Connect Claude Code to tools via MCP changedmcp
Upstream edited this page at 28 Oct 2026 19:31 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 28 Oct 2026 19:37 UTC.
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467467To change or turn off automatic backgrounding:
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469469* Set the [`CLAUDE_CODE_MCP_AUTO_BACKGROUND_MS`](https://code.claude.com/docs/en/env-vars) environment variable in milliseconds to change the threshold, or set it to `0` to turn automatic backgrounding off. With `0`, Claude also [waits for MCP tasks](#make-claude-wait-for-the-result-of-an-mcp-task) in an interactive session
470* Set [`CLAUDE_CODE_DISABLE_BACKGROUND_TASKS`](https://code.claude.com/docs/en/env-vars) to `1`, which turns it off together with background commands and background subagents
470* Set [`CLAUDE_CODE_DISABLE_BACKGROUND_TASKS`](https://code.claude.com/docs/en/env-vars) to `1` to turn off automatic backgrounding and [background commands](https://code.claude.com/docs/en/tools-reference.md#background-commands)
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472472Some calls never move to the background:
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