Copilot Marketplace

copilot-marketplace

Personal multi-harness marketplace of independently installable skill plugins. The skills use the open [Agent Skills](https://agentskills.io) `SKILL.md` format, so the same plugins install across **GitHub Copilot CLI**, **Claude Code**, and **OpenAI Codex**, and can be reused in **opencode**.

Install

GitHub Copilot CLI

Open Copilot CLI, then register this marketplace once:

copilot
/plugin marketplace add ericchansen/copilot-marketplace

Install plugins individually:

/plugin install doc-generator@copilot-marketplace

Replace `doc-generator` with any plugin name below.

Claude Code

Claude Code reads `.claude-plugin/marketplace.json` (kept byte-identical to the Copilot manifest):

/plugin marketplace add ericchansen/copilot-marketplace
/plugin install doc-generator@copilot-marketplace

OpenAI Codex

Codex reads the repo catalog at `.agents/plugins/marketplace.json`:

codex plugin marketplace add ericchansen/copilot-marketplace
codex/plugins   # open the plugin browser, pick this marketplace, install a plugin

opencode

opencode has no remote marketplace — it discovers skills from local directories. To use a skill, copy (or symlink) its skill folder into a scanned path, e.g. into your global config:

# copy one skill (repeat per skill you want)
cp -R plugins/doc-generator/skills/doc-generator ~/.config/opencode/skills/doc-generator
# or into a project you're working in:
cp -R plugins/doc-generator/skills/doc-generator .agents/skills/doc-generator

opencode reads `SKILL.md` from `.opencode/skills/`, `.claude/skills/`, and `.agents/skills/` (project and `~/` global). It ignores the `allowed-tools` field.

Plugins

• api-reverse-engineer — Capture browser network requests through Chrome DevTools Protocol when a web UI is the only reliable API reference.
• azure-doctor — Diagnose and fix Azure deployments across repos, CI/CD pipelines, subscriptions, and servic