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Matt Van Horn 627947fc2c feat(plugin): publish as Claude Code marketplace plugin

Update .claude-plugin/marketplace.json and plugin.json to v2.9.5 with
full metadata. Add plugin install instructions to README as the
recommended install method. The repo root serves as both the marketplace
and the plugin - skills/last30days/SKILL.md (symlink) is discovered
automatically.

Users can now install with:
  /plugin marketplace add mvanhorn/last30days-skill
  /plugin install last30days@last30days-skill

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

2026-03-08 13:09:33 -07:00

6.4 KiB

Raw Blame History

title, type, status, date

title	type	status	date
feat: Publish last30days as Claude Code marketplace plugin	feat	active	2026-03-08

feat: Publish last30days as Claude Code Marketplace Plugin

Overview

Publish the last30days skill as a Claude Code plugin so users can install it with:

/plugin marketplace add mvanhorn/last30days-skill
/plugin install last30days@last30days-skill

This gives users auto-updates, versioned installs, and the standard plugin management UX instead of manual git clone.

Current State

The repo already has most of what's needed:

Component	Status	Notes
`SKILL.md`	Exists	Source of truth at repo root
`skills/last30days/SKILL.md`	Exists (symlink)	Points to root SKILL.md, added for Gemini CLI
`scripts/`	Exists	Python research engine
`gemini-extension.json`	Exists	Gemini CLI support
`.claude-plugin/marketplace.json`	Missing	Needed to make repo a marketplace
`.claude-plugin/plugin.json`	Missing	Needed (in plugin subdir) to define the plugin
`plugins/last30days/`	Missing	Plugin directory structure

How It Works (compound-engineering as reference)

The repo serves as BOTH a marketplace (distribution channel) and contains plugins:

repo-root/                          # = marketplace
├── .claude-plugin/
│   └── marketplace.json            # Makes repo discoverable as marketplace
└── plugins/
    └── plugin-name/                # = individual plugin
        ├── .claude-plugin/
        │   └── plugin.json         # Plugin manifest
        └── skills/
            └── skill-name/
                └── SKILL.md

Implementation Plan

1. Create marketplace manifest

`.claude-plugin/marketplace.json`

{
  "$schema": "https://anthropic.com/claude-code/marketplace.schema.json",
  "name": "last30days-skill",
  "description": "Research any topic from the last 30 days across Reddit, X, YouTube, TikTok, Instagram, Hacker News, Polymarket, and the web.",
  "owner": {
    "name": "Matt Van Horn",
    "url": "https://github.com/mvanhorn"
  },
  "plugins": [
    {
      "name": "last30days",
      "description": "Research any topic from the last 30 days. Become an expert and write copy-paste-ready prompts.",
      "version": "2.9.5",
      "author": {
        "name": "Matt Van Horn",
        "url": "https://github.com/mvanhorn"
      },
      "source": "./plugins/last30days",
      "category": "productivity",
      "homepage": "https://github.com/mvanhorn/last30days-skill"
    }
  ]
}

2. Create plugin directory

`plugins/last30days/.claude-plugin/plugin.json`

{
  "name": "last30days",
  "version": "2.9.5",
  "description": "Research any topic from the last 30 days across Reddit, X, YouTube, TikTok, Instagram, Hacker News, Polymarket, and the web.",
  "author": {
    "name": "Matt Van Horn",
    "email": "mvanhorn@gmail.com",
    "url": "https://github.com/mvanhorn"
  },
  "homepage": "https://github.com/mvanhorn/last30days-skill",
  "repository": "https://github.com/mvanhorn/last30days-skill",
  "license": "MIT",
  "keywords": [
    "research",
    "reddit",
    "twitter",
    "youtube",
    "tiktok",
    "trends",
    "prompts"
  ]
}

3. Symlink skill and scripts into plugin directory

mkdir -p plugins/last30days/.claude-plugin
mkdir -p plugins/last30days/skills/last30days

# Symlink SKILL.md (single source of truth)
ln -s ../../../../SKILL.md plugins/last30days/skills/last30days/SKILL.md

# Symlink scripts directory (the Python engine)
ln -s ../../scripts plugins/last30days/scripts

# Symlink fixtures if needed
ln -s ../../fixtures plugins/last30days/fixtures

4. Update README with plugin install instructions

Add before the manual install section:

### Plugin Install (recommended)

/plugin marketplace add mvanhorn/last30days-skill /plugin install last30days@last30days-skill


Then configure your API keys:
```bash
mkdir -p ~/.config/last30days
# Add SCRAPECREATORS_API_KEY to your env


### 5. Version bump workflow

When releasing new versions, update version in ALL manifests:
- `SKILL.md` frontmatter `version:`
- `gemini-extension.json` `version`
- `plugins/last30days/.claude-plugin/plugin.json` `version`
- `.claude-plugin/marketplace.json` plugins[0].version

Consider: a `scripts/bump-version.sh` that updates all four in one command.

## Open Question: Symlinks in Plugin Cache

**Risk:** When Claude Code installs a plugin, it clones the repo into `~/.claude/plugins/cache/`. Git preserves symlinks on macOS/Linux, so `plugins/last30days/skills/last30days/SKILL.md -> ../../../../SKILL.md` should resolve correctly because the full repo is cloned.

**Mitigation if symlinks fail:** Replace symlinks with a small build step in sync.sh that copies SKILL.md into the plugin directory. Or just copy the file and accept the duplication in the plugin directory (since the plugin cache is a read-only clone anyway - drift only matters in the source repo, not the installed copy).

**Test:** After implementing, verify with `git clone` into a temp dir and check symlink resolution.

## Acceptance Criteria

- [ ] `.claude-plugin/marketplace.json` exists with correct schema
- [ ] `plugins/last30days/.claude-plugin/plugin.json` exists
- [ ] `plugins/last30days/skills/last30days/SKILL.md` resolves to root SKILL.md
- [ ] `plugins/last30days/scripts` resolves to root scripts/
- [ ] README has plugin install instructions
- [ ] `/plugin marketplace add mvanhorn/last30days-skill` works
- [ ] `/plugin install last30days@last30days-skill` works
- [ ] `/last30days test topic` works after plugin install
- [ ] Standalone install (git clone to ~/.claude/skills/) still works
- [ ] Gemini CLI install still works

## User Experience After Publishing

One-time setup