cast SKILL.md skillA
cast from guaardvark/guaardvark is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add guaardvark/guaardvark/cast@git:20260911.973d1bcPins git:20260911.973d1bc in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- guaardvark/guaardvark
- Path
.agents/skills/cast/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260911.973d1bc, committed Sep 11, 2026
- Size
- 2,698 bytes
- Repository stars
- 294
- License
- MIT
Build consistent characters, environments and props in Guaardvark's Cast Library and train LoRAs for them locally (reference photos → vision bible → sample plan → approved samples → training). Use when the user wants the same face or object across images, videos, a music video, or a Film Crew production, or asks to "train a LoRA".
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
# Cast Library and LoRA training
Read `setup` first; training needs the `lora_trainer` plugin (CUDA, bf16) and an
installed train-ready base (Z-Image, SDXL or FLUX family). `B=${GUAARDVARK_URL:-http://localhost:5000}`.
## The pipeline
1. **Create the subject**
```bash
curl -s -X POST $B/api/cast-library/subjects -H 'Content-Type: application/json' -d '{
"kind": "character", "name": "Mara", "description": "late 30s, short grey hair, freckles",
"trigger_word": "mara_v1", "voice_id": null
}'
```
`kind` is `character`, `environment` or `prop`. `GET $B/api/cast-library` lists subjects; the
numeric `id` is what `generate_image` and batch routes take as `subject_ids`.
2. **Upload reference images** (5 to 20 clear shots, varied angles, same subject):
`curl -s -X POST $B/api/cast-library/subjects/$ID/upload-refs -F files=@1.jpg -F files=@2.jpg`
Ask first whether the person consented; do not train on someone who has not.
3. **Vision bible from the refs**: `POST $B/api/cast-library/subjects/$ID/bible/from-refs`
(the vision model writes the identity description that every prompt inherits).
…Read the whole file at its exact version.
How to install
mdr add guaardvark/guaardvark/cast@sha256:704361ece8aaf0d2The line at the top of this page pins the label git:20260911.973d1bc, 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_mo5n5zixgo3yeww3)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 11, 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 (2698 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
guaardvark/guaardvark · 294 stars · license MIT · pushed 2026-10-30 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_mo5n5zixgo3yeww3 GET https://markdownregistry.com/api/v1/resolve?ref=guaardvark/guaardvark/cast GET https://markdownregistry.com/api/v1/blob/704361ece8aaf0d2c4fd8403017d7a12cf588ba7e8dc5c41f3d7338f23130863
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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