codex

codex is an agent for coding agents from khadinakbarlabs/shopify-app-builder. It costs 0 tokens per session (380 once invoked), scanned A, original, MIT.

A Codex integration for a collection of Shopify development skills. Codex is an AI coding agent that can inspect a repository and help edit, review, and debug its files.

In plain words
What is it for?
Use it for repository-wide Shopify work, authentication and webhook reviews, billing and permission checks, GraphQL debugging, extension work, and pre-release verification.
Why use it?
It gives Codex Shopify-specific instructions for implementation, security checks, debugging, and release preparation.

Agent

Part of the shopify-app-builder plugin — 32 skills, 9 commands, 12 agents shipped together

Install

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.

agentmods
npx agentmods add agents/khadinakbarlabs/shopify-app-builder/codex
Clone the repo
git clone --depth 1 https://github.com/khadinakbarlabs/shopify-app-builder

Or install shopify-app-builder, the plugin that ships this one along with the rest of its 32 skills, 9 commands, 12 agents.

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.

agentmods badge for codex

README.md
[![agentmods](https://agentmods.dev/badge/agents/khadinakbarlabs/shopify-app-builder/codex.svg)](https://agentmods.dev/agents/khadinakbarlabs/shopify-app-builder/codex)
Your own site
<a href="https://agentmods.dev/agents/khadinakbarlabs/shopify-app-builder/codex"><img src="https://agentmods.dev/badge/agents/khadinakbarlabs/shopify-app-builder/codex.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 380 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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.

ModelPer sessionOnce invoked
Fable 5 $0.00000 $0.00380
Opus 5 $0.00000 $0.00190
Sonnet 5 $0.00000 $0.00076
Haiku 4.5 $0.00000 $0.00038

Measured 3d ago against content hash e1484004029f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

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 3d 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.

docs/agents/codex.md · 48 lines

What it actually says

Codex guide

Codex receives the 32 portable skills through the native Codex plugin manifest. Claude-specific slash commands and specialist-agent definitions are not presented as native Codex components.

Install

codex plugin marketplace add khadinakbarlabs/shopify-app-builder
codex plugin add shopify-app-builder@shopify-app-builder

Portable fallback:

npx skills add khadinakbarlabs/shopify-app-builder --skill '*' --agent codex --copy --yes

Best use cases

  • Repository-wide Shopify implementation and refactoring with file-level verification.
  • Security-sensitive authentication, webhook, billing, and scope audits.
  • Debugging GraphQL, CLI, extension, and embedded-app failures from terminal evidence.
  • Pre-release checks where builds, tests, source inspection, and live-surface verification must be kept distinct.

Operating guidelines

  • Name using-shopify-app-builder on the first broad Shopify request, or name a focused skill directly.
  • Ask Codex to inspect the repository before selecting framework- or version-specific advice.
  • Preserve unrelated dirty-worktree changes and require focused tests for edits.
  • Keep deployment, Partner Dashboard, App Store submission, billing, and advertising actions behind explicit authorization.
  • Use official Shopify documentation for time-sensitive API and platform claims.

Example prompts

Use using-shopify-app-builder to route this request, then fix our webhook HMAC verification and test it.
Use built-for-shopify-standards to audit this app; report blockers before changing files.
Use admin-graphql to replace this REST product sync with a cost-aware GraphQL flow.

Verify

codex plugin list

Confirm shopify-app-builder is installed, start a new task, and ask Codex to identify the relevant skills for an OAuth loop.

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.

  1. 3d ago First seen · 48 lines · 0 tokens per session scan A e1484004029f

Subscribe to this mod's changes

codex is an agent published in the GitHub repository khadinakbarlabs/shopify-app-builder (1 stars, last pushed 24d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 380 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 2026-08-31.