majiayu000/spellbook · skills/prd-master/SKILL.md

prd-master skillA

prd-master is agent-read markdown (skill) from majiayu000/spellbook: PRD writing and product definition expert. Use when writing PRDs, user stories, acceptance criteria, or prioritizing features. Covers RICE/MoSCoW frameworks, agile requirements, and specification best practices..

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 majiayu000/spellbook/prd-master@git:20260523.d39dd11
Exact content
mdr add majiayu000/spellbook/prd-master@sha256:259578f29349bd65

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_3htry4qzaswmow5s.svg)](https://markdownregistry.com/a/art_3htry4qzaswmow5s)

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Versions

versioncommittedcommitsizeaudit
git:20260523.d39dd11 latest2026-05-23 d39dd11 13,567 BA view · diff
git:20251218.65d8cd42025-12-18 65d8cd4 19,770 BA view · diff
git:20251218.0e33f852025-12-18 0e33f85 18,179 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 (13567 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

majiayu000/spellbook · 280 stars · license MIT · pushed 2026-09-18 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_3htry4qzaswmow5s
GET https://markdownregistry.com/api/v1/resolve?ref=majiayu000/spellbook/prd-master
GET https://markdownregistry.com/api/v1/blob/259578f29349bd65d9e7d174b2e03cc77dc950daa3d15ac0c43dd013e099366a

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