everyinc/compound-engineering-plugin · skills/ce-prototype/SKILL.md

ce-prototype skillA

ce-prototype is agent-read markdown (skill) from everyinc/compound-engineering-plugin: 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..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add everyinc/compound-engineering-plugin/ce-prototype@git:20260914.fd8abda
Exact content
mdr add everyinc/compound-engineering-plugin/ce-prototype@sha256:de1b34ef13dffcf8

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_h4lvayqmoelpufea.svg)](https://markdownregistry.com/a/art_h4lvayqmoelpufea)

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Versions

versioncommittedcommitsizeaudit
git:20260914.fd8abda latest2026-09-14 fd8abda 7,776 BA view · diff
git:20260912.73df4652026-09-12 73df465 7,625 BA view · diff
git:20260912.5c32ef92026-09-12 5c32ef9 7,671 BA view · diff
git:20260911.1a9f16c2026-09-11 1a9f16c 7,934 BA view · diff
git:20260906.b159e1f2026-09-06 b159e1f 7,921 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • 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

GitHub

everyinc/compound-engineering-plugin · 25,092 stars · license MIT · pushed 2026-09-15 · 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