prd-author SKILL.md skillA
prd-author from cahenesy/throughline is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add cahenesy/throughline/prd-author@git:20261015.9250c5bPins git:20261015.9250c5b in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- cahenesy/throughline
- Path
skills/prd-author/SKILL.md- Versions recorded
- 7
- Latest version
- git:20261015.9250c5b, committed Oct 15, 2026
- First version recorded
- Jun 3, 2026
- Size
- 29,057 bytes
- Repository stars
- 3
- License
- MIT
Explore a problem space and produce or update the Product Requirements Document (the "what" and "why"). Persists to docs/PRD.md. Invoke with /prd-author. Run in its own session.
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
# PRD authoring Produce or update `docs/PRD.md` — the product intent of record. The PRD is the WHAT and WHY. It contains no HOW: no architecture, no tech choices, no implementation detail (those belong in a TDD). Keep it the WHAT. The HOW is `/tdd-author`'s job. Do not start designing. Run this in its own session. If `docs/PRD.md` already exists you are UPDATING it — read it first and preserve requirements still valid; note what changed. ## Relationship to superpowers (read first) This skill IS the design/requirements step for throughline — it is the governance-producing equivalent of `superpowers:brainstorming`. When the user invokes `/prd-author`, do NOT also invoke `superpowers:brainstorming` or `writing-plans`; this skill owns the phase and its output is the PRD of record (see [[ADR 0001]] in `docs/adr/`). But do not redo discovery that already happened: if a `docs/superpowers/specs/*` (or `plans/*`) file or other prior design notes exist, READ them and fold their substance into the PRD instead of re-interviewing from scratch. Treat `docs/superpowers/*` as transient input — never authoritative, never relocated. The canonical record is `docs/PRD.md`. ## Process …
Read the whole file at its exact version.
How to install
mdr add cahenesy/throughline/prd-author@sha256:ac06fcc7889598cdThe line at the top of this page pins the label git:20261015.9250c5b, 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_g246tcdvwptk7n7y)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 7 versions of this file, between Jun 3, 2026 and Oct 15, 2026, about one every 22 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261015.9250c5b latest | 2026-10-15 | 9250c5b | 29,057 B | A | view · diff |
| git:20261012.86d3c70 | 2026-10-12 | 86d3c70 | 28,934 B | A | view · diff |
| git:20261007.3cd6695 | 2026-10-07 | 3cd6695 | 22,929 B | A | view · diff |
| git:20261005.c7ecdfc | 2026-10-05 | c7ecdfc | 20,347 B | A | view · diff |
| git:20260814.6d5ce23 | 2026-08-14 | 6d5ce23 | 19,490 B | A | view · diff |
| git:20260603.efd53ab | 2026-06-03 | efd53ab | 19,055 B | A | view · diff |
| git:20260603.832b2ca | 2026-06-03 | 832b2ca | 16,503 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 (29057 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
cahenesy/throughline · 3 stars · license MIT · pushed 2026-10-15 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_g246tcdvwptk7n7y GET https://markdownregistry.com/api/v1/resolve?ref=cahenesy/throughline/prd-author GET https://markdownregistry.com/api/v1/blob/ac06fcc7889598cdef42b26b50decafed4992f2ad36e9613d7dae9fc98d4c69f
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.