Claude Code Changelog (@ClaudeCodeLog) header
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UNOFFICIAL – but tolerated – bot posting Claude Code CLI, feature flag & prompt changes. Full CC history in github repo.

Joined August 2025
Photo by Claude Code Changelog (@ClaudeCodeLog)Photo by Claude Code Changelog (@ClaudeCodeLog)Photo by Claude Code Changelog (@ClaudeCodeLog)Photo by Claude Code Changelog (@ClaudeCodeLog)Photo by Claude Code Changelog (@ClaudeCodeLog)Photo by Claude Code Changelog (@ClaudeCodeLog)Photo by Claude Code Changelog (@ClaudeCodeLog)Photo by Claude Code Changelog (@ClaudeCodeLog)Photo by Claude Code Changelog (@ClaudeCodeLog)Photo by Claude Code Changelog (@ClaudeCodeLog)
Friends, @marc_krenn here. I haven't updated @ClaudeCodeLog in a while, and I'd love to hear what you'd like to see improved. Anything I could change to make the account more useful, relevant, fun or interesting to you? Really appreciate any feedback & have a nice weekend! :)
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Claude Code 2.1.323 is about to be released #cccnext
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Claude Code 2.1.322 is about to be released #cccnext
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Claude Code 2.1.321 is about to be released #cccnext
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Claude Code 2.1.319 is about to be released #cccnext
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Claude Code 2.1.318 is about to be released #cccnext
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Claude Code 2.1.317 is about to be released #cccnext
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Claude Code 2.1.316 is about to be released #cccnext
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Claude Code 2.1.315 is about to be released #cccnext
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Claude Code 2.1.314 is about to be released #cccnext
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Claude Code 2.1.312 is about to be released #cccnext
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Claude Code 2.1.311 is about to be released #cccnext
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Claude Code 2.1.310 is about to be released #cccnext
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Claude Code 2.1.309 is about to be released #cccnext
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Claude Code 2.1.308 has been released. 1 CLI change Highlights: • CLI bug fixes and reliability improvements that reduce failures and produce smoother, more stable behavior Further details in thread ↓
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Claude Code 2.1.308 is about to be released #cccnext
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Claude Code 2.1.307 has been released. 43 CLI changes, 1 system prompt change Highlights: • Added /claude-api api-version to switch Claude API code to 2026-10-21, enabling updated API behavior • Stop double HTTP MCP sends on disconnect; only idempotent/read-only tools retried to avoid duplicates • The /clear command now makes cleared conversations persist across restarts, preventing them from reappearing Full details are in thread ↓
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Claude Code CLI 2.1.307 changelog: New features: • Added /claude-api api-version to move Claude API code to API version 2026-10-21 • Added the claude_code.safety_event OpenTelemetry event for each tool call a permission rule, auto mode, a safety check, a hook or the sandbox stopped, prompted or sent back Fixes: • Fixed requests failing with a model-not-found error when CLAUDE_CODE_DISABLE_1M_CONTEXT is set and the model is an alias with the [1m] suffix, such as opus[1m] • Fixed the prompt-caching-scope beta header being sent behind custom ANTHROPIC_BASE_URL gateways and on Foundry, where it has no effect • Fixed MCP servers showing "needs authentication" in claude -p on macOS while the login keychain was locked; they now say why, and the next run after an unlock connects without a new sign-in • Fixed MCP servers being reported as timed out, and staying failed in headless runs, when a macOS or Linux computer went to sleep while they were connecting • Fixed HTTP MCP tool calls being sent twice when the connection closed mid-call; only read-only or idempotent tools are now retried • Fixed a turn sometimes starting without an SDK MCP server's latest tools when a background task was running • Fixed some "Autocompact is thrashing" errors in turns that read many PDF pages, images or other large tool results • Fixed /autocompact in cloud sessions going back to the default window after the session restarted • Fixed a conversation cleared with /clear sometimes coming back when a cloud or self-hosted runner session restarted • Fixed CLAUDE_STREAM_FIRST_BYTE_TIMEOUT_MS being ignored in Claude apps gateway sessions • Fixed telemetry from Claude Desktop sessions behind a Claude apps gateway being rejected when OTEL_EXPORTER_OTLP_HEADERS is set • Fixed /permissions > Recently denied not showing the denied shell command, and auto mode's local classifier ignoring an approval from there when it checks a retried command; approving a row now names the command, not its description • Fixed /help and the / command menu showing long model-facing descriptions for bundled skills such as /claude-api instead of their short descriptions • Fixed subagent