running-in-the-cloud SKILL.md skillB
running-in-the-cloud from summerengine/summer is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add summerengine/summer/running-in-the-cloud@git:20261010.4ade947Pins git:20261010.4ade947 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- B, 16 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- summerengine/summer
- Path
library/skills/running-in-the-cloud/SKILL.md- Versions recorded
- 5
- Latest version
- git:20261010.4ade947, committed Oct 10, 2026
- First version recorded
- Sep 2, 2026
- Size
- 6,553 bytes
- Repository stars
- 86
- License
- MIT
Run Summer Engine on a Linux box with no display — install it, launch headless, know when xvfb + software GL are needed, authenticate without a browser.
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
# Running in the Cloud ## Overview Summer Engine runs on a Linux machine with no display and no human. Everything in this skill was measured in a real cloud container: headless engine boots, MCP tools answer, and renders work under xvfb + llvmpipe. Three facts carry the whole setup: 1. **Local engine ops need no login.** The engine mints its own API token (`~/.summer/api-token`, per-instance tokens in `~/.summer/instances/*.json`) on every launch. Scene mutation, inspection, play, diagnostics, headless scripting — all of it works with zero accounts. 2. **Only gateway features need a credential** — asset search, asset/image/3D generation, releases. In the cloud, pass it as an env var instead of a browser login. 3. **Most containers have no GPU and no Vulkan.** Pure headless work does not care. Anything that produces pixels needs a virtual display and software GL. ## Install the engine `summer install` on Linux (x86_64) resolves in this order: | Priority | Source | When | |---|---|---| | 1 | `SUMMER_ENGINE_BINARY=<abs path>` | The container already carries a prebuilt engine binary. Registers that binary — no download. | …
Read the whole file at its exact version.
How to install
mdr add summerengine/summer/running-in-the-cloud@sha256:2a361817fae991a2The line at the top of this page pins the label git:20261010.4ade947, 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_2rkjvl55zxqjcxsl)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Sep 2, 2026 and Oct 10, 2026, about one every 9 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261010.4ade947 latest | 2026-10-10 | 4ade947 | 6,553 B | B | view · diff |
| git:20260911.b4df358 | 2026-09-11 | b4df358 | 6,658 B | B | view · diff |
| git:20260902.548800b | 2026-09-02 | 548800b | 6,903 B | B | view · diff |
| git:20260902.a7de2fb | 2026-09-02 | a7de2fb | 6,931 B | B | view · diff |
| git:20260902.e391da6 | 2026-09-02 | e391da6 | 7,134 B | B | view |
Audit of the latest version
- fail: No link to a raw IP address (matched: http://127.0.0.1)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (6553 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 script tag
Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.
Source
summerengine/summer · 86 stars · license MIT · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_2rkjvl55zxqjcxsl GET https://markdownregistry.com/api/v1/resolve?ref=summerengine/summer/running-in-the-cloud GET https://markdownregistry.com/api/v1/blob/2a361817fae991a26f95e41f45415d693a643f13809c63d5eee3a9c2ce4271e1
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.