exeslim: Instructions file for Codex

AGENTS.md

exeslim AGENTS.md is an instructions file for Codex, OpenCode from ryanlewis/exeslim. It costs 288 tokens per session, scanned B, original, MIT.

Deployment instructions for exeslim, a small exe.dev server image containing system services, security certificates, and basic network tools. It is meant to run applications built elsewhere.

In plain words
What is it for?
Installing only needed system packages, deploying prebuilt applications, managing systemd services, restarting them, and debugging through persistent logs.
Why use it?
It prevents developers from assuming that common programming tools or Docker are installed on the deployment machine, and explains where to find service logs.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md.

This is ryanlewis/exeslim's own configuration. It tells Codex and OpenCode how to work on exeslim itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything exeslim configures →

Reuse

Borrowing it

Nothing to install: this file belongs to ryanlewis/exeslim. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/ryanlewis/exeslim/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/ryanlewis/exeslim

Made for: Codex, OpenCode.

Wrote 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.

agentmods badge for exeslim AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/ryanlewis/exeslim/agents-md/github.svg)](https://agentmods.dev/instructions/ryanlewis/exeslim/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/ryanlewis/exeslim/agents-md"><img src="https://agentmods.dev/badge/instructions/ryanlewis/exeslim/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.

agentmods 80×15 button for exeslim AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/ryanlewis/exeslim/agents-md"><img src="https://agentmods.dev/badge/instructions/ryanlewis/exeslim/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 288 This file is loaded in full into every session.
When invoked 288 The same file — it is already loaded in full.
Security scan B 2 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00288 $0.00288
Opus 5.5 $0.00115 $0.00115
Sonnet 5.5 $0.00058 $0.00058
Haiku 4.5 $0.00029 $0.00029

Measured 2mo ago against content hash d9cbcc7f29bd, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

exeslim 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 2mo 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.

docker, nginx, Chrome. `apt` works, so `sudo apt-get install <pkg>` is fine for

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

It is a deployment target: a minimal base carrying systemd, TLS roots and curl,
AGENTS.md · 25 lines

What it actually says

You are running in an exe.dev VM.

https://exe.dev/docs/proxy.md has details about the exe.dev HTTPS proxy.

Only use documented exe.dev features (see https://exe.dev/docs.md). Undocumented local endpoints are internal infrastructure—unstable and unsupported.

This VM runs exeslim, not exeuntu

It is a deployment target: a minimal base carrying systemd, TLS roots and curl, and nothing else. Do not assume the usual exeuntu toolbox is present.

Not installed: compiler/build-essential, python, node, Go, uv, git, docker, nginx, Chrome. apt works, so sudo apt-get install <pkg> is fine for anything you genuinely need — but prefer building artifacts elsewhere and shipping them here, which is how this box is meant to be used.

Services are systemd units. Start/stop with systemctl, and read logs with journalctl -u <name> — journald storage is persistent, and with no toolchain on the box it is the main debugging surface.

The app is normally a prebuilt binary deployed by scp/rsync from a laptop or CI, then restarted via systemd. Anything you install directly on the VM is lost if it is recreated from a fresh image, so durable changes belong in the deploying repo, not here.

Changes

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.

  1. 2mo ago First seen · 25 lines · 288 tokens per session scan B d9cbcc7f29bd

Subscribe to this mod's changes

exeslim AGENTS.md is an instructions file published in the GitHub repository ryanlewis/exeslim (13 stars, last pushed 5d ago), licensed MIT. It adds 288 tokens to every session, about $0.0012 per session on Opus 5.5. 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.

Related

exeslim AGENTS.md compared with instructions from other repositories

exeslim AGENTS.md next to 6 instructions from other repositories
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exeslim AGENTS.mdryanlewis/exeslimInstructions file135d agoMITB288Codex, OpenCode
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next.js AGENTS.mdvercel/next.jsInstructions file143kyesterdayMITA7,461Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchainInstructions file149kyesterdayMITA4,680Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA5,516GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA3,093GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harnessInstructions file274k2d agoMITA4,313Codex, OpenCode