Claude Code Release Notes
Complete version history of Claude Code releases, from early beta versions to the latest stable release. Each version includes feature additions, improvements, bug fixes, and links to relevant documentation. Features are documented in their first release version to help track when specific functionality became available.
Relevant posts: Plan Mode|Auto-Accept Permissions|Dangerous Skip Permissions
v1.0.54
- Hooks: Added UserPromptSubmit hook and the current working directory to hook inputs
- Custom slash commands: Added argument-hint to frontmatter
- Windows: OAuth uses port 45454 and properly constructs browser URL
- Windows: mode switching now uses alt + m, and plan mode renders properly
- Shell: Switch to in-memory shell snapshot to file-related errors
See Also: Hooks|Custom Slash Commands|Windows Installation
v1.0.53
- Updated @-mention file truncation from 100 lines to 2000 lines
- Add helper script settings for AWS token refresh: awsAuthRefresh (for foreground operations like aws sso login) and awsCredentialExport (for background operation with STS-like response).
See Also: Configuration
v1.0.52
- Added support for MCP server instructions
See Also: MCPs
v1.0.51
- Added support for native Windows (requires Git for Windows)
- Added support for Bedrock API keys through environment variable AWS_BEARER_TOKEN_BEDROCK
- Settings: /doctor can now help you identify and fix invalid setting files
--append-system-prompt
can now be used in interactive mode, not just --print/-p.- Increased auto-compact warning threshold from 60% to 80%
- Fixed an issue with handling user directories with spaces for shell snapshots
- OTEL resource now includes os.type, os.version, host.arch, and wsl.version (if running on Windows Subsystem for Linux)
- Custom slash commands: Fixed user-level commands in subdirectories
- Plan mode: Fixed issue where rejected plan from sub-task would get discarded
See Also: Plan Mode|Windows Installation|Custom Slash Commands
v1.0.48
- Fixed a bug in v1.0.45 where the app would sometimes freeze on launch
- Added progress messages to Bash tool based on the last 5 lines of command output
- Added expanding variables support for MCP server configuration
- Moved shell snapshots from /tmp to ~/.claude for more reliable Bash tool calls
- Improved IDE extension path handling when Claude Code runs in WSL
- Hooks: Added a PreCompact hook
- Vim mode: Added c, f/F, t/T
See Also: Hooks
v1.0.45
- Redesigned Search (Grep) tool with new tool input parameters and features
- Disabled IDE diffs for notebook files, fixing "Timeout waiting after 1000ms" error
- Fixed config file corruption issue by enforcing atomic writes
- Updated prompt input undo to Ctrl+_ to avoid breaking existing Ctrl+U behavior, matching zsh's undo shortcut
- Stop Hooks: Fixed transcript path after /clear and fixed triggering when loop ends with tool call
- Custom slash commands: Restored namespacing in command names based on subdirectories. For example, .claude/frontend/component.md is now /frontend:component, not /component.
See Also: Custom Slash Commands|Hooks
v1.0.44
- New
/export
command lets you quickly export a conversation for sharing - MCP: resource_link tool results are now supported
- MCP: tool annotations and tool titles now display in /mcp view
- Changed Ctrl+Z to suspend Claude Code. Resume by running
fg
. Prompt input undo is now Ctrl+U.
