Borrowing it
Nothing to install: this file belongs to mschulkind-oss/yolo-jail. 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/mschulkind-oss/yolo-jail/main/AGENTS.mdgit clone --depth 1 https://github.com/mschulkind-oss/yolo-jailWrote 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/mschulkind-oss/yolo-jail/agents-md)<a href="https://agentmods.dev/instructions/mschulkind-oss/yolo-jail/agents-md"><img src="https://agentmods.dev/badge/instructions/mschulkind-oss/yolo-jail/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/mschulkind-oss/yolo-jail/agents-md"><img src="https://agentmods.dev/badge/instructions/mschulkind-oss/yolo-jail/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 | $0.09251 | $0.09251 |
| Opus 5.5 | $0.03700 | $0.03700 |
| Sonnet 5.5 | $0.01850 | $0.01850 |
| Haiku 4.5 | $0.00925 | $0.00925 |
Grade A, and why
yolo-jail 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 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.
How it starts
The opening of the file, as written. The whole thing — 419 lines — stays where its author put it; the contents beside it link to each section on GitHub.
YOLO Jail: Agent Developer Guide
yolo-jail manages the environment a coding agent works in — the agents, their config, skills and
house rules, tools and credentials — declaratively and per workspace, and renders it wherever the
agent runs. Confinement is one setting of that description: a jail (a container, or a dedicated
macOS account) is the strongest and the default, and yolo host is none.
Describe yolo environment-first and confinement second in every tagline, summary and guide.
The charter is what-yolo-is.md, ruled in its
one-sentence answer.
This file is the guide for developing yolo-jail itself, and it is deliberately terse: each rule keeps its imperative, the file that enforces it, and its escape hatch — the linked authority carries the measurement and the history that produced it. Where this file and a linked authority disagree, the authority wins. Keep it that way: a new entry is one rule plus its enforcer and hatch; a rule a test already enforces with a clear failure needs only the test's name. Usage and config reference material is not here; see Where things live.
Packs, and what core does not know
AGENTS ARE PACKS. Core does not know what an agent is. No agent registry, no agents config key, no
YOLO_AGENTS. Config carries ONE list of packs; shipped packs live in packs/*/pack.json and are
selected by BARE NAME — "packs": ["claude"].
internal/config/validate.go hard-errors on agents on the host (and
warns in-jail, where the config is the generated snapshot).
A pack that installs an agent is just one that declares a kind: "program" surface, and most shipped
packs install no CLI at all. rg -l '"kind": "program"' packs/*/pack.json lists the packs that install
something and rg -l loophole packs/*/pack.json the loophole list; writing either membership down here is
what rots. Two structural facts, not guessable from a manifest:
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.
- 3d ago Changed · +13 lines · +315 tokens per session f1246f13db6e
- 4d ago Changed · -229 lines · -5,583 tokens per session a9d00a6c4e3b
- 6d ago Changed · -9 lines · -268 tokens per session 468b00ecd20c
- 8d ago Changed · -1 lines · -95 tokens per session 21f390387932
- 11d ago Changed · +2 lines · +45 tokens per session 765912ca5c6f
- 15d ago Changed · -11 tokens per session 1c180a75b1d0
- 17d ago Changed · +15 lines · +397 tokens per session bef6b2f0150f
- 19d ago Changed · +27 tokens per session 378c27af501d
- 21d ago Changed · +23 lines · +679 tokens per session c42dbfeac265
- 22d ago First seen · 605 lines · 13,745 tokens per session scan A f207131771e5
yolo-jail AGENTS.md is an instructions file published in the GitHub repository mschulkind-oss/yolo-jail (3 stars, last pushed today), licensed Apache-2.0. It adds 9,251 tokens to every session, about $0.0370 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).
vscode model-prompts.instructions.md
Model-specific prompt authoring and registry guidelines.