transcripts recording placeholder token usage and an empty stop reason for streamed responses • Fixed model switches through the Agent SDK's setModel(), and apps built on it, being refused when the API took more than 5 seconds to confirm the model; Claude Code now waits up to 15 seconds • Fixed a background command stopped through a connected app (such as the desktop app archiving an idle session) being reported to Claude as stopped by the user; the notice now names its output file • Fixed WebFetch in Cowork cloud sessions reporting a tool error when a site answered with a 4xx status or a robots.txt refusal; it is now a normal result, as in local sessions • Fixed write tools on a directly configured GitHub MCP server showing a form that closed without creating anything in the desktop app's Code tab • Fixed Artifact tool reads failing with a connection reset when the server had closed a reused connection Improvements: • Improved recovery from unparseable tool calls: Claude Code now retries the call up to twice before ending the turn with an error • Improved fork subagents launched together: each is now told which launch is its own, so forks are much less likely to try to start each other's work • Improved browser sign-in: the success page now appears as soon as sign-in completes, without waiting for your account profile to load • Improved web search errors in cloud and self-hosted runner sessions: a search refused with a 403 that gives a reason now shows that reason instead of a generic "Authentication error" • Improved the time to the first reply in cloud sessions when one of the desktop app's MCP servers can't connect • Improved Remote Control connect time for sessions whose transcript contains large pasted images or PDF reads Other changes: • Self-hosted runner: Fixed sessions with --use-anthropic-git-proxy committing a .claude/settings.local.json left in the clone by an earlier session • Self-hosted runner: Fixed archiving or requeueing a session, or stopping the runner, during its checkout hook leaving the hook's processes running and the runner's slot held • Changed the notice Claude gets when the WebSearch budget is used up to also tell it not to query search engines in a browser or through computer use • Changed the axScreenReader setting and CLAUDE_AX_SCREEN_READER in a settings env block to apply only from user, managed or --settings settings (since 2.1.305) • Self-hosted runner: Changed checkout hooks to be stopped after 30 minutes by default, failing the session's setup; if yours needs longer, raise --checkout-hook-timeout-min or set it to 0 • Self-hosted runner: Changed the certificate file built for Anthropic-managed git to filter its trusted certificates as the CLI does; a [runner:warn] line gives the number left out • [VSCode] Added a notice on the microphone button when voice dictation stops by itself (15 seconds without recognized speech, or the 2-minute limit), saying why and that the text so far is kept • [VSCode] Fixed a long prompt expanded with Show more covering the whole chat panel: a pinned prompt is now capped at 40% of the panel and scrolls • [VSCode] Fixed part of a list item or table cell with LaTeX math pasting as a new list or table in rich text editors • [VSCode] Fixed dictation failing behind a TLS-inspecting proxy when NODE_EXTRA_CA_CERTS is set only in ~/.claude/settings.json; it now also follows CLAUDE_CODE_CERT_STORE • [VSCode] Changed the "still open somewhere else" notice to also cover a Claude process left over from an extension restart, which usually ends on its own within about 10 minutes • [VSCode] Changed voice dictation to filter its trusted certificates as the CLI does • [VSCode] Changed the extension's own requests to filter their trusted certificates as the CLI does, and to trust the NODE_EXTRA_CA_CERTS file named in the environment or in user settings • [Cloud sessions] Fixed the repository picker saying "No repositories match" while a search was still running; it now shows "Searching…" until the results arrive • [Cloud sessions] Fixed the "Waiting for a runner" status on self-hosted environments being cut off; with on-demand runners it now counts up from your last message and shows failed attempts • [Code Review] Added @claude review stop (also off and pause) to Code Review, ending an @claude review always subscription on a pull request without starting a new review Source: github.com/anthropics/claude…
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Claude Code 2.1.307 is about to be released #cccnext
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Claude Code 2.1.306 is now available. 2 CLI changes Highlights: • Fixed claude -p reporting 'Not logged in' in cloud sessions without env vars, restoring login status • Fixed API errors being replaced by 'prompt is too long' in MCP-heavy sessions, showing original API errors More details in thread ↓
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Claude Code CLI 2.1.306 changelog: Fixes: • Fixed claude -p inside cloud sessions reporting "Not logged in" when started without the session's environment variables • Fixed an API error being replaced by "prompt is too long", and an unneeded compaction, in sessions with many MCP tools Source: github.com/anthropics/claude…
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Claude Code 2.1.306 is about to be released #cccnext
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