See Also: MCPs|Suspend/Resume
v1.0.43
- Fixed a bug where the theme selector was saving excessively
- Hooks: Added EPIPE system error handling
See Also: Hooks
v1.0.42
- Added tilde (
~
) expansion support to/add-dir
command
See Also: /add-dir FAQ
v1.0.41
- Hooks: Split Stop hook triggering into Stop and SubagentStop
- Hooks: Enabled optional timeout configuration for each command
- Hooks: Added "hook_event_name" to hook input
- Fixed a bug where MCP tools would display twice in tool list
- New tool parameters JSON for Bash tool in
tool_decision
event
See Also: Hooks
v1.0.40
- Fixed a bug causing API connection errors with UNABLE_TO_GET_ISSUER_CERT_LOCALLY if
NODE_EXTRA_CA_CERTS
was set
v1.0.39
- New Active Time metric in OpenTelemetry logging
v1.0.38
- Released hooks. Special thanks to community input in Github Issues
See Also: Hooks
v1.0.37
- Remove ability to set
Proxy-Authorization
header via ANTHROPIC_AUTH_TOKEN or apiKeyHelper
v1.0.36
- Web search now takes today's date into context
- Fixed a bug where stdio MCP servers were not terminating properly on exit
See Also: MCPs
v1.0.35
- Added support for MCP OAuth Authorization Server discovery
See Also: MCPs
v1.0.34
- Fixed a memory leak causing a MaxListenersExceededWarning message to appear
v1.0.33
- Improved logging functionality with session ID support
- Added undo functionality (Ctrl+Z and vim 'u' command)
- Improvements to plan mode
See Also: Plan Mode
v1.0.32
- Updated loopback config for litellm
- Added forceLoginMethod setting to bypass login selection screen
See Also: Configuration
v1.0.31
- Fixed a bug where ~/.claude.json would get reset when file contained invalid JSON
v1.0.30
- Custom slash commands: Run bash output, @-mention files, enable thinking with thinking keywords
- Improved file path autocomplete with filename matching
- Added timestamps in Ctrl-r mode and fixed Ctrl-c handling
- Enhanced jq regex support for complex filters with pipes and select
See Also: Slash Commands
v1.0.29
- Improved CJK character support in cursor navigation and rendering
v1.0.28
- Slash commands: Fix selector display during history navigation
- Resizes images before upload to prevent API size limit errors
- Added XDG_CONFIG_HOME support to configuration directory
- Performance optimizations for memory usage
- New attributes (terminal.type, language) in OpenTelemetry logging
See Also: Configuration
v1.0.27
- Streamable HTTP MCP servers are now supported
- Remote MCP servers (SSE and HTTP) now support OAuth
- MCP resources can now be @-mentioned
See Also: MCP Resources
v1.0.25
- Slash commands: moved "project" and "user" prefixes to descriptions
- Slash commands: improved reliability for command discovery
- Improved support for Ghostty
- Improved web search reliability
See Also: Slash Commands
v1.0.24
- Improved
/mcp
output - Fixed a bug where settings arrays got overwritten instead of merged
See Also: MCPs
v1.0.23
- Released TypeScript SDK:
import @anthropic-ai/claude-code
to get started - Released Python SDK:
pip install claude-code-sdk
to get started
See Also: Claude Code SDK
v1.0.22
- SDK: Renamed
total_cost
tototal_cost_usd
See Also: CC Usage
v1.0.21
- Improved editing of files with tab-based indentation
- Fix for
tool_use
without matchingtool_result
errors - Fixed a bug where stdio MCP server processes would linger after quitting Claude Code
v1.0.18
- Added
--add-dir
CLI argument for specifying additional working directories - Added streaming input support without require
-p
flag - Improved startup performance and session storage performance
- Added
CLAUDE_BASH_MAINTAIN_PROJECT_WORKING_DIR
environment variable to freeze working directory for bash commands - Added detailed MCP server tools display (
/mcp
) - MCP authentication and permission improvements
- Added auto-reconnection for MCP SSE connections on disconnect
- Fixed issue where pasted content was lost when dialogs appeared
See Also: Configuration | Additional Working Directories | MCPs
v1.0.17
- We now emit messages from sub-tasks in
-p
mode (look for theparent_tool_use_id
property) - Fixed crashes when the VS Code diff tool is invoked multiple times quickly
- MCP server list UI improvements
