Claude Code v2.1.319

Claude Code v2.1.319 adds MCP task backgrounding in the terminal, a denyInsteadOfPrompting permission setting, /claude-api latency-optimize, and many auto-mode, gateway, and permission fixes.

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PaidProprietary (© Anthropic PBC; use subject to Anthropic’s Commercial Terms)TypeScript (repo)★ 154,868 (as of 2026-11-07)by Anthropic

Why it matters

For developers and teams running Claude Code in the terminal, behind LLM gateways, or with MCP servers who need clearer auto-mode behavior and fewer stuck MCP or permission cases.

What's new

MCP tools that run as tasks can move to the background in the terminal (disable with CLAUDE_CODE_DISABLE_MCP_TASK_BACKGROUND); MCP tasks also work without feature-flag fetching.
New permissions.denyInsteadOfPrompting setting denies tool calls that would wait on a prompt so the turn continues.
New /claude-api latency-optimize finds where Claude API code makes users wait and tries faster settings against your eval.
Auto mode behind gateways: clearer server-check behavior via CLAUDE_CODE_AUTO_MODE_SERVER; CLAUDE_CODE_DISABLE_FEATURE_FLAGS stops flag fetching without turning off telemetry.
Notable fixes include MCP handshake/resume bugs, /diff with a HEAD file or folder, slash commands after leading whitespace, and several Bash permission and sandbox issues.

Taken from the project's own release notes. Claims about speed or accuracy are the maker's unless stated otherwise.

Try it if: You use Claude Code with MCP servers or auto mode and want the background-task and permission improvements.

Worth knowing: Release notes are very long; only the main additions and a sample of fixes are summarized here.

Quick facts

Pricing	Requires a Claude account or Anthropic API access (plan details not checked)not verified
Free or paid	Paid
License	Proprietary (© Anthropic PBC; use subject to Anthropic’s Commercial Terms)
Language	TypeScript (repo)
Platform	macOS, Linux, Windows; terminal, IDE, desktop, cloud sessions
GitHub stars	★ 154,868 (as of 2026-11-07)
Maker	Anthropic

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What we couldn't verify

highlights (only the first sections of the long notes were read)
quick_facts.pricing

Checked 2026-11-07 from the release notes's own pages. Prices and star counts change, so confirm on the official site. Listing here is not a ranking or an endorsement.