Extend Claude Code changedfeatures-overview
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1919* **[Code intelligence](/docs/en/tools-reference#lsp-tool-behavior)** connects Claude to a language server for symbol-level navigation and live type errors
2020* **[MCP](/docs/en/mcp)** connects Claude to external services and tools
2121* **[Subagents](/docs/en/sub-agents)** run their own loops in isolated context, returning summaries
22* **[Agent teams](/docs/en/agent-teams)** coordinate multiple independent sessions with shared tasks and peer-to-peer messaging
22* **[Agent teams](/docs/en/agent-teams)** coordinate multiple independent sessions with peer-to-peer messaging, plus a shared task list for [agents that have the Task tools](/docs/en/tools-reference#task-tool-availability)
2323* **[Hooks](/docs/en/hooks-guide)** run your script, HTTP request, prompt, or subagent when Claude Code reaches a lifecycle event
2424* **[Plugins](/docs/en/plugins)** and **[marketplaces](/docs/en/plugin-marketplaces)** package and distribute these features
2525
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123123 * **Subagents** run inside your session and report results back to your main context
124124 * **Agent teams** are independent Claude Code sessions that communicate with each other
125125
126 | Aspect | Subagent | Agent team |
127 | ----------------- | ------------------------------------------------ | --------------------------------------------------- |
128 | **Context** | Own context window; results return to the caller | Own context window; fully independent |
129 | **Communication** | Reports results back to the main agent only | Teammates message each other directly |
130 | **Coordination** | Main agent manages all work | Shared task list with self-coordination |
131 | **Best for** | Focused tasks where only the result matters | Complex work requiring discussion and collaboration |
132 | **Token cost** | Lower: results summarized back to main context | Higher: each teammate is a separate Claude instance |
126 | Aspect | Subagent | Agent team |
127 | ----------------- | ------------------------------------------------ | --------------------------------------------------------------------------------------------------------------------------------------------- |
128 | **Context** | Own context window; results return to the caller | Own context window; fully independent |
129 | **Communication** | Reports results back to the main agent only | Teammates message each other directly |
130 | **Coordination** | Main agent manages all work | Self-coordination through messages, plus a shared task list for [agents that have the Task tools](/docs/en/tools-reference#task-tool-availability) |
131 | **Best for** | Focused tasks where only the result matters | Complex work requiring discussion and collaboration |
132 | **Token cost** | Lower: results summarized back to main context | Higher: each teammate is a separate Claude instance |
133133
134134 **Use a subagent** when you need a quick, focused worker: research a question, verify a claim, review a file. The subagent does the work and returns a summary. Your main conversation stays clean.
135135
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