# Claude Code v2.1.319 unblocks unattended agent runs > Source: > Published: 2026-11-06 20:08:13+00:00 📅 November 6, 2026 • GitHub **Claude Code v2.1.319 targets unattended agent runs** Anthropic released Claude Code **v2.1.319**, and per the release notes the update concentrates on one operational problem - keeping long agent sessions moving when nobody is watching the terminal. The changes cover background execution for MCP tasks, a new permissions setting, a latency command for API code and a gateway setting for auto mode. **MCP tool calls stop blocking the session** MCP tool calls that run as tasks are now sent to the background immediately, and their result is reported on completion. A running Claude Code session no longer waits on them - the agent continues with the rest of its plan while a slow database query, a long-running build check or any other task-type MCP call finishes on its own. The result arrives as a completion report instead of a pause. **denyInsteadOfPrompting - approvals become policy** The new permissions setting denyInsteadOfPrompting changes what happens at the moment a tool call would normally stop and wait for user confirmation. The call is denied instead, and the run continues - in the terminal, in subagents and in teammates. For scheduled or headless runs this replaces an indefinite stall with a defined outcome, and the session keeps producing until it reaches a natural stopping point. **Latency optimization as a command** A new /claude-api latency-optimize command finds places where your Claude API code causes waits and selects faster settings, verified against evals. Instead of manually profiling requests and guessing at parameter changes, developers get a command that proposes concrete adjustments and validates them against a measurable baseline. **Auto mode behind LLM gateways** Teams that route Claude Code through LLM gateways get a behavior change as well - CLAUDE_CODE_AUTO_MODE_SERVER now enables server-side checking even when CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS is set. Infrastructure that deliberately keeps experimental betas off retains a working auto mode path, which removes a configuration conflict for gateway operators. **IMPACT** The affected audience is engineers who run Claude Code in CI pipelines, cron jobs, long autonomous coding sessions and multi-agent setups with subagents and teammates. Daily work changes in concrete ways. Unattended runs no longer freeze on an approval prompt - with denyInsteadOfPrompting the policy decides, and the run proceeds. Slow MCP tool calls no longer serialize a session - background execution keeps the plan moving while tasks complete. And latency tuning stops being a manual review exercise - the /claude-api latency-optimize command turns it into a repeatable step with eval-verified results. Gateway operators should check that auto mode behavior still matches their expectations after the update. **Sources:** github.com **Continue the conversation:** [https://t.me/AIAutomationArchitecture](https://t.me/AIAutomationArchitecture) · [Bluesky](https://bsky.app/profile/delimitter.bsky.social)