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Marketplace Dev (marketplace-dev)

Turns any Claude Code skills repo into an official plugin marketplace that users can install with `claude plugin install`.

Dev & CodingAdvanced★ 1,323⑂ 212AI score 9/10Last updated: Aug 8, 2026

What it does

  • Scans every SKILL.md in a repository and generates a spec-conforming .claude-plugin/marketplace.json.
  • Encodes hard-won gotchas: $schema is rejected by the validator, metadata only allows three fields, when strict: false is required, reserved marketplace names, and why source: "./" or skills: ["./"] breaks.
  • Runs a bundled 4-stage preflight script: JSON syntax → claude plugin validate → source/skills path resolution → reverse sync between disk and manifest.
  • Walks through local and GitHub install tests, install-cache footprint inspection, README updates, and a PR description template.
  • Ships optional PostToolUse hooks that re-validate on edit and warn when a changed SKILL.md has no version bump.

Who it's for

  • Developers who want to ship their skill collection as a one-click, auto-updating plugin.
  • Anyone stuck on repeated claude plugin validate failures.
  • Teams maintaining an internal skill catalog that needs consistent versioning rules.

Examples

  1. "Make my skills repo installable as a plugin marketplace" → discovers skills, groups categories, writes the manifest, validates it.
  2. Hitting Unrecognized key: "$schema" or Duplicate plugin name → the skill explains the root cause and the exact fix.
  3. Adding one new skill to an existing marketplace → minor-bumps metadata.version, sets the new plugin to 1.0.0, verifies the install cache, then drafts the PR.

· · · Install guide · · ·

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 daymade-claude-code/marketplace-dev folder from the GitHub repo daymade/claude-code-skills into my ~/.claude/skills/marketplace-dev/.
When it's done, tell me in one line what this skill can do.

Install with a command instead

git clone https://github.com/daymade/claude-code-skills.git /tmp/claude-code-skills && mkdir -p ~/.claude/skills && cp -r /tmp/claude-code-skills/daymade-claude-code/marketplace-dev ~/.claude/skills/

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

  1. Open a terminal and create the skills folder: mkdir -p ~/.claude/skills
  2. Clone the repository: git clone https://github.com/daymade/claude-code-skills.git /tmp/claude-code-skills
  3. Copy just this skill: cp -r /tmp/claude-code-skills/daymade-claude-code/marketplace-dev ~/.claude/skills/
  4. Make the helper scripts executable (if present): chmod +x ~/.claude/skills/marketplace-dev/scripts/*.sh
  5. Restart Claude Code and confirm marketplace-dev shows up in your skill list.
  6. Open Claude Code inside the target repository and ask: "Convert this repo into a plugin marketplace."
  7. Make sure the claude CLI is on your PATH — validation and install tests depend on it.
View source on GitHub ↗License: MIT