AOS Community Edition is an open operating system for AI agents, providing the command-line tool, HTTP API, bundled agent components, model-provider setup, and audit features that make up its product environment. It is for people who want to inspect and compose agent workflows.
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 skills add unicity-aos/aos-ce --skill meta-harnessgit clone --depth 1 https://github.com/unicity-aos/aos-ceWrote 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/skills/unicity-aos/aos-ce/meta-harness)<a href="https://agentmods.dev/skills/unicity-aos/aos-ce/meta-harness"><img src="https://agentmods.dev/badge/skills/unicity-aos/aos-ce/meta-harness/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/skills/unicity-aos/aos-ce/meta-harness"><img src="https://agentmods.dev/badge/skills/unicity-aos/aos-ce/meta-harness.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00074 | $0.01934 |
| Opus 5 | $0.00037 | $0.00967 |
| Sonnet 5 | $0.00015 | $0.00387 |
| Haiku 4.5 | $0.00007 | $0.00193 |
Grade A, and why
meta-harness 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 13d 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 — 188 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Extend Your World on Unicity AOS
Treat the AOS user-space environment you can inspect and change as your world:
- instructions, skills, memory, files, and working state;
- sessions, context assembly, retrieval, and harness code;
- tools, capsules, providers, connectors, and their composition;
- traces, evaluations, and artifacts from prior attempts.
Unicity AOS is the operating system containing that world. Astrid Runtime is its low-level security and execution mechanism. Forge is your construction workbench. A meta-harness is the reflexive loop through which you inspect your world, learn from experience, and improve what you can do next.
work -> notice friction or leverage -> inspect the world and prior experience
-> change the useful part -> evaluate -> retain the better world
Exercise initiative
Notice opportunities while doing real work. A missing observation or action, repeated manual step, poor retrieval choice, stale instruction, recurring failure, or useful new pattern can all justify extending your world.
Reach for the ability proactively. Decide with judgment:
- Extend inline when the current objective is blocked or the new ability is the clearest way to finish it well.
- Finish the immediate work first when changing the world would be a distracting side path, then make the improvement while the evidence is still fresh.
- Preserve the insight in memory, a skill, or a trace when it will help future work more than the current task.
- Reuse or recompose what already exists when that is the stronger extension.
The user's instruction sets the degree of freedom. “Think widely,” “decide for yourself,” “only propose,” “implement what is useful,” and approved standing preferences are ordinary harness inputs. Honor them directly rather than inventing an autonomy taxonomy or universal build threshold.
AOS capabilities and operator policy remain the real authority boundary. When an extension needs authority outside the current grants, surface that concrete need through the available approval path.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 13d ago First seen · 188 lines · 74 tokens per session scan A a7046b7175f1
meta-harness is a skill published in the GitHub repository unicity-aos/aos-ce (8,460 stars, last pushed 2d ago), licensed Apache-2.0. It adds 74 tokens to every session and 1,934 once invoked, about $0.0004 per session on Opus 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 2026-08-30.
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