042-planning-openspec SKILL.md skillA

042-planning-openspec from jabrena/plinth is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add jabrena/plinth/042-planning-openspec@v0.19.0

Pins v0.19.0 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
jabrena/plinth
Path
skills/042-planning-openspec/SKILL.md
Versions recorded
6
Latest version
v0.19.0, committed Sep 26, 2026
First version recorded
Apr 26, 2026
Size
6,415 bytes
Repository stars
461
License
Apache-2.0

Use when creating or updating OpenSpec artifacts from an issue, plan, approved design, ADRs, existing OpenSpec, or a valid combination. The workflow assesses reviewable scope, records source authority and derivation, handles conflicts, and prevents silent synchronization. Triggers include Create OpenSpec from an issue; Convert a plan into OpenSpec; Update an OpenSpec change; Split broad requirements into reviewable changes. Part of Plinth Toolkit.

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

# Composable OpenSpec Change Planning

Create or update OpenSpec proposal, design, specification, and task artifacts from the authoritative inputs already available. **This is an interactive SKILL**. An implementation plan is optional.

**What is covered in this Skill?**

- Inputs from issues, plans, approved designs, ADRs, existing OpenSpec, or valid combinations
- OpenSpec installation and project checks
- Concern-specific artifact authority
- Source recording and derivation direction
- Direct complete issue-context preparation when invoked through `/create-spec`
- One-change versus multiple-change scope assessment
- User-approved change maps and dependency order
- Proposal, design, specification, and single-checklist task creation
- Explicit conflict handling and no silent two-way synchronization

## Constraints

Create only requirements supported by authoritative inputs, assess change boundaries before writing artifacts, and preserve source authority.

- **MUST**: Accept issue, plan, approved design, ADR, existing OpenSpec, or combined inputs
- **MUST**: Check CLI availability with `openspec --version` before OpenSpec operations
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add jabrena/plinth/042-planning-openspec@sha256:b98532ab604158d7

The line at the top of this page pins the label v0.19.0, 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_rgqgpfq3yf3c4rwi.svg)](https://markdownregistry.com/a/art_rgqgpfq3yf3c4rwi)

4 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 6 versions of this file, between Apr 26, 2026 and Sep 26, 2026, about one every 31 days.

versioncommittedcommitsizeaudit
v0.19.0 latest2026-09-26 9569c35 6,415 BA view · diff
v0.18.02026-08-01 26b0e71 6,415 BA view · diff
v0.17.02026-07-10 aaee915 4,345 BA view · diff
v0.16.02026-06-15 b73c9d3 4,400 BA view · diff
v0.15.02026-05-29 a800339 4,329 BA view · diff
v0.15.0-SNAPSHOT2026-04-26 819f349 4,338 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the 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 (6415 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

jabrena/plinth · 461 stars · license Apache-2.0 · pushed 2026-11-06 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_rgqgpfq3yf3c4rwi
GET https://markdownregistry.com/api/v1/resolve?ref=jabrena/plinth/042-planning-openspec
GET https://markdownregistry.com/api/v1/blob/b98532ab604158d7e1cea8ae10b923dfcbf23e938538071da385df6db06eb10a

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.

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