Borrowing it
Nothing to install: this file belongs to painhardcore/pstack. 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/painhardcore/pstack/master/AGENTS.mdgit clone --depth 1 https://github.com/painhardcore/pstackWrote 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/painhardcore/pstack/agents-md)<a href="https://agentmods.dev/instructions/painhardcore/pstack/agents-md"><img src="https://agentmods.dev/badge/instructions/painhardcore/pstack/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/painhardcore/pstack/agents-md"><img src="https://agentmods.dev/badge/instructions/painhardcore/pstack/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 | $0.00493 | $0.00493 |
| Opus 5.5 | $0.00197 | $0.00197 |
| Sonnet 5.5 | $0.00099 | $0.00099 |
| Haiku 4.5 | $0.00049 | $0.00049 |
Grade A, and why
pstack 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 — 47 lines — stays where its author put it; the contents beside it link to each section on GitHub.
pstack instructions for Codex
Codex loads this repository through .codex-plugin/plugin.json. Type $ and select a pstack: skill for explicit invocation. Codex can also select a skill implicitly from its description.
Use pstack:poteto-mode as the entry point for non-trivial engineering work.
Direct skills
poteto-moderoutes work to playbooks and principles.how,why,recall, andblast-radiusestablish context.architect,arena,swarm, andinterrogateshape or review work.teach,tdd,no-comments, andtypescript-best-practiceshandle focused workflows.figure-it-outandshow-me-your-workhandle large or auditable work.create-verification-skillandmaintain-verification-skillbuild project verification.technical-writing,unslop, andbroshape communication.
The 21 principle-* skills are loaded by direct skills when their rules affect a decision.
Portable behavior
Use Codex's native planning, collaboration, file, terminal, wait, and automation tools. Inherit the parent model unless a task explicitly needs another available model. If the user prohibits subagents, run the workflow inline and keep the skipped delegation step with its reason.
Repository-local skills belong under .agents/skills/.
Anything that changes external state requires explicit authority. This includes pushes, pull requests, merges, deployments, messages, ticket updates, and remote deletion.
Playbooks
poteto-mode ships 19 playbooks:
- investigation, bug-fix, perf-issue, hillclimb, runtime-forensics, trace-forensics
- feature, refactoring, prototype, visual-parity, authoring-a-skill, eval
- babysit, autonomous-run, session-pickup, pause-safely
- multi-phase-plan, worktree-cleanup, opening-a-pr
Cursor-only skills and playbooks are not included. Use the upstream Cursor plugin for those workflows.
Repository checks
Run the complete public release gate before reporting repository changes as complete:
make check
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 First seen · 47 lines · 493 tokens per session scan A bc5715fb66e0
pstack AGENTS.md is an instructions file published in the GitHub repository painhardcore/pstack (8 stars, last pushed 2d ago), licensed MIT. It adds 493 tokens to every session, about $0.0020 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.
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).
deepseek-harness AGENTS.md
AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.