Agentlas OS is a local-first system for creating, storing, borrowing, and running specialist AI agents and temporary agent teams through supported hosts and models. It serves people who want reusable agents that remain available across computers and model workspaces, and the catalogue contains its skills, commands, hooks, agents, instructions, plugin, and rule.
Borrowing it
Nothing to install: this file belongs to agentlas-ai/Agentlas-OS. 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/agentlas-ai/Agentlas-OS/main/AGENTS.mdgit clone --depth 1 https://github.com/agentlas-ai/Agentlas-OSWrote 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/agentlas-ai/agentlas-os/agents-md)<a href="https://agentmods.dev/instructions/agentlas-ai/agentlas-os/agents-md"><img src="https://agentmods.dev/badge/instructions/agentlas-ai/agentlas-os/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/agentlas-ai/agentlas-os/agents-md"><img src="https://agentmods.dev/badge/instructions/agentlas-ai/agentlas-os/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 | $0.06489 | $0.06489 |
| Opus 5.5 | $0.02596 | $0.02596 |
| Sonnet 5.5 | $0.01298 | $0.01298 |
| Haiku 4.5 | $0.00649 | $0.00649 |
Grade A, and why
Agentlas-OS 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 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.
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 — 509 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Agentlas Core Engine Meta-Agent Team
Asked to install this repo, not to work on it? This file is the contributor constitution and will not help you. Read the install block at the top of README.md: it points at
scripts/install-all-runtimes.sh, which writes only under~/.agentlas,~/.local/bin, and this host's own plugin/command-adapter directories.
Repository Constitution: Local Main Only
This repository uses one canonical development line: the local main branch
in the canonical Agentlas OS checkout.
- Make every source change and commit directly on local
main. - Do not create feature, release, backup, agent-named, or temporary branches.
- Do not create Git worktrees. Use an external recovery directory or a verified Git bundle when a safety snapshot is required.
- Before editing, confirm the canonical checkout is on
main, inspect status, fetch remote refs, and inspectmain...origin/main. A GUI "Pull origin" button is not permission to pull or merge blindly. - If local
mainis dirty, preserve it with a reviewed checkpoint commit before reconciling remote changes on that same branch. - Push only
mainand intentional release tags. Do not publish side branches.
Public Release Allowlist (Hard Rule)
Before any commit, push, tag, release, or upload to a public GitHub repository,
construct and review an explicit allowlist. Public source and release artifacts
may contain only files required for an end user to install and run the product,
plus public-facing README, LICENSE, and CHANGELOG material.
Never publish internal design or research documents, plans, benchmarks, benchmark prompts or results, tests, fixtures, test data, scores, logs, screenshots, signing material, certificates, credentials, environment files, operator notes, private paths, local memory, or recovery artifacts. Run tests and benchmarks only in local/private temporary storage or private CI; publish neither their inputs nor their artifacts. Existing unrelated local work must remain unstaged.
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 Changed · -4 tokens per session 940e3dfae6c9
- 11d ago Changed · +1 lines · +22 tokens per session d5aefa551e97
- 17d ago Changed · +10 lines · +158 tokens per session 3f490e2e24e0
- 1mo ago Changed · +8 lines · +98 tokens per session fd56f0763842
- 1mo ago First seen · 490 lines · 6,215 tokens per session scan A 084fa391442c
Agentlas-OS AGENTS.md is an instructions file published in the GitHub repository agentlas-ai/Agentlas-OS (1,613 stars, last pushed 2d ago), licensed Apache-2.0. It adds 6,489 tokens to every session, about $0.0260 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 2026-09-03.
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.