OpenShell is a runtime for autonomous AI agents that executes them in sandboxed environments governed by declarative policies. It is used to restrict agents' access to files, credentials, data, and network resources, and the catalogue includes skills and workflows for operating and contributing to it.
Borrowing it
Nothing to install: this file belongs to NVIDIA/OpenShell. 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/NVIDIA/OpenShell/main/.agents/skills/test-release-canary/SKILL.mdgit clone --depth 1 https://github.com/NVIDIA/OpenShellWrote 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/nvidia/openshell/test-release-canary)<a href="https://agentmods.dev/skills/nvidia/openshell/test-release-canary"><img src="https://agentmods.dev/badge/skills/nvidia/openshell/test-release-canary/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/nvidia/openshell/test-release-canary"><img src="https://agentmods.dev/badge/skills/nvidia/openshell/test-release-canary.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 2 findings, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high Supply Chain · line 133 Remote code is downloaded and executed. This bypasses code review and could introduce malicious code.Fix: Avoid downloading and executing remote scripts. Use trusted packages from PyPI/npm. If remote fetch is required, verify checksums and use HTTPS.
- high Supply Chain · line 133 Remote code is downloaded and executed. This bypasses code review and could introduce malicious code.Fix: Avoid downloading and executing remote scripts. Use trusted packages from PyPI/npm. If remote fetch is required, verify checksums and use HTTPS.
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 | $0.00124 | $0.02617 |
| Opus 5.5 | $0.00050 | $0.01047 |
| Sonnet 5.5 | $0.00025 | $0.00523 |
| Haiku 4.5 | $0.00012 | $0.00262 |
Grade C, and why
test-release-canary scanned grade C 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 3d 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.
Downloads and executes remote codehighSupply chain
curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.
| `macos`/`ubuntu-deb`/`fedora` job fails on `install.sh` | Dev release missing an asset, checksum mismatch, or `install.sh` regression on this branch. | Job log around the `curl … install.sh \| sh` step. | Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
| `macos`/`ubuntu-deb`/`fedora` job fails on `install.sh` | Dev release missing an asset, checksum mismatch, or `install.sh` regression on this branch. | Job log around the `curl … install.sh \| sh` step. | How it starts
The opening of the file, as written. The whole thing — 160 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Test Release Canary
The Release Canary (.github/workflows/release-canary.yml) smoke-tests the artifacts a Release Dev run just published. It is the last automated checkpoint before tagging a public release: if the canary is red, the published dev artifacts do not install on a stock environment.
What the canary verifies
| Job | Runner | Verifies |
|---|---|---|
macos |
macos-latest-xlarge |
Installs the dev Homebrew artifacts, reaches the VM gateway, and creates, executes in, and deletes a sandbox. |
ubuntu-deb |
ubuntu-latest |
Installs the dev Debian package, reaches the Docker gateway, and creates, executes in, and deletes a sandbox. |
fedora |
fedora:latest container |
Installs the dev RPM packages, reaches the Podman gateway, and creates, executes in, and deletes a sandbox. |
ubuntu-snap-system-docker |
ubuntu-latest |
Uses install.sh to install the snap from latest/edge, reuses system Docker, verifies the packaged prover version and a local policy boundary check, reaches the Docker gateway, creates, executes in, and deletes a sandbox, and verifies that the Docker snap is not installed. |
ubuntu-snap-docker-preflight |
ubuntu-latest |
Verifies that install.sh rejects the OpenShell snap path when Docker is absent or supplied by the Docker snap, without installing OpenShell. |
kubernetes |
ubuntu-latest + kind |
Installs the dev Helm chart, reaches the in-cluster gateway, and creates, executes in, and deletes a sandbox using the published runtime images. |
All canary jobs disable anonymous OpenShell telemetry. Host package jobs inject
OPENSHELL_TELEMETRY_ENABLED=false through the service environment, and the
Kubernetes job installs with server.telemetryEnabled=false, so smoke traffic
does not contribute to product usage metrics.
The workflow sets OPENSHELL_VERSION=dev for every install.sh job. Positive
jobs consume the rolling dev release produced by the triggering workflow. The
system-Docker snap lane tracks latest/edge; the missing-Docker lane exits
before installing a snap. The Debian and Kubernetes CLI lanes remove snapd so
they continue to exercise the dev Debian package. Kubernetes pins the matching
0.0.0-dev chart and :dev images.
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.
- 3d ago Changed e82ad63584ed
- 15d ago Changed 12883781414d
- 22d ago Changed 75377fdc0eaa
- 25d ago Changed 9365643099b3
- 28d ago Changed ab6d13ea1aa0
- 1mo ago Changed · +1 lines 1dc2864522b7
- 1mo ago Changed · +7 lines c7f4fb283410
- 1mo ago Changed · -3 lines 84631c2428aa
- 1mo ago Changed · +1 lines 10411918f39c
- 1mo ago First seen · 154 lines · 124 tokens per session scan C 8f3695a6fa23
test-release-canary is a skill published in the GitHub repository NVIDIA/OpenShell (21,172 stars, last pushed yesterday), licensed Apache-2.0. It adds 124 tokens to every session and 2,617 once invoked, about $0.0005 per session on Opus 5.5. A static security scan graded it C with 2 findings (downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
test-release-canary compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| test-release-canaryNVIDIA/OpenShell | Skill | 21k | yesterday | Apache-2.0 | C | 124 | Claude Code, Codex |
| prepare-releasepingdotgg/t3code | Skill | 48k | today | MIT | A | 153 | Claude Code, Codex |
| codew-release-qa-sweepHmbown/CodeWhale | Skill | 41k | 5d ago | MIT | A | 31 | Claude Code, Codex |
| validate-release-greendiegosouzapw/OmniRoute | Skill | 83k | 5d ago | MIT | A | 47 | Claude Code, Codex |
| verify-and-shipcyrusagents/cyrus | Skill | 883 | yesterday | Apache-2.0 | A | 32 | Claude Code, Codex |
| shipplugin87/ux-ui-agent-skills | Skill | 3.1k | 10d ago | MIT | A | 34 | Claude Code |
| ship-workflowMathews-Tom/armory | Skill | 340 | 5d ago | MIT | A | 158 | Claude Code |