Claude Code 2.1.270

UpdateSep 12, 2026VerifiedAdded Sep 22, 2026

What's changed Fixed read-only git commands in Bash unexpectedly asking for permission after a session had been running for a while (regression in 2.1.269)

LLMs Security Coding agents

Read Anthropic's release notes

https://github.com/anthropics/claude-code/releases/tag/v2.1.270

Summaries of vendors' own notes. Product names and logos belong to their owners; logos via logo.dev.

More Claude Code releases

Claude CodeSep 14, 2026

Claude Code 2.1.271

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...

UpdateAI agentsLLMsGovernanceSource

Claude CodeSep 15, 2026

Claude Code 2.1.273

What's changed Added x-claude-code-request-class , x-claude-code-agent-type , x-claude-code-prev-tool-durations , x-claude-code-compaction and x-claude-code-context-compacted request headers for LLM gateways; opt in with CLAUDE_CODE_GATEWAY_HINT_HEADERS=1 Added a notification when an MCP server disconnects mid-session and automatic reconnection gives up...

UpdateAI agentsLLMsMCPSource

Claude CodeSep 15, 2026

Claude Code 2.1.272

What's changed Bug fixes and reliability improvements

UpdateLLMsCoding agentsSource

Claude CodeSep 17, 2026

Claude Code 2.1.275

What's changed Added the signed-in account to Claude apps gateway sign-in: when the gateway names it, you confirm it before the credential is saved, and /status shows it Added a send-now key (ctrl+enter, or ctrl+x ctrl+s) that interrupts the current turn and sends all queued messages at once; sent and queued messages show in gray until the model receives...

UpdateLLMsMCPStreamingSource

Claude CodeSep 17, 2026

Claude Code 2.1.274

What's changed Added a visible warning when memory usage is critical, with steps to free memory or restart safely Added CLAUDE_CODE_MCP_STARTUP_WAIT_MS to bound how long the first non-interactive turn waits for connecting MCP servers ( 0 = don't wait) Added effort attribute to the claude_code.llm_request OpenTelemetry trace span, matching the api_request...

UpdateAI agentsLLMsMCPSource

Claude CodeSep 18, 2026

Claude Code 2.1.277

What's changed Added AGENTS.md support: in a project with no CLAUDE.md, Claude Code reads AGENTS.md instead; change it under "Project instructions" in /config (not yet on Bedrock, Vertex or Foundry) Added CLAUDE_GATEWAY_PROXY_IS_EGRESS_BOUNDARY=1 for Claude apps gateways whose only egress is a forward proxy: every outbound request hands the proxy the...

UpdateAI agentsLLMsStreamingSource

Claude CodeSep 18, 2026

Claude Code 2.1.276

What's changed Fixed every request failing with 400 … Input tag 'advisor_20260301' when ANTHROPIC_BASE_URL points at a proxy or gateway (2.1.275 regression)

UpdateLLMsGovernanceCoding agentsSource

Claude CodeSep 19, 2026

Claude Code 2.1.278

What's changed Changed auto mode for Claude API and Enterprise users, and on Bedrock, Vertex, Foundry and gateways, to default to the server-side classifier, which does not charge for classifier overhead ( CLAUDE_CODE_AUTO_MODE_SERVER=0 opts out on Bedrock, Vertex, Foundry and gateways); warns on billed fallback.

UpdateLLMsPricingDeveloper toolsSource