What is codex-architect?

An agent specialist for configuring Codex CLI, OpenAI's command-line coding assistant, in a repository.

Use it to create or maintain Codex settings, hooks, skills, slash commands, delegated agents, MCP safeguards, and AGENTS.md guidance.

It helps organize Codex configuration and safety controls instead of treating them as ad hoc project files.

codex-architect — Agent for Claude Code and Codex by terrene-foundatio

Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo

git clone --depth 1 https://github.com/terrene-foundation/kailash-coc-claude-py

agentmods

npx agentmods add agents/terrene-foundation/kailash-coc-claude-py/codex-architect

Made for: Claude Code, Codex.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/agents/terrene-foundation/kailash-coc-claude-py/codex-architect/github.svg)](https://agentmods.dev/agents/terrene-foundation/kailash-coc-claude-py/codex-architect)

Your own site

<a href="https://agentmods.dev/agents/terrene-foundation/kailash-coc-claude-py/codex-architect"><img src="https://agentmods.dev/badge/agents/terrene-foundation/kailash-coc-claude-py/codex-architect/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/agents/terrene-foundation/kailash-coc-claude-py/codex-architect"><img src="https://agentmods.dev/badge/agents/terrene-foundation/kailash-coc-claude-py/codex-architect.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 32 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 4,852 The whole file, excluding the scripts and references it only reads on demand.

Security scan B 1 finding. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

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	$0.00032	$0.04852
Opus 5	$0.00016	$0.02426
Sonnet 5	$0.00006	$0.00970
Haiku 4.5	$0.00003	$0.00485

Measured 5d ago against content hash 490bac264766, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade B, and why

codex-architect scanned grade B with 1 finding 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.

Reads agent configuration directoriesmediumAgent snooping

.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.

| MCP servers | Native — `~/.codex/config.toml` `[mcp_servers.*]` blocks | [developers.openai.com/codex/config-advanced] |

.claude/agents/codex-architect.md · 203 lines

How it starts

The opening of the file, as written. The whole thing — 203 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Codex CLI Architecture Specialist

Peer to cc-architect and gemini-architect. Owns the Codex-facing substrate of every COC-enabled repo: .codex/ config tree (repo-local + user-global at ~/.codex/), .claude/codex-mcp-guard/ MCP server, .claude/hooks/*.js shim runtime, emitted AGENTS.md baseline context, and Codex-native hooks / prompts / skills.

Verified capability envelope (2026-04-22 research, Phase J1): Codex has a rich native config surface — the legacy "MCP-guard-is-the-only-enforcement-option" framing from Phase D was wrong. Codex has real hooks, skills, custom slash commands, and subagent delegation; the MCP guard remains load-bearing only for non-Bash tool enforcement (see Native Primitives table below).

Ownership Matrix (spec v6 §6.1.5)

OWNER:

.codex/**, .codex-plugin/**, .claude/codex-mcp-guard/** — Codex config + MCP guardrail companion
.claude/codex-templates/bin/** — unified Codex phase dispatcher (bin/coc) emitted to <USE>/bin/coc by coc-sync Step 6.6; replaces deprecated /prompts:<phase> invocation surface upstream (OpenAI Codex CLI 0.128+ per openai/codex#9848 + #385)
.claude/hooks/*.js (top-level, shim runtime) — Codex-native via .codex/hooks.json hook registration; MCP-guard fallback for non-Bash tools (see "Hooks coverage" below)
~/.codex/skills/<name>/SKILL.md (user-global) or .codex/skills/<name>/SKILL.md (repo-local) — native progressive-disclosure skills
~/.codex/prompts/<name>.md (user-global only — repo-local .codex/prompts/ is not discovered since Codex CLI 0.128+ per openai/codex#9848) — historical custom slash commands, deprecated by OpenAI in favor of skills 2026-05-28 (issue #385). The canonical Codex invocation path is now the bin/coc <phase> dispatcher (see .claude/codex-templates/bin/README.md); codex-architect still emits .codex/prompts/ content as documentation but that invocation surface no longer works in synced consumers.

CONSUMER (read-only at emit time):

Read the full file on GitHub · 203 lines

Changes

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 · 203 lines · 32 tokens per session scan B 490bac264766

Subscribe to this mod's changes

codex-architect is an agent published in the GitHub repository terrene-foundation/kailash-coc-claude-py (12 stars, last pushed 21d ago), licensed Apache-2.0. It adds 32 tokens to every session and 4,852 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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