agentOS is a library that lets software agents run inside an existing application backend, using WebAssembly and V8 isolates with controlled access to host resources. It is for developers building agent-powered backends who need embedded execution and permissions, while the catalogue entries provide skills and instructions for operating the framework.
Borrowing it
Nothing to install: this file belongs to rivet-dev/agentos. 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/rivet-dev/agentos/main/.claude/skills/release/SKILL.mdgit clone --depth 1 https://github.com/rivet-dev/agentosWrote 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/rivet-dev/agentos/release)<a href="https://agentmods.dev/skills/rivet-dev/agentos/release"><img src="https://agentmods.dev/badge/skills/rivet-dev/agentos/release/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/rivet-dev/agentos/release"><img src="https://agentmods.dev/badge/skills/rivet-dev/agentos/release.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 | $0.00035 | $0.00382 |
| Opus 5.5 | $0.00014 | $0.00153 |
| Sonnet 5.5 | $0.00007 | $0.00076 |
| Haiku 4.5 | $0.00003 | $0.00038 |
Grade A, and why
release scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
AgentOS Release
The publish flow lives in scripts/publish and is driven by
.github/workflows/publish.yaml.
AgentOS is the source of truth. It publishes npm packages, crates, runtime
sidecars, Pyodide/R2 assets, and @agentos-software/* registry packages from
this repository. agentos releases are generated compatibility shims that
follow the AgentOS version; never release agentos first.
Procedure
- Start from a clean, pushed
merge-aosormainbookmark. - Run the local trigger:
just release --version 0.2.0 # exact version
just release --version 0.2.0-rc.1 # rc (npm tag `rc`)
just release --patch # semver bump from latest git tag
- Watch the workflow:
run=$(gh run list -R rivet-dev/agentos --workflow=publish.yaml -L1 --json databaseId --jq '.[0].databaseId')
gh run watch -R rivet-dev/agentos "$run" --exit-status
Notes
- Never publish to npm or crates.io locally; always go through
publish.yaml. scripts/publish/src/local/cut-release.tsis a pure trigger; version changes happen in the ephemeral CI checkout.workspace:*deps are rewritten to literal versions by the publish bump pass.- Generated agentos shims are dispatched after AgentOS publishes and must use the same version.
- If anything fails, stop and report — do not retry automatically.
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.
- 2mo ago First seen · 43 lines · 35 tokens per session scan A 23627e7207cb
release is a skill published in the GitHub repository rivet-dev/agentos (4,851 stars, last pushed yesterday), licensed Apache-2.0. It adds 35 tokens to every session and 382 once invoked, about $0.0001 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 2026-08-30.
release compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| releaserivet-dev/agentos | Skill | 4.9k | yesterday | Apache-2.0 | A | 35 | Claude Code |
| github-repo-managementmoltis-org/moltis | Skill | 2.9k | 14d ago | MIT | A | 47 | Claude Code, Codex |
| releasematrixorigin/memoria | Skill | 623 | 2d ago | Apache-2.0 | A | 27 | Claude Code, Codex |
| release-new-versionniki914/zafiro | Skill | 340 | 4d ago | MIT | A | 54 | Claude Code, Codex |
| playground-snapshot-releasemastra-ai/mastra | Skill | 29k | yesterday | none | A | 114 | Claude Code, Codex |
| pr-snapshot-releasemastra-ai/mastra | Skill | 29k | yesterday | none | A | 88 | Claude Code, Codex |
| parallel-pr-reviewsuyoumo/ClawProBench | Skill | 829 | 2mo ago | Apache-2.0 | A | 67 | Claude Code, Codex |