# customizations-in-the-agent-host

> Claude/Codex skill by [@microsoft](https://omgskills.com/library/microsoft/index.md) · 195k stars · Updated 2026-11-13

Architecture and hard-won debugging lessons for customization enablement (plugins, MCP servers, agents, skills, instructions) in the agent host. Use when changing how customizations are discovered, published, enabled/disabled, or handed to a provider SDK; when a customization shows the wrong enabled state in the UI; or when a disabled MCP server or plugin is still reaching the model.

Tags: editor, electron, microsoft, typescript, visual-studio-code

## Install

```sh
git clone https://github.com/microsoft/vscode /tmp/vscode && ln -s /tmp/vscode/.github/skills/customizations-in-the-agent-host ~/.claude/skills/customizations-in-the-agent-host
```

## From README

Customizations in the Agent Host Customizations are the plugins, MCP servers, agents, skills and instructions that an agent-host session exposes to a model. This skill covers enablement: how a customization's on/off state is decided, stored, published and enforced.

## Links

- HTML page: https://omgskills.com/library/microsoft/vscode/dot-github/skills/customizations-in-the-agent-host/
- GitHub: https://github.com/microsoft/vscode
- Author: [@microsoft](https://omgskills.com/library/microsoft/index.md)

## More from this repo

- [agent-host-logs](https://omgskills.com/library/microsoft/vscode/agent-host-logs/index.md) — Used to analyze Agent Host debug log exports.
   - [@microsoft](https://omgskills.com/library/microsoft/index.md) · 194k stars
- [chat-customizations-editor](https://omgskills.com/library/microsoft/vscode/chat-customizations-editor/index.md) — Used when working on the Chat Customizations editor — the management UI for agents, skills, instructions, hooks,...
   - [@microsoft](https://omgskills.com/library/microsoft/index.md) · 194k stars
- [act-on-feedback](https://omgskills.com/library/microsoft/vscode/act-on-feedback/index.md) — Act on user feedback attached to the current session.
   - [@microsoft](https://omgskills.com/library/microsoft/index.md) · 194k stars