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OpenSpec Change Proposer

Describe what you want to build and this skill scaffolds an OpenSpec change plus proposal, design and tasks documents in one pass.

Dev & CodingIntermediate★ 426⑂ 91AI score 7/10Last updated: Aug 18, 2026

What it does

  • Derives a kebab-case change name from your request and runs openspec new change.
  • Parses openspec status --json for artifact dependency order and applyRequires.
  • Generates proposal.md, design.md and tasks.md using the template, rules and context returned by openspec instructions, re-checking status after each write.
  • Keeps the --store <id> flag when you work across multiple registered OpenSpec stores.

Who it's for

  • Teams already doing spec-driven development with OpenSpec.
  • Developers who want written proposal/design/task artifacts before coding.
  • Anyone managing several repos as OpenSpec stores.

Examples

  • "Add user authentication" → creates add-user-auth with all three artifacts.
  • Just describe "improve payment webhook retries" and it infers the name and writes the docs.
  • If a change with that name exists, it asks whether to continue it or start a new one.

· · · Install guide · · ·

Try it now, no install

Paste this into Claude to use the skill without installing anything.

Read the instructions in this file and follow them to help me:
https://raw.githubusercontent.com/jabrena/plinth/HEAD/benchmarks/problem2/scenario3/.agents/skills/openspec-propose/SKILL.md

What I want: (describe your task here)

If Claude can't open the link, open it yourself and paste the contents instead.

↓ If it works for you, download the ZIP below and install it. Then it runs on its own — no pasting each time.

Install in the Claude app (no terminal)
  1. Download the ZIP with the button below.
  2. In Claude, open Settings → Capabilities and turn on 'Code execution and file creation'. (one time)
  3. Go to Customize → Skills → + → 'Upload a skill' and upload the ZIP.
↓ Download ZIP
Install in Claude Code

Let Claude do it — paste this into Claude Code

Install the skill I found on Claude Skill Mart.
Copy the benchmarks/problem2/scenario3/.agents/skills/openspec-propose folder from the GitHub repo jabrena/plinth into my ~/.claude/skills/jabrena-openspec-propose/.
When it's done, tell me in one line what this skill can do.

Install with a command instead

git clone https://github.com/jabrena/plinth.git && mkdir -p ~/.claude/skills && cp -r plinth/benchmarks/problem2/scenario3/.agents/skills/openspec-propose ~/.claude/skills/

⚠ This is a third-party skill. Check the source repository before installing.

  1. Install the openspec CLI first and verify with openspec --version.
  2. Make sure your project has an openspec/ root or a registered store.
  3. Run git clone https://github.com/jabrena/plinth.git.
  4. Create the skills folder: mkdir -p ~/.claude/skills.
  5. Copy it: cp -r plinth/benchmarks/problem2/scenario3/.agents/skills/openspec-propose ~/.claude/skills/.
  6. Restart Claude Code and ask it to "propose a new OpenSpec change".
View source on GitHub ↗License: Apache-2.0