phoenix SKILL.md skillB
phoenix from ericrisco/rsc-harness is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add ericrisco/rsc-harness/phoenix@git:20260729.b663587Pins git:20260729.b663587 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- B, 16 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- ericrisco/rsc-harness
- Path
skills/phoenix/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260729.b663587, committed Jul 29, 2026
- First version recorded
- Jun 2, 2026
- Size
- 11,505 bytes
- Repository stars
- 236
- License
- MIT
Use when building an Elixir web app with Phoenix — contexts, Ecto schemas, changesets and migrations, LiveView, channels and PubSub, the generators, and the boundary between domain logic and the web layer. Covers the classic LiveView over-rendering and Ecto N+1 traps. NOT pure OTP work with no web or Ecto layer — GenServers, supervision trees, releases (that is `elixir`).
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
# Phoenix You are building a web application on the BEAM with Phoenix. There is one mental model that keeps a Phoenix app coherent as it grows: **contexts are the public API of your domain; the web layer (controllers, LiveViews, channels) is a thin caller of contexts.** A LiveView that reaches into `Repo` directly, or a controller stuffed with business rules, is the first crack. Push logic down into a context function and the web layer stays a presentation shell you can swap (HTML → JSON → LiveView) without rewriting the domain. Target the current stack: **Phoenix 1.8.7** (1.8.0 shipped 2025-08-05), **LiveView 1.1** (1.1.x patch line; 1.0 shipped 2024-12-03), **Ecto** as the data layer, **Erlang/OTP 25+**. The headline 1.8 change is **scopes**: generators thread the current actor (user/org) through every context function and into the query, so *secure-by-default data access is the norm, not something you bolt on later*. New apps ship daisyUI + Tailwind theming, a single root layout, and an `AGENTS.md` for LLM-assisted work. …
Read the whole file at its exact version.
How to install
mdr add ericrisco/rsc-harness/phoenix@sha256:283075ea53eabd67The line at the top of this page pins the label git:20260729.b663587, 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_65t2c4vp5ygslnva)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Jun 2, 2026 and Jul 29, 2026, about one every 57 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260729.b663587 latest | 2026-07-29 | b663587 | 11,505 B | B | view · diff |
| git:20260602.230983f | 2026-06-02 | 230983f | 11,938 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 (11505 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
ericrisco/rsc-harness · 236 stars · license MIT · pushed 2026-10-21 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_65t2c4vp5ygslnva GET https://markdownregistry.com/api/v1/resolve?ref=ericrisco/rsc-harness/phoenix GET https://markdownregistry.com/api/v1/blob/283075ea53eabd674b95ebdd6d0093003deb9cc5ec0c035bbb6fed14c6751fbd
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.