sethgammon/citadel · skills/prd/SKILL.md

prd skillA

prd is agent-read markdown (skill) from sethgammon/citadel: Generates a Product Requirements Document from a natural language app description. Asks clarifying questions, researches similar apps, defines scope, stack, architecture, and produces a structured PRD that Archon can decompose into a campaign..

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 sethgammon/citadel/prd@git:20260611.0f3f8e7
Exact content
mdr add sethgammon/citadel/prd@sha256:a83976ae5708be42

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_d7gpwbdnnd7fpouy.svg)](https://markdownregistry.com/a/art_d7gpwbdnnd7fpouy)

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Versions

versioncommittedcommitsizeaudit
git:20260611.0f3f8e7 latest2026-06-11 0f3f8e7 6,717 BA view · diff
git:20260611.a6479532026-06-11 a647953 6,704 BA view · diff
git:20260503.631b94d2026-05-03 631b94d 6,618 BA view · diff
git:20260329.6c378a22026-03-29 6c378a2 9,028 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 (6717 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

sethgammon/citadel · 922 stars · license MIT · pushed 2026-09-17 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_d7gpwbdnnd7fpouy
GET https://markdownregistry.com/api/v1/resolve?ref=sethgammon/citadel/prd
GET https://markdownregistry.com/api/v1/blob/a83976ae5708be423b9ea9f932c5e7d06e7f636e46a3f6611e1b8a30455f4ac8

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.