Borrowing it
Nothing to install: this file belongs to thuandiep1707/codex-harness-javascript. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/thuandiep1707/codex-harness-javascript/main/AGENTS.mdgit clone --depth 1 https://github.com/thuandiep1707/codex-harness-javascriptWrote 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/thuandiep1707/codex-harness-javascript/agents-md)<a href="https://agentmods.dev/instructions/thuandiep1707/codex-harness-javascript/agents-md"><img src="https://agentmods.dev/badge/instructions/thuandiep1707/codex-harness-javascript/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.
<a href="https://agentmods.dev/instructions/thuandiep1707/codex-harness-javascript/agents-md"><img src="https://agentmods.dev/badge/instructions/thuandiep1707/codex-harness-javascript/agents-md.svg" alt="Reviewed on agentmods" width="80" 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 | $0.07185 | $0.07185 |
| Opus 5.5 | $0.02874 | $0.02874 |
| Sonnet 5.5 | $0.01437 | $0.01437 |
| Haiku 4.5 | $0.00719 | $0.00719 |
Grade A, and why
codex-harness-javascript 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 1mo 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 — 568 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Codex Multi-Agent Delivery System
This repository is the control project for a zero-setup Codex multi-agent workflow. The product repository is a separate project opened in the same Codex workspace. Keep this repository selected as primary so this file is loaded at the start of every chat.
System truths
Use exactly these durable sources of truth:
- Control repository: workflow entry points, agent behavior, internal capabilities, rules, protocols, and Codex configuration.
- Working project documentation: human-owned product truth at an explicit user-resolved target or the project's established documentation convention.
.docs/remains a valid/default surface when that is the project convention. - Jira: work state and durable execution context.
- Working project source: implementation truth.
Chat history is never workflow truth. Do not create .plans/, .progresses/, .agent/, or another runtime workflow database in the product repository.
Public workflow registry vs internal capabilities
Only packages under .agents/skills/ are user-facing $ entry points discoverable by Codex.
Current frontend workflows:
$frontend-delivery: run frontend work continuously from the smallest valid entry through analysis, Jira planning, specialist execution, testing, runtime cleanup, child-agent cleanup, and final acceptance.$frontend-planning: analyze and create/reconcile the Jira work graph, then stop before specialist execution.$docs-development-ready: create or complete the coordinated Product / Feature Requirement, Functional Specification, and UI / UX Specification package, review it as one unit, then finalize only after user approval.
Reusable agent knowledge lives under .agents/capabilities/ and is private to the owning agent. Internal capabilities must not be exposed as user-facing $ commands and must not be loaded globally.
An agent may load an internal capability only when:
- the capability path is allowlisted in that agent's
manifest.yaml; and - the current workflow/handoff trigger explicitly requires it.
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.
- 1mo ago Changed · +51 lines · +1,120 tokens per session 0e2e8f84e186
- 1mo ago Changed · +32 lines · -416 tokens per session 1cbebfc42d45
- 1mo ago Changed · +42 lines · +1,084 tokens per session b028ed6302fa
- 1mo ago Changed · -3 tokens per session 2a54d6a1d08d
- 1mo ago Changed · +64 lines · +902 tokens per session ff4ae53579e7
- 2mo ago Changed · +1 lines · +87 tokens per session 519553c4ff84
- 2mo ago First seen · 378 lines · 4,411 tokens per session scan A 62e9d03f0d2e
codex-harness-javascript AGENTS.md is an instructions file published in the GitHub repository thuandiep1707/codex-harness-javascript (8 stars, last pushed 1mo ago), licensed MIT. It adds 7,185 tokens to every session, about $0.0287 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 2026-08-31.
codex-harness-javascript AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| codex-harness-javascript AGENTS.mdthuandiep1707/codex-harness-javascript | Instructions file | 8 | 1mo ago | MIT | A | 7,185 | Codex, OpenCode |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | yesterday | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |