scripting SKILL.md skillA
scripting from jstanden/cerb is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add jstanden/cerb/scripting@git:20260823.7d1dc0cPins git:20260823.7d1dc0c in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- jstanden/cerb
- Path
features/cerberusweb.core/assets/agent_filesystems/cerb-agents/skills/scripting/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260823.7d1dc0c, committed Aug 23, 2026
- Size
- 6,460 bytes
- Repository stars
- 83
- License
- a license file GitHub does not identify
Cerb scripting -- Twig at the base, extended with Cerb commands, functions, filters, and tests. Load it whenever you write or debug the contents of a scripting value, wherever that value lives.
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
# Cerb scripting
Cerb scripts are written in **Twig** -- the PHP-ecosystem templating language (twig.symfony.com), not a lookalike. Cerb embeds a real Twig environment, sandboxes it, and extends it.
**Standard Twig works.** Its syntax, its operators, and its built-in filters, functions, and tests behave as documented upstream -- `upper`, `join`, `default`, `merge`, `slice`, `date`, `json_encode` and the rest are all there. Reach for what you know about Twig first; you don't need Cerb documentation to justify a standard feature.
**What the sandbox removes is template composition and introspection.** These tags are the complete allowed set:
```
apply do filter for if sandbox set verbatim with
```
So there is no `{% macro %}`, `{% include %}`, `{% import %}`, `{% from %}`, `{% use %}`, `{% extends %}`, `{% embed %}`, or `{% block %}`, and no `include()`, `source()`, `template_from_string()`, `constant()`, or `dump()`. A scripting value is one self-contained template with nothing to compose against and no way to reach into the host -- which is the same reason it can't reach the automation around it.
## Scope: a scripting value is ONE Twig template, not an automation
…Read the whole file at its exact version.
How to install
mdr add jstanden/cerb/scripting@sha256:815ebfa2efdae090The line at the top of this page pins the label git:20260823.7d1dc0c, 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_nu7lr3held2q3gq5)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Aug 23, 2026.
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 (6460 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
jstanden/cerb · 83 stars · license a license file GitHub does not identify · pushed 2026-10-31 · branch 12.0.x
API
GET https://markdownregistry.com/api/v1/artifacts/art_nu7lr3held2q3gq5 GET https://markdownregistry.com/api/v1/resolve?ref=jstanden/cerb/scripting GET https://markdownregistry.com/api/v1/blob/815ebfa2efdae09006fa7c1c2846061d86911a1f21335ac500fb8c89d0e80795
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.