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.

Read this before changing anything in:

• src/vs/platform/agentHost/node/agentHostCustomizationEnablementService.ts
• src/vs/platform/agentHost/node/shared/customizationEnablementGate.ts
• src/vs/platform/agentHost/common/customizationEnablement.ts
• the per-provider customization paths under node/copilot/, node/claude/, node/codex/

The mental model

Enablement is a list of scoped decisions, not a boolean

A plugin or MCP server carries enablement?: CustomizationEnablement[] — an ordered list of decisions, most specific first: