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 instructions/jinxlzc/grok-codex-plugin/agents-mdgit clone --depth 1 https://github.com/jinxlzc/grok-codex-pluginWrote 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/instructions/jinxlzc/grok-codex-plugin/agents-md)<a href="https://agentmods.dev/instructions/jinxlzc/grok-codex-plugin/agents-md"><img src="https://agentmods.dev/badge/instructions/jinxlzc/grok-codex-plugin/agents-md.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 | $0.00098 | $0.00098 |
| Opus 5 | $0.00049 | $0.00049 |
| Sonnet 5 | $0.00020 | $0.00020 |
| Haiku 4.5 | $0.00010 | $0.00010 |
Grade A, and why
grok-codex-plugin AGENTS.md 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 4d 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.
What it actually says
grok-codex-plugin
Grok Build plugin that commands the local Codex CLI.
- Runtime lives in
plugins/codex/scripts/codex-companion.mjs. - Grok session transfer lives in
plugins/codex/scripts/lib/grok-session-transfer.mjs. - MCP is a thin stdio wrapper:
plugins/codex/scripts/mcp-server.mjs. - Do not add a second Codex invocation path.
- Tests:
npm test.
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.
- 4d ago First seen · 10 lines · 98 tokens per session scan A ad8b71e81e33
grok-codex-plugin AGENTS.md is an instructions file published in the GitHub repository jinxlzc/grok-codex-plugin (1 stars, last pushed 22d ago), licensed Apache-2.0. It adds 98 tokens to every session, 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 2026-08-31.
Other instructions, from other repositories
grok-keysmith AGENTS.md
AGENTS.md instructions for Jia-Ethan/grok-keysmith, covering repository agent guide, scope, release and external state, change boundaries and documentation rules.
pi-xai-oauth AGENTS.md
AGENTS.md instructions for BlockedPath/pi-xai-oauth, covering agents.md — ai agent operations manual for pi-xai-oauth, project overview, key commands (exact, copy-paste ready), architecture & boundaries (must / must not) and file structure & wayfinding.
grokbuild-proxy CLAUDE.md
Instructions for GreyGunG/grokbuild-proxy, covering grokbuild, 项目状态, 架构, 开发与验证 and 变更约束.
goal-engineering AGENTS.md
Instructions for cobusgreyling/goal-engineering, covering agents.md — goal engineering reference, project purpose, verification, goal discipline and deny list.
grok-subagent AGENTS.md
Instructions for Walvez/grok-subagent, covering agents.md, 项目定位, 怎么跑起来, 依赖：node.js 22+、已登录的官方 grok cli（/.grok/bin/grok 或 grok） and 安装后必须新建 codex 任务，旧会话不会热加载 skill/mcp.
grok-build-showcase AGENTS.md
Instructions for cobusgreyling/grok-build-showcase, covering agents.md — grok build rules for grok-build-showcase, coding standards, build, test & verification, git & version control and architecture notes.