How I Built a Plugin and Service for Claude Code Agent Teams

TL;DR: What This Article Covers Claude Code's Agent Teams (also known as Swarm mode) allow a Team Lead Agent to orchestrate multiple Sub-Agents working in parallel. This is a powerful capability — but it raises a question: when you have an external work tracking system, how do you automatically connect each Sub-Agent to your workflow without the Team Lead hand-writing boilerplate in every spawn prompt? The main goals of this article are: Introduce the Claude Code plugin ecosystem — Marketplace, Plugin Manifest, Hooks, Skills, and MCP configuration form a complete extension mechanism Use Chorus as a case study to show how an Agent-first task management platform can seamlessly integrate with Claude Code's multi-agent workflow through plugins Deep dive into Sub-Agent context injection — in multi-agent collaboration scenarios, ensuring each Sub-Agent automatically receives the correct working context is the key to whether a plugin can truly work in practice If you're considering building a