Copilot-plugins

A personal agent plugin marketplace for VS Code and GitHub Copilot CLI. Skills are distributed as agent plugins that can be discovered, installed, and updated directly from VS Code or the Copilot CLI.

Available plugins

Local plugins

Plugin	Skills	Description
conda-packaging	conda-forge, rattler-build	Conda packaging operations — fix failing builds, create new packages, migrate recipes, build conda packages
data-visualization	matplotlib-data-visualization, pydantic-evals	Chart design and data storytelling with matplotlib; evaluation of non-deterministic functions with pydantic-evals
typst	typst	Modern markup-based typesetting system for scientific documents, presentations, and math
sqlalchemy	sqlalchemy	Python SQL toolkit and ORM — engine management, declarative mapping, sessions, queries
human-writing-en	human-writing-en	English writing style that reads as human-authored, not AI-generated
joss-review	joss-review	Guide for reviewing Journal of Open Source Software (JOSS) submissions
presentation-design	presentation-design	Slide design and storytelling guidelines for all presentation tools
marimo	marimo-notebook, anywidget, marimo-batch, wasm-compatibility	Marimo reactive notebook skills — authoring, widgets, batch jobs, WASM compatibility
obsidian-cli	obsidian-cli	Interact with Obsidian vaults via the official CLI (v1.12+) — notes, search, tasks, properties, and more
okf	okf-update-notes	Author and maintain Open Knowledge Format (OKF) v0.1 vaults — summarize session knowledge and merge it into an OKF/Obsidian bundle
productivity	teach	Teaching and learning workspace — create lessons, reference docs, and track learning missions

External plugins

These reference upstream repositories directly:

Plugin	Source	Description
anthropic-skills	anthropics/skills	Document processing skills (PowerPoint, Word, Excel, PDF)
scientific-skills	k-dense-ai/claude-scientific-skills	Literature review, peer review, Polars DataFrame library
marimo-pair	marimo-team/marimo-pair	Marimo pair programming protocol for interacting with running marimo notebooks

For locally mirrored skills copied from upstream repositories, source attribution is stored in each plugin README under a bottom section named Upstream Sources (Local Path → Upstream URL → Synced Ref). The Synced Ref column records the upstream commit the local copy was last reconciled against and is maintained by the sync-copied-skills workflow.

Installation

VS Code

1. Enable agent plugins (preview feature):

   // settings.json
   "chat.plugins.enabled": true

2. Add this marketplace to your VS Code settings:

   // settings.json
   "chat.plugins.marketplaces": [
       "melund/skill-forge"
   ]

3. Open the Extensions view (Ctrl+Shift+X), type @agentPlugins in the search bar, and browse the available plugins. Select Install on any plugin you want to use.

Copilot CLI

# Register the marketplace
copilot plugin marketplace add melund/skill-forge

# Browse available plugins
copilot plugin marketplace browse melund-skill-forge

# Install a plugin
copilot plugin install conda-packaging@melund-skill-forge

Repository structure

.github/
  plugin/
    marketplace.json          # Marketplace manifest
plugins/
  conda-packaging/
    plugin.json               # Plugin manifest
    skills/
      conda-forge/            # SKILL.md + references/
      rattler-build/          # SKILL.md + references/
  data-visualization/
    plugin.json
    skills/
      matplotlib-data-visualization/
      pydantic-evals/
  typst/
    plugin.json
    skills/typst/             # SKILL.md + PROMPT.md + references/
  sqlalchemy/
    plugin.json
    skills/sqlalchemy/        # SKILL.md + PROMPT.md
  human-writing-en/
    plugin.json
    skills/human-writing-en/
  joss-review/
    plugin.json
    skills/joss-review/
  presentation-design/
    plugin.json
    skills/presentation-design/
  marimo/
    plugin.json
    skills/
      marimo-notebook/          # SKILL.md + references/
      anywidget/                # SKILL.md
      marimo-batch/             # SKILL.md + references/
      wasm-compatibility/       # SKILL.md + references/

Adding a new plugin

The easiest way to add plugins, skills, agents, hooks, or MCP servers is with the plugin-manager skill. In VS Code chat, invoke /plugin-manager and describe what you want to add. The skill walks you through the process — picking the right plugin, creating files, and updating the marketplace manifest.

/plugin-manager Add a new skill for Polars DataFrames
/plugin-manager Add an external plugin from owner/repo
/plugin-manager Add hooks to the conda-packaging plugin

Manual steps

1. Create a directory under plugins/<plugin-name>/ with a plugin.json manifest and a skills/ subdirectory.
2. Place SKILL.md files (with YAML frontmatter containing name and description) in skills/<skill-name>/.
3. Add the plugin entry to .github/plugin/marketplace.json.

See the plugin reference for the full plugin.json and marketplace.json schemas.