dev-env SKILL.md skillA
dev-env from smol-machines/smolvm is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add smol-machines/smolvm/dev-env@git:20261016.432b170Pins git:20261016.432b170 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- smol-machines/smolvm
- Path
docs/dev-env/SKILL.md- Versions recorded
- 3
- Latest version
- git:20261016.432b170, committed Oct 16, 2026
- First version recorded
- Oct 6, 2026
- Size
- 12,629 bytes
- Repository stars
- 6,776
- License
- Apache-2.0
Keeps a persistent smolvm machine with its dependencies already installed and re-enters it cheaply across sessions. Use when a project needs an isolated development environment that survives stop and start; when deciding what belongs in a Smolfile's init versus what has to run on every boot; when a package installed in a machine has vanished after a restart; or when exec answers "the container smolvm-<hash> is not running". Do not use it for untrusted code, which needs a machine that leaves…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# A persistent dev machine Verified on **smolvm v1.29.0** on macOS arm64, 2026-10-15, and on **v1.18.2** on Linux aarch64, 2026-09-24; the Linux runs used the Smolfile with `memory = 1024`, for the host reason in "Platform arms". Done means a second `start` is fast, skips provisioning, and the packages installed in the first session are still there. The Linux runs used the scripts of their date; this version's preflight and cleanup scripts ran on Linux aarch64 on v1.22.2 on 2026-10-03. The whole use case turns on one fact: **`init` runs once, not on every start**, as [`smolfile.md`](../smolfile.md) says, and as the docs site (smolmachines.com/docs) says under "When init runs". `smolvm machine create --help` reads "Run command on every VM start" at v1.22.2, and "Run command once, on the machine's first start" from v1.23.7; provisioning that relies on the old line is missing on the second boot. ## Procedure **1. Preflight.** ```bash scripts/preflight.sh ``` Read-only. `restart_after_stop=verified` on macOS and Linux. The script covers macOS and Linux only; elsewhere it prints `unknown` and a note pointing at `references/windows.md`, where a stopped …
Read the whole file at its exact version.
How to install
mdr add smol-machines/smolvm/dev-env@sha256:8d77f98f764e6133The line at the top of this page pins the label git:20261016.432b170, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_iel2fm6yswnqmmwf)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Oct 6, 2026 and Oct 16, 2026, about one every 5 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261016.432b170 latest | 2026-10-16 | 432b170 | 12,629 B | A | view · diff |
| git:20261014.8cf0601 | 2026-10-14 | 8cf0601 | 12,089 B | A | view · diff |
| git:20261006.48084f2 | 2026-10-06 | 48084f2 | 11,991 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (12629 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
smol-machines/smolvm · 6,776 stars · license Apache-2.0 · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_iel2fm6yswnqmmwf GET https://markdownregistry.com/api/v1/resolve?ref=smol-machines/smolvm/dev-env GET https://markdownregistry.com/api/v1/blob/8d77f98f764e6133a5d7d945a33f792e1a0c67e11a5bef60a2ce8f153fe8b6dd
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.