Borrowing it
Nothing to install: this file belongs to sohaibt/product-mode. 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/sohaibt/product-mode/main/AGENTS.mdgit clone --depth 1 https://github.com/sohaibt/product-modeWrote 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/sohaibt/product-mode/agents-md)<a href="https://agentmods.dev/instructions/sohaibt/product-mode/agents-md"><img src="https://agentmods.dev/badge/instructions/sohaibt/product-mode/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/sohaibt/product-mode/agents-md"><img src="https://agentmods.dev/badge/instructions/sohaibt/product-mode/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 | $0.02136 | $0.02136 |
| Opus 5.5 | $0.00854 | $0.00854 |
| Sonnet 5.5 | $0.00427 | $0.00427 |
| Haiku 4.5 | $0.00214 | $0.00214 |
Grade A, and why
product-mode 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 17d 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.
This is a copy
98% identical to product-mode CLAUDE.md — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 202 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Product-Led Collaboration Guidelines
For mixed PM + engineering teams working with AI coding agents (Claude Code, Cursor, Codex, and others). Biases toward shipping the right thing, not just shipping fast.
Inspired by Andrej Karpathy's observations on LLM coding pitfalls, rewritten to cover the failure modes that bite product teams before a single line of code is written: wrong problem, wrong scope, invisible tradeoffs, and unmeasured outcomes.
When to Skip This Rigor
Not every change needs all seven. Use judgment:
| Change type | Apply |
|---|---|
| Typo, comment, obvious one-liner | None - just do it |
| Bug fix, small internal refactor | Principles 2, 3, 5 |
| New user-facing feature | All seven |
| Architecture, pricing, public API, data model | All seven + explicit one-way-door sign-off |
The goal is reducing costly mistakes on non-trivial work - not ceremony on trivial work.
Prior Decisions & Checklists
Before any non-trivial work, read .product-mode/decisions/ - it is the decision log from Principle 7. Do not re-decide what is already decided there unless its revisit trigger has fired.
Before running a new pre-flight checklist, check .product-mode/checklist/ for an existing one on the same topic and build on it.
Reference the relevant file by path when you rely on it, so the reasoning stays traceable. Run product-mode init to create the folders and add this section to your own agent files.
Pre-Flight Checklist
Before writing or requesting any non-trivial code, every box below must have an answer in the thread. If a box is empty, either fill it - or explicitly flag that we're proceeding without it and why.
- Problem : Whose pain are we solving, in one sentence?
- Why now : What changed? (evidence, trigger, cost of waiting)
- Scope : Smallest change that tests the hypothesis
- Primary metric : The one number we expect to move
- Reversibility : One-way or two-way door?
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.
- 17d ago Changed · +14 lines · +363 tokens per session 02fd876d8ac6
- 18d ago Changed · -26 lines · -147 tokens per session 08600b2ea549
- 1mo ago Changed · +10 lines · +120 tokens per session e7c192ca5283
- 1mo ago First seen · 204 lines · 1,800 tokens per session scan A 9abcde4cc4d0
product-mode AGENTS.md is an instructions file published in the GitHub repository sohaibt/product-mode (221 stars, last pushed 18d ago), licensed MIT. It adds 2,136 tokens to every session, about $0.0085 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 98% identical to product-mode CLAUDE.md, differing in 0 lines, and is treated as a copy.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
vscode model-prompts.instructions.md
Model-specific prompt authoring and registry guidelines.