credentials SKILL.md skillA
credentials 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/credentials@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/credentials/SKILL.md- Versions recorded
- 4
- Latest version
- git:20261016.432b170, committed Oct 16, 2026
- First version recorded
- Oct 6, 2026
- Size
- 15,184 bytes
- Repository stars
- 6,776
- License
- Apache-2.0
Gives a workload in a smolvm machine an API key or token it can use but never read, by binding the credential to named HTTPS hosts so the guest holds only a placeholder and the host substitutes the value on the way out, then proves on the host that the value never entered the machine. Use when an agent or untrusted code inside a machine has to call an API with your key; when deciding between a credential binding and --secret-env; when a request from a credentialed machine comes back 403 or 502…
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 credential the machine can use and never hold Verified on **smolvm v1.29.0** on macOS arm64, 2026-10-15, and on **v1.18.2** on Linux aarch64, 2026-09-24, for everything that is decided on the host; on v1.29.0 on macOS arm64 **the substituted value also arrived at a real API** that echoes the headers it received, a dummy value. Done means the guest's variable is a placeholder, the value is nowhere in the guest, the machine's record or smolvm's database, TLS to the bound host goes through the machine's own CA, and a placeholder anywhere but a request header is refused before it leaves the host (from v1.27.0 a binding with `:body` also substitutes into a form body). 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. `docs/credential-substitution.md` in the smolvm repository is how the feature works: bindings, where the value comes from, what the guest sees, what happens to each request, and the limits. `README.md` has what was measured beside it. This file is how to set it up and prove it. ## Procedure ``` - [ ] 1. preflight.sh the flag, the network backend, the host variable …
Read the whole file at its exact version.
How to install
mdr add smol-machines/smolvm/credentials@sha256:88f2fd4ef54018c9The 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_elo55uixewwax2gj)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Oct 6, 2026 and Oct 16, 2026, about one every 3 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261016.432b170 latest | 2026-10-16 | 432b170 | 15,184 B | A | view · diff |
| git:20261014.8cf0601 | 2026-10-14 | 8cf0601 | 14,525 B | A | view · diff |
| git:20261006.6e6b288 | 2026-10-06 | 6e6b288 | 13,708 B | A | view · diff |
| git:20261006.b43e5b7 | 2026-10-06 | b43e5b7 | 12,917 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 (15184 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_elo55uixewwax2gj GET https://markdownregistry.com/api/v1/resolve?ref=smol-machines/smolvm/credentials GET https://markdownregistry.com/api/v1/blob/88f2fd4ef54018c97d79c5a90b19020a6c53a31b9523156dfb792dd31e3d1c9a
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.
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