agent-plugins

A Claude Code plugin marketplace holding cross-repo agent skills and commands.

Project-specific skills belong in the project — under .github/skills/, where they travel with the repository and are visible to every agent working in it, or under .claude/skills/, which Claude Code alone reads. This repository is for the skills that follow me between repositories instead.

What makes these skills different is that every one honors project-local overrides without being forked. A skill's first step looks for a thin override file in the consuming project — .claude/skills/<name>/SKILL.md, then .github/skills/<name>/SKILL.md, then any SKILL.md whose frontmatter name matches the skill, wherever the project keeps agent skills — and applies the first one it finds on top, with the project file winning where they conflict. The override holds only that project's changes and additions; a vendored copy of the skill itself never counts as one. A project adapts a skill by dropping in a delta file, never by maintaining a forked full copy. The jcouball-marketplace plugin ships commands for setting that up.

Install

/plugin marketplace add jcouball/agent-plugins
/plugin install jcouball-writing@jcouball
/plugin install jcouball-github@jcouball
/plugin install jcouball-marketplace@jcouball
/plugin install jcouball-testing@jcouball

Run these once per machine. They are Claude Code slash commands. The VS Code extension has no /plugin; it has /plugins, which opens the graphical manager. The same steps also run from a terminal:

claude plugin marketplace add jcouball/agent-plugins
claude plugin install jcouball-writing@jcouball
claude plugin install jcouball-github@jcouball
claude plugin install jcouball-marketplace@jcouball
claude plugin install jcouball-testing@jcouball

Update

claude plugin marketplace update jcouball
claude plugin update jcouball-writing@jcouball
claude plugin update jcouball-github@jcouball
claude plugin update jcouball-marketplace@jcouball
claude plugin update jcouball-testing@jcouball

Refresh the marketplace first. Without it, update reads a stale cache and reports the plugin as already current. The plugin name has to carry the marketplace, <plugin>@jcouball, or the command reports the plugin as not found.

A running session keeps the version it started with until it is told otherwise. Run /reload-plugins to activate the new version in place, or restart Claude Code.

Plugins

jcouball-writing

jcouball-github

jcouball-testing

The plugin's README says which skill holds the rules for which kind of spec.

jcouball-marketplace

Using these outside Claude Code

The .claude-plugin/ manifests are a thin veneer. The content underneath is a plain skills/<name>/SKILL.md tree, which other agents read directly. GitHub Copilot discovers skills per repository under .github/skills/, so reaching it means vendoring the directory into the consuming repository rather than installing this one.

Attribution

unslop is derived from poteto's pstack plugin and used under the MIT license. See NOTICE.md for the full attribution and the upstream commit it was taken from.

License

MIT. See LICENSE.

{
  "$schema": "https://anthropic.com/claude-code/marketplace.schema.json",
  "name": "jcouball",
  "description": "James Couball's agent plugins: cross-repo skills and commands for writing, explaining, and maintaining Ruby open source projects.",
  "owner": {
    "name": "James Couball"
  },
  "plugins": [
    {
      "name": "jcouball-writing",
      "description": "Writing and explanation tools. Strips AI tells from prose while keeping reference docs dry, and explains technical subjects in plain language without dropping the real terms.",
      "author": {
        "name": "James Couball"
      },
      "category": "development",
      "source": "./plugins/writing",
      "homepage": "https://github.com/jcouball/agent-plugins"
    },
    {
      "name": "jcouball-github",
      "description": "GitHub pull request workflow tools. Resolves PR review feedback and suppressed Copilot comments, folds fixes into the commits that introduced them, requests fresh Copilot reviews, iterates feedback rounds until a review comes back clean, and rebases a branch onto the default branch without opening an editor. Audits repository settings and agent guidance against a guardrails baseline.",
      "author": {
        "name": "James Couball"
      },
      "category": "development",
      "source": "./plugins/github",
      "homepage": "https://github.com/jcouball/agent-plugins"
    },
    {
      "name": "jcouball-marketplace",
      "description": "Commands for maintaining the jcouball marketplace: promote a project skill into it, add a project-local override file, scaffold a new skill with the overrides contract, and vendor or update third-party skills.",
      "author": {
        "name": "James Couball"
      },
      "category": "development",
      "source": "./plugins/marketplace",
      "homepage": "https://github.com/jcouball/agent-plugins"
    },
    {
      "name": "jcouball-testing",
      "description": "Testing vocabulary and standards. A guide that defines the terms for talking about tests and how to choose which kind to write, the RSpec base standards every spec follows with the unit, integration, and system standards built on them, each citing the guide for the reasoning.",
      "author": {
        "name": "James Couball"
      },
      "category": "development",
      "source": "./plugins/testing",
      "homepage": "https://github.com/jcouball/agent-plugins"
    }
  ]
}