ffca-cross-feature SKILL.md skillA
ffca-cross-feature from verygoodopensource/vgv-ffca-plugin is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add verygoodopensource/vgv-ffca-plugin/ffca-cross-feature@git:20260929.ceab714Pins git:20260929.ceab714 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- verygoodopensource/vgv-ffca-plugin
- Path
skills/ffca-cross-feature/SKILL.md- Versions recorded
- 4
- Latest version
- git:20260929.ceab714, committed Sep 29, 2026
- First version recorded
- Jun 16, 2026
- Size
- 6,605 bytes
- Repository stars
- 6
- License
- MIT
Cross-feature dependencies in FFCA: the Summary pattern, Queries that combine repositories, sharing widgets between features, widget slots, and composing features. Use in an FFCA monorepo, a features/ folder whose packages are named {feature}_domain, {feature}_data, and {feature}_presentation, when one feature needs data, behavior, or a widget from another, when sharing models or widgets across features, or when choosing between a Query, a widget slot, and a new composing feature. Triggers on…
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
# FFCA Cross-Feature
Workflow for the moment one feature needs another. The patterns live in `${CLAUDE_PLUGIN_ROOT}/references/ffca/`: read the cited sections before coupling two features.
## The two allowed couplings
Features couple in exactly two places, and in one direction each:
- **Domain to domain.** A consuming feature's domain may depend on a provider feature's domain, for example `cart_domain` on `product_domain`. Read `references/ffca/domain.md`, section *Composing features*.
- **Presentation to presentation.** A presentation package may use a public widget from another feature's presentation package, under the three conditions below. Read `references/ffca/presentation.md`, section *Sharing a widget across features*.
Data layers never reach across features for data, and no layer ever depends on another feature's data package.
## Sharing data
…Read the whole file at its exact version.
How to install
mdr add verygoodopensource/vgv-ffca-plugin/ffca-cross-feature@sha256:8d22a57c7beb1b3fThe line at the top of this page pins the label git:20260929.ceab714, 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_llertq4pzii2sgxg)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Jun 16, 2026 and Sep 29, 2026, about one every 35 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260929.ceab714 latest | 2026-09-29 | ceab714 | 6,605 B | A | view · diff |
| git:20260929.fbd8e1d | 2026-09-29 | fbd8e1d | 3,701 B | A | view · diff |
| git:20260924.91accd9 | 2026-09-24 | 91accd9 | 3,163 B | A | view · diff |
| git:20260616.d36ae1d | 2026-06-16 | d36ae1d | 3,161 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 (6605 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
verygoodopensource/vgv-ffca-plugin · 6 stars · license MIT · pushed 2026-10-21 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_llertq4pzii2sgxg GET https://markdownregistry.com/api/v1/resolve?ref=verygoodopensource/vgv-ffca-plugin/ffca-cross-feature GET https://markdownregistry.com/api/v1/blob/8d22a57c7beb1b3fbb75cd963f8bb6f3b8e66147086ef14e5e617e01bb309888
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.