Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add instructions/j-i-l/contain/agents-mdgit clone --depth 1 https://github.com/j-i-l/contAInWrote 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/j-i-l/contain/agents-md)<a href="https://agentmods.dev/instructions/j-i-l/contain/agents-md"><img src="https://agentmods.dev/badge/instructions/j-i-l/contain/agents-md.svg" alt="Measured on agentmods" 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 | $0.01612 | $0.01612 |
| Opus 5 | $0.00806 | $0.00806 |
| Sonnet 5 | $0.00322 | $0.00322 |
| Haiku 4.5 | $0.00161 | $0.00161 |
Grade B, and why
contAIn AGENTS.md scanned grade B with 2 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 4d 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.
Asks for rootmediumPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
sudo ./scripts/configure.sh Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
- Health check: `curl http://localhost:PORT/health` The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
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.
- 4d ago First seen · 190 lines · 1,612 tokens per session scan B 8cf25e3990f3
contAIn AGENTS.md is an instructions file published in the GitHub repository j-i-l/contAIn (5 stars, last pushed 26d ago), with no licence file. It adds 1,612 tokens to every session, about $0.0081 per session on Opus 5. A static security scan graded it B with 2 findings (asks for root, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
Other instructions, from other repositories
emdash AGENTS.md
AGENTS.md instructions for generalaction/emdash, covering project overview, repository structure, build & development commands, code style & conventions and architecture notes.
grapefruit CLAUDE.md
Instructions for ChiChou/grapefruit, covering first-time setup, development, static checks, agent/ (frida agent) and gui/ (frontend).
portainer-mcp CLAUDE.md
Instructions for portainer/portainer-mcp, covering claude.md, project, commands, architecture and spec generation.
toolbox AGENTS.md
AGENTS.md instructions for go-appsec/toolbox, covering project overview, build commands, architecture, core files and protocol.
secutils AGENTS.md
AGENTS.md instructions for secutils-dev/secutils, covering agents.md, other agents.md files, everyday commands, pre-push gate and dependency upgrades.
emdash CLAUDE.md
Claude Code instructions for generalaction/emdash, a project described as: Emdash is the Open-Source Agentic Development Environment (🧡 YC W26). Run multiple coding agents in parallel. Use any provider.