code-is-cheap: Instructions file for Codex

AGENTS.md

code-is-cheap AGENTS.md is an instructions file for Codex, OpenCode from noho/code-is-cheap. It costs 464 tokens per session, scanned A, original, Apache-2.0.

A repository instruction file named AGENTS.md for the noho/code-is-cheap project. It tells coding agents how to create branches, request parallel reviews, handle findings, commit, push, and open pull requests.

In plain words
What is it for?
Use it to guide changes in that repository, including branch reuse, two independent reviews, accepted-finding fixes, commits, pushes, and pull-request creation.
Why use it?
It gives agents a defined contribution process, reducing the chance of editing the wrong branch or closing work without the required review and pull request steps.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions subagents; mentions Codex; $skill-name invocation.

This is noho/code-is-cheap's own configuration. It tells Codex and OpenCode how to work on code-is-cheap itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything code-is-cheap configures →

Reuse

Borrowing it

Nothing to install: this file belongs to noho/code-is-cheap. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/noho/code-is-cheap/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/noho/code-is-cheap

Made for: Codex, OpenCode.

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 code-is-cheap AGENTS.md

README.md
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Your own site
<a href="https://agentmods.dev/instructions/noho/code-is-cheap/agents-md"><img src="https://agentmods.dev/badge/instructions/noho/code-is-cheap/agents-md/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.

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Your own site · 80×15
<a href="https://agentmods.dev/instructions/noho/code-is-cheap/agents-md"><img src="https://agentmods.dev/badge/instructions/noho/code-is-cheap/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 464 This file is loaded in full into every session.
When invoked 464 The same file — it is already loaded in full.
Security scan A 0 findings. 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00464 $0.00464
Opus 5.5 $0.00186 $0.00186
Sonnet 5.5 $0.00093 $0.00093
Haiku 4.5 $0.00046 $0.00046

Measured 6d ago against content hash f5e3ec3826b7, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

code-is-cheap 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 6d 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.

AGENTS.md · 21 lines

What it actually says

Project development workflow

These instructions apply to development of this repository.

  1. Create a work branch before changing files; reuse the current work branch when continuing an unmerged PR.

  2. Use $sub-agents to dispatch gpt-6-sol through codex-agent-run (Codex runtime) for plan, implementation, and fixes.

  3. Use $sub-agents to dispatch two independent $deepreview reviews in parallel: mimo-flash through claude-agent-run (Claude runtime), and ds-flash through claude-agent-run (Claude runtime). If the ds-flash Claude runtime is unavailable (for example, due to authentication, package, or invocation permission failures), the controller may use codex-agent-run --provider ds-flash (Codex runtime) as the backup runtime for the same reviewer after recording the reason, preserving independent parallel review with mimo-flash.

  4. The controller checks the evidence, adjudicates findings, and dispatches accepted fixes to gpt-6-sol before closing the review loop.

  5. Commit as needed, push the work branch, and create a PR. The user merges it manually.

  6. After final closeout passes, remind the user to sync to live and record the applicable sync commands in the closeout artifact. Run the following commands from the repository checkout containing the approved changes, selecting the scripts needed for the changed components. Live deployment requires user authorization.

    ./scripts/sync-skills.sh       # Codex / Claude skills
    ./scripts/sync-agent-tools.sh  # Launchers, runners, and shared helpers
    ./scripts/sync-codex-agent.sh  # Codex profiles, catalogs, routes, and shim service
    

    Reload interactive launcher functions with source ~/.zshrc or open a new shell after deploying them; reopen Agent sessions to load updated skills. Runner callers do not need to source ~/.zshrc when the installed runner is already on PATH.

These provider/runtime pairs are the default review routes for this repository, with the ds-flash Codex runtime backup allowed under the conditions above. Explicit user instructions for a task take precedence.

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. 6d ago Changed · +87 tokens per session f5e3ec3826b7
  2. 17d ago Changed · +10 lines · +222 tokens per session 7589427df6bd
  3. 20d ago Changed · +13 tokens per session b474e46fc40d
  4. 27d ago First seen · 11 lines · 142 tokens per session scan A 68c136830b57

Subscribe to this mod's changes

code-is-cheap AGENTS.md is an instructions file published in the GitHub repository noho/code-is-cheap (94 stars, last pushed 7d ago), licensed Apache-2.0. It adds 464 tokens to every session, about $0.0019 per session on Opus 5.5. 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 2026-10-03.

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