- Update Claude Code process title to display
claude
instead ofnode
v1.0.11
- Claude Code can now also be used with a Claude Pro subscription
- Added
/upgrade
for smoother switching to Claude Max plans - Improved UI for authentication from API keys and Bedrock/Vertex/external auth tokens
- Improved shell configuration error handling
- Improved todo list handling during compaction
See Also: Pricing | Model Comparison | Installation
v1.0.10
- Added markdown table support
- Improved streaming performance
v1.0.8
- Fixed Vertex AI region fallback when using
CLOUD_ML_REGION
- Increased default otel interval from 1s -> 5s
- Fixed edge cases where
MCP_TIMEOUT
andMCP_TOOL_TIMEOUT
weren't being respected - Fixed a regression where search tools unnecessarily asked for permissions
- Added support for triggering thinking non-English languages
- Improved compacting UI
See Also: Restarting Claude Code | Context Window Depletion
v1.0.7
- Renamed
/allowed-tools
->/permissions
- Migrated
allowedTools
andignorePatterns
from.claude.json
->settings.json
- Deprecated
claude config
commands in favor of editingsettings.json
- Fixed a bug where
--dangerously-skip-permissions
sometimes didn't work in--print
mode - Improved error handling for
/install-github-app
- Bugfixes, UI polish, and tool reliability improvements
See Also: Auto-Accept Permissions | Configuration
v1.0.6
- Improved edit reliability for tab-indented files
- Respect
CLAUDE_CONFIG_DIR
everywhere - Reduced unnecessary tool permission prompts
- Added support for symlinks in
@file
typeahead - Bugfixes, UI polish, and tool reliability improvements
See Also: Configuration
v1.0.1
- Added
DISABLE_INTERLEAVED_THINKING
to give users the option to opt out of interleaved thinking - Improved model references to show provider-specific names (Sonnet 3.7 for Bedrock, Sonnet 4 for Console)
- Updated documentation links and OAuth process descriptions
See Also: Configuration
v1.0.0
- Claude Code is now generally available
- Introducing Sonnet 4 and Opus 4 models
See Also: Model Comparison | Installation | Getting Started
v0.2.125
- Breaking change: Bedrock ARN passed to
ANTHROPIC_MODEL
orANTHROPIC_SMALL_FAST_MODEL
should no longer contain an escaped slash (specify / instead of %2F) - Removed
DEBUG=true
in favor ofANTHROPIC_LOG=debug
, to log all requests
See Also: Configuration
v0.2.117
- Breaking change:
--print
JSON output now returns nested message objects, for forwards-compatibility as we introduce new metadata fields - Introduced
settings.cleanupPeriodDays
- Introduced
CLAUDE_CODE_API_KEY_HELPER_TTL_MS
env var - Introduced
--debug
mode
v0.2.108
- You can now send messages to Claude while it works to steer Claude in real-time
- Introduced
BASH_DEFAULT_TIMEOUT_MS
andBASH_MAX_TIMEOUT_MS
env vars - Fixed a bug where thinking was not working in
-p
mode - Fixed a regression in
/cost
reporting - Deprecated MCP wizard interface in favor of other MCP commands
- Lots of other bugfixes and improvements
v0.2.107
CLAUDE.md
files can now import other files. Add@path/to/file.md
to./CLAUDE.md
to load additional files on launch
See Also: CLAUDE.md Supremacy
v0.2.106
- MCP SSE server configs can now specify custom headers
- Fixed a bug where MCP permission prompt didn't always show correctly
v0.2.105
- Claude can now search the web
- Moved system & account status to
/status
- Added word movement keybindings for Vim
- Improved latency for startup, todo tool, and file edits
v0.2.102
- Improved thinking triggering reliability
- Improved
@mention
reliability for images and folders - You can now paste multiple large chunks into one prompt
v0.2.100
- Fixed a crash caused by a stack overflow error
- Made db storage optional; missing db support disables
--continue
and--resume
v0.2.98
- Fixed an issue where auto-compact was running twice
v0.2.96
- Claude Code can now also be used with a Claude Max subscription
v0.2.93
- Resume conversations from where you left off from with
claude --continue
andclaude --resume
- Claude now has access to a Todo list that helps it stay on track and be more organized
v0.2.82
- Added support for
--disallowedTools
- Renamed tools for consistency:
LSTool
->LS
,View
->Read
, etc.
