Overview

The Capsule Manager is the platform surface for managing MCP Interactive Capsules. Capsules are small, scoped UI surfaces attached to agent tools. They let tools expose interactive HTML/CSS/JS views, exchange events with the platform, and invoke platform tools on behalf of the agent.

Base URL / usage

Capsule Manager runs inside the platform shell:
Open programmatically:

Capsule lifecycle

Capsule surface

Endpoints / commands

JSON request / response examples

Capsule object

Send a capsule event

Response:

Invoke a platform tool from a capsule

Response:

Error codes