Claude Code gains a 'fast mode' in remote sessions, mouse support for config, and granular

EXHIBIT 1355 · URGENT

Sep 14, 2026 22:20 UTC github_releases+npm+pages https://raw.githubusercontent.com/anthropics/claude-code/main/CHANGELOG.md

Claude Code gains a 'fast mode' in remote sessions, mouse support for config, and granular `allowed_domains` for sandboxed commands, alongside numerous bug fixes and a bump to v2.1.271.

READY TO POST:

claude code just got a fast mode for remote sessions! looks like it'll let orgs decide where to apply it, or use `/fast` in session.

anthropic's claude code v2.1.271 is out, with some neat updates like mouse support in the config panel and per-command `allowed_domains` for better sandboxing.

[MERGED across 3 sources: github_releases, npm, pages] shared signal: claude-code --- npm :: @anthropic-ai/claude-code --- @anthropic-ai/claude-code 2.1.270 -> 2.1.271: +11 strings, -11 strings, 4 flagged as interesting [sentence] (4) + adds one local media, PDF, font, or text file to an existing artifact — pass `url` and `file_path`. + manage live-update subscriptions that notify a session when an artifact is republished elsewhere, and those aren + s artifact watches (pass `url` to check one). + s own Slack channel can come back in full as untrusted content) — see **Calls**. --- github_releases :: anthropics/claude-code --- anthropics/claude-code release: v2.1.271 name: v2.1.271 published: 2026-09-14T22:12:54Z url: https://github.com/anthropics/claude-code/releases/tag/v2.1.271 ## What's changed - Added fast mode in Claude Code Remote sessions (cloud and self-hosted runners): the host's fast-mode setting or `/fast` typed in the session applies where your organization allows it - Added mouse support to the `/config` panel in fullscreen mode: the wheel scrolls the settings list, a click on a setting's value changes it, and the row under the pointer is highlighted - Added `claude self-hosted-runner --drain-marker-file <path>`: when that file exists at a SIGTERM drain, the runner reports its exit to the server as a host drain (telemetry only) - Added per-command `allowed_domains` to Bash, PowerShell and Monitor in auto mode with sandboxing: the hosts a command needs are reviewed with it and opened for it alone; other hosts are refused - Added `omitClaudeMd` to agent frontmatter and `--agents` JSON, letting custom and plugin subagents run without user, project and local CLAUDE.md files; managed policy files still load - Added `--accept-command <sha256>` to `claude plugin install` and `claude plugin update` to accept exactly the command a previous `--json` run displayed, instead of `-y` - Added support for a `multiplier` above 1, up to 10, in the `modelPrici