See Also: Auto-Accept Permissions | Configuration
v0.2.75
- Hit Enter to queue up additional messages while Claude is working
- Drag in or copy/paste image files directly into the prompt
@-mention
files to directly add them to context- Run one-off MCP servers with
claude --mcp-config <path-to-file>
- Improved performance for filename auto-complete
See Also: MCPs & Add-ons | Configuration
v0.2.74
- Added support for refreshing dynamically generated API keys (via
apiKeyHelper
), with a 5 minute TTL - Task tool can now perform writes and run bash commands
v0.2.72
- Updated spinner to indicate tokens loaded and tool usage
v0.2.70
- Network commands like
curl
are now available for Claude to use - Claude can now run multiple web queries in parallel
- Pressing ESC once immediately interrupts Claude in Auto-accept mode
v0.2.69
- Fixed UI glitches with improved Select component behavior
- Enhanced terminal output display with better text truncation logic
v0.2.67
- Shared project permission rules can be saved in
.claude/settings.json
v0.2.66
- Print mode (
-p
) now supports streaming output via--output-format=stream-json
- Fixed issue where pasting could trigger memory or bash mode unexpectedly
v0.2.63
- Fixed an issue where MCP tools were loaded twice, which caused tool call errors
v0.2.61
- Navigate menus with vim-style keys (
j
/k
) or bash/emacs shortcuts (Ctrl+n
/p
) for faster interaction - Enhanced image detection for more reliable clipboard paste functionality
- Fixed an issue where ESC key could crash the conversation history selector
v0.2.59
- Copy+paste images directly into your prompt
- Improved progress indicators for bash and fetch tools
- Bugfixes for non-interactive mode (
-p
)
v0.2.54
- Quickly add to Memory by starting your message with
#
- Press
ctrl+r
to see full output for long tool results - Added support for MCP SSE transport
v0.2.53
- New web fetch tool lets Claude view URLs that you paste in
- Fixed a bug with JPEG detection
v0.2.50
- New MCP "project" scope now allows you to add MCP servers to
.mcp.json
files and commit them to your repository
v0.2.49
- Previous MCP server scopes have been renamed: previous "project" scope is now "local" and "global" scope is now "user"
v0.2.47
- Press Tab to auto-complete file and folder names
- Press Shift + Tab to toggle auto-accept for file edits
- Automatic conversation compaction for infinite conversation length (toggle with
/config
)
See Also: Auto-Accept Permissions
v0.2.44
- Ask Claude to make a plan with thinking mode: just say 'think' or 'think harder' or even 'ultrathink'
v0.2.41
- MCP server startup timeout can now be configured via
MCP_TIMEOUT
environment variable - MCP server startup no longer blocks the app from starting up
v0.2.37
- New
/release-notes
command lets you view release notes at any time claude config add/remove
commands now accept multiple values separated by commas or spaces
v0.2.36
- Import MCP servers from Claude Desktop with
claude mcp add-from-claude-desktop
- Add MCP servers as JSON strings with
claude mcp add-json <n> <json>
See Also: MCPs & Add-ons | Configuration
v0.2.34
- Vim bindings for text input - enable with
/vim
or/config
v0.2.32
- Interactive MCP setup wizard: Run
claude mcp add
to add MCP servers with a step-by-step interface - Fix for some PersistentShell issues
v0.2.31
- Custom slash commands: Markdown files in
.claude/commands/
directories now appear as custom slash commands to insert prompts into your conversation - MCP debug mode: Run with
--mcp-debug
flag to get more information about MCP server errors
See Also: CLAUDE.md Supremacy | Slash Commands
v0.2.30
- Added ANSI color theme for better terminal compatibility
- Fixed issue where slash command arguments weren't being sent properly
- (Mac-only) API keys are now stored in macOS Keychain
v0.2.26
- New
/approved-tools
command for managing tool permissions - Word-level diff display for improved code readability
- Fuzzy matching for slash commands
See Also: Auto-Accept Permissions | Configuration
v0.2.21
- Fuzzy matching for
/commands