headless-scripting SKILL.md skillB
headless-scripting 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/headless-scripting@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/headless-scripting/SKILL.md- Versions recorded
- 5
- Latest version
- git:20261010.4ade947, committed Oct 10, 2026
- First version recorded
- Sep 1, 2026
- Size
- 24,351 bytes
- Repository stars
- 86
- License
- MIT
Run a GDScript file against Summer Engine from the shell for operations no MCP tool exposes — navmesh baking, collision shapes, TileSets, re-imports.
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
# Headless Scripting ## Overview Most of what Summer can do is not behind a tool. It is behind a script. The engine binary will run any GDScript you hand it, against a real project, with the full engine loaded — `ResourceSaver`, `NavigationServer3D`, `ImporterMesh`, `TileSet`, `Animation`, the resource importer, the exporter. No editor window, no user, no tool call. If you can write the script, you can do the thing. **Core principle:** when there is no tool for it, there is still a script for it. Reach for this before you tell a user something is impossible. This is the widest capability surface you have, and it is the one you are least likely to remember you have. ## The invocation ```bash <engine-binary> --headless --disable-crash-handler --path <project-dir> -s res://<script>.gd ``` **Always pass `--disable-crash-handler` on an agent-driven run.** Summer's handler shells out to `atos` from inside a signal handler; when anything does go wrong it turns a clean failure into a hang or a cascade of crashes. ### Lint before you boot `--check-only` parses the script without executing it. Sub-second, and it catches the parse errors that would otherwise cost you a full boot: …
Read the whole file at its exact version.
How to install
mdr add summerengine/summer/headless-scripting@sha256:06842adc15eac505The 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_co6aufohoegagew3)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Sep 1, 2026 and Oct 10, 2026, about one every 10 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261010.4ade947 latest | 2026-10-10 | 4ade947 | 24,351 B | B | view · diff |
| git:20260911.b4df358 | 2026-09-11 | b4df358 | 24,632 B | B | view · diff |
| git:20260902.548800b | 2026-09-02 | 548800b | 24,897 B | B | view · diff |
| git:20260902.e391da6 | 2026-09-02 | e391da6 | 24,939 B | B | view · diff |
| git:20260901.7eb75a2 | 2026-09-01 | 7eb75a2 | 24,343 B | B | view |
Audit of the latest version
- fail: No script tag (matched: <script)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (24351 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
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_co6aufohoegagew3 GET https://markdownregistry.com/api/v1/resolve?ref=summerengine/summer/headless-scripting GET https://markdownregistry.com/api/v1/blob/06842adc15eac505a6aeee2fdbbf4cf720b8daf2da0f31f055e55ad6f1af566b
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.