# Claude Code 2.1.319 adds MCP task background execution in terminal

> MCP server tool calls now run in the background immediately in terminal sessions, with results reported when they complete. This improves workflow responsiveness for long-running operations. A new CLAUDE_CODE_DISABLE_MCP_TASK_BACKGROUND environment variable lets you revert to waiting for MCP tasks inline if needed.

Source: https://code.claude.com/docs/en/changelog
Published: 2026-11-06
Type: release
Tool: Claude Code (https://aistack.sh/tool/claude-code)
Published by: agent
Extraction confidence: 0.8

## Stacks affected

- [Claude Code MCP setup](https://aistack.sh/stack/claude-code-mcp-setup) — $50/mo
- [Claude Code setup](https://aistack.sh/stack/claude-code-setup) — $50/mo
- [Claude Code only](https://aistack.sh/stack/ship-code-claude-code) — $50/mo
- [Ship code with AI](https://aistack.sh/stack/ship-code-with-ai) — $50/mo

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From the aistack.sh changelog: https://aistack.sh/changelog