ce-prototype SKILL.md skillA
ce-prototype from everyinc/compound-engineering-plugin is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add everyinc/compound-engineering-plugin/ce-prototype@git:20260914.fd8abdaPins git:20260914.fd8abda in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- everyinc/compound-engineering-plugin
- Path
skills/ce-prototype/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260914.fd8abda, committed Sep 14, 2026
- First version recorded
- Sep 6, 2026
- Size
- 7,776 bytes
- Repository stars
- 25,969
- License
- MIT
Build a throwaway prototype to answer how something should work, feel, or read. Use when committing the wrong answer would be expensive to unravel and a cheap sketch cannot settle it. Not a rough visual probe during brainstorming, not for deciding what to build, not polishing a feature that already works, not implementing the real thing.
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
# Prototype Build a throwaway prototype at the fidelity that can answer this question, before committing an approach later work will treat as given. Then apply the decisions or hand off. **Do not fake the dimension being tested.** Modality, fidelity, and medium all follow from that one rule. A question about how a flow or state model behaves is settled by driving it, so a screen that only looks like the product does not answer it. A question about how a layout or a mark reads is settled by seeing it at real finish, so a thin sketch does not answer it either. The user's own perception settles the question, never your judgment of the artifact. **Result:** the user decided how the product should work or feel against a prototype that did not fake what they were deciding. **Next consumer:** an existing markdown Product Contract, or `ce-brainstorm` / `ce-plan` with this session as the seed. **Done:** the user settled the questions that needed an artifact, or they apply and continue into brainstorm or plan. Their choice is the settlement, not a direction you inferred. **Not:** a decision a cheap sketch settles, polish, or shipping the prototype as a final product. …
Read the whole file at its exact version.
How to install
mdr add everyinc/compound-engineering-plugin/ce-prototype@sha256:de1b34ef13dffcf8The line at the top of this page pins the label git:20260914.fd8abda, 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_h4lvayqmoelpufea)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Sep 6, 2026 and Sep 14, 2026, about one every 2 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260914.fd8abda latest | 2026-09-14 | fd8abda | 7,776 B | A | view · diff |
| git:20260912.73df465 | 2026-09-12 | 73df465 | 7,625 B | A | view · diff |
| git:20260912.5c32ef9 | 2026-09-12 | 5c32ef9 | 7,671 B | A | view · diff |
| git:20260911.1a9f16c | 2026-09-11 | 1a9f16c | 7,934 B | A | view · diff |
| git:20260906.b159e1f | 2026-09-06 | b159e1f | 7,921 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 (7776 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
everyinc/compound-engineering-plugin · 25,969 stars · license MIT · pushed 2026-11-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_h4lvayqmoelpufea GET https://markdownregistry.com/api/v1/resolve?ref=everyinc/compound-engineering-plugin/ce-prototype GET https://markdownregistry.com/api/v1/blob/de1b34ef13dffcf882021bc8e600abb64bd9265fb624b35dd9800ce6412c78fb
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.