fcakyon/claude-codex-settings --skill simplifygit clone --depth 1 https://github.com/fcakyon/claude-codex-settingsWrote 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/fcakyon/claude-codex-settings/simplify)<a href="https://agentmods.dev/skills/fcakyon/claude-codex-settings/simplify"><img src="https://agentmods.dev/badge/skills/fcakyon/claude-codex-settings/simplify.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 5.1 | $0.00097 | $0.00910 |
| Opus 5 | $0.00048 | $0.00455 |
| Sonnet 5 | $0.00019 | $0.00182 |
| Haiku 4.5 | $0.00010 | $0.00091 |
Grade A, and why
simplify 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 — 66 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Simplify
/simplify → 4 cleanup agents in parallel → apply the fixes
You are improving the quality of the changed code, not hunting for bugs. Review it for reuse, simplification, efficiency, and altitude issues, then fix what you find. Do not look for correctness bugs, that is what /code-review is for.
Explicit commit bypass
If the user explicitly asks to commit while skipping simplify, skip the review phases below:
- State that simplify will be skipped for one commit and normal Git hooks will still run.
- Run this exact command from the worktree:
echo simplify-guard:bypass
- Commit normally without
--no-verify.
Never infer permission to bypass from the size, urgency, or type of change. The user must explicitly name simplify when asking to skip it.
Phase 0 — Gather the diff
Run git diff @{upstream}...HEAD (or git diff main...HEAD / git diff HEAD~1 if there's no upstream) to get the unified diff under review. If there are uncommitted changes, or the range diff is empty, also run git diff HEAD and include the working-tree changes in scope, the review often runs before the commit. If a PR number, branch name, or file path was passed as an argument, review that target instead. Treat this diff as the review scope.
Phase 1 — Review (4 cleanup agents in parallel)
Run 4 distinct reviews, one for each angle below. Launch four independent agents concurrently when capacity allows. If fewer than four slots are available, run the remaining angles in the primary agent or in later waves. Never omit or combine an angle. Pass each agent the diff and its assigned angle. Each returns its findings with file, line, a one-line summary, and the concrete cost (what is duplicated, wasted, or harder to maintain).
Reuse
Flag new code that re-implements something the codebase already has. Grep shared/utility modules and files adjacent to the change, and name the existing helper to call instead.
Simplification
Flag unnecessary complexity the diff adds: redundant or derivable state, copy-paste with slight variation, deep nesting, dead code left behind. Name the simpler form that does the same job.
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 · 66 lines · 97 tokens per session scan A 6a8c985397cd
simplify is a skill published in the GitHub repository fcakyon/claude-codex-settings (1,127 stars, last pushed yesterday), licensed Apache-2.0. It adds 97 tokens to every session and 910 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 2026-09-03.
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