Claude Code v2.1.97 / Changelog

Pick an entry · j / k steps through

7 entries

New Featuresopen

`/dream` Slash Command [Gradual Rollout]#

What

A new user-invocable slash command for reflective memory consolidation — reviewing recent activity, synthesizing learnings into typed memory files, and pruning stale entries.

Usage

# Manual consolidation
/dream

# Schedule nightly consolidation
/dream nightly

Details

Aliases: /learn
Manual mode (/dream or /dream consolidate) runs an immediate memory consolidation pass
Schedule mode (/dream nightly) sets up a recurring cron job that runs consolidation overnight
The schedule persists across sessions (written to .claude/scheduled_tasks.json) and auto-expires after a configurable period
Cancel scheduled consolidation at any time
Gated behind the tengu_kairos_dream feature flag — availability may vary
Previously, only the background auto-dream mechanism existed (silently consolidating between sessions); this command gives users direct control

Evidence

Skill registration with name: "dream", aliases: ["learn"] (search for "Reflective memory consolidation") — WKA at line ~636587

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Brief Transcript View Mode #

What

A new condensed transcript display that collapses sequential tool-use messages into compact summaries showing tool counts and line-change statistics.

Details

When enabled, back-to-back tool calls between user prompts are collapsed into a single summary line (e.g., "5 reads, 2 edits, +40/-12 lines")
Individual tool categories tracked: read, search, bash, edit, git, MCP, hooks, and more
Togglable at runtime via the transcript UI
New briefTranscript state property controls the display mode

Evidence

Message collapsing function bd4 produces collapsed_read_search and grouped_tool_use objects (search for "collapsed_read_search")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

`viewMode` Configuration Setting #

What

A new setting to control the default transcript view mode on startup.

Usage

{
  "viewMode": "default"
}

Details

Options: "default", "verbose", "focus"
Set in your configuration file to control how the conversation transcript is displayed each time you launch Claude Code

Evidence

Schema definition viewMode: y.enum(["default", "verbose", "focus"]) (search for "Default transcript view mode on startup")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

v2.1.121 Focus View Requires Fullscreen Renderer

`refreshInterval` for Status Line #

What

A new configuration option to re-run status line commands at a regular interval, in addition to event-driven updates.

Usage

{
  "statusLine": {
    "refreshInterval": 30
  }
}

Details

Value is in seconds (minimum: 1)
Useful for status line commands that show time-varying data (e.g., build status, clock)

Evidence

Schema definition refreshInterval: y.number().min(1).optional() (search for "Re-run the status line command every N seconds")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Cedar Policy Language Syntax Highlighting #

What

Code blocks written in the Cedar policy language are now syntax-highlighted in Claude Code output.

Details

Recognizes cedar and cedarpolicy as language identifiers in fenced code blocks
Highlights keywords (permit, forbid, when, unless, if, then, else), built-in types (principal, action, resource, context), and standard Cedar constructs
Cedar is Amazon's authorization policy language — useful when working with AWS Verified Permissions or custom Cedar policies

Evidence

Language definition with name: "Cedar", aliases: ["cedarpolicy"] (search for "permit forbid when unless if then else in has like is")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

`--session-mirror` Flag (SDK Internal)#

What

A new CLI flag that enables transcript mirroring on stdout for SDK consumers.

Details

Emits transcript_mirror frames on the stdout JSON stream after each successful local transcript write
Designed for use by ProcessTransport when a sessionStore is configured — allows the parent process to capture and batch transcript entries
New transcript_mirror event type added to the SDK schema
Not intended for direct user invocation; primarily benefits SDK/API integrations

Evidence

CLI flag "--session-mirror" with description "Emit transcript_mirror frames on stdout" (search for "transcript_mirror")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

`excludeDynamicSections` SDK Option #

What

A new SDK configuration option that omits per-user dynamic sections from the cached system prompt.

Details

When true, working directory, auto-memory path, and other user-specific content are excluded from the system prompt and re-injected as the first user message instead
Lets cross-user prompt caching hit on a shared static prefix, significantly improving cache efficiency in multi-tenant deployments
New redirectedContextTokens field in the token usage response tracks how many tokens were redirected

Evidence

Schema property with full description (search for "omit per-user dynamic sections")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

23 entries

Improvementsopen

Buddy/Companion Feature Removed #

The entire Buddy/Companion system has been removed from Claude Code. This includes:

The /buddy command and companion creature generation
ASCII art companion display with species, hats, eyes, and rarity tiers
The companion reaction system that watched conversations and commented in speech bubbles
The companion mute/unmute toggle in the footer
The companion_intro dynamic section in system prompts
The buddy teaser notification ("Hatch a coding buddy") that prompted users to try /buddy
The LLM-powered companion personality generation using Claude API
The "Voice mode is now available" static footer notice (replaced by a tip — see below)

Evidence

Removed functions include hn8 (buddy_react API), eE_ (creature generation), w34 (companion_intro), tcK (conversation watcher) — search for "buddy_react" in v2.1.96 only

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

CJK Punctuation Support for Mentions and Slash Commands #

@mentions and /commands now recognize Chinese, Japanese, and Korean sentence-ending punctuation (。, 、, ？, ！) as valid word boundaries. Previously, typing @filename or /command immediately after CJK punctuation would not be recognized.

Evidence

Regex patterns updated from /(^|\s)/ to /(^|[\s。、？！])/ in mention and slash command parsers (search for "。、？！")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

v2.1.113 CJK Punctuation Support in Mentions

Zellij Terminal Multiplexer Detection #

Claude Code now detects the Zellij terminal multiplexer environment and reports it alongside TMUX and TERM_PROGRAM in diagnostic output. Some terminal features are gated to avoid conflicts with Zellij's own input handling.

Evidence

New check process.env.ZELLIJ (search for "ZELLIJ") — qk_ at line ~199074

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

v2.1.236 Zellij recognised as a terminal multiplexer

Warp Terminal Support Expanded #

Warp Terminal (WarpTerminal) has been added to an additional terminal capability detection list, extending its integration beyond the existing bundle ID mapping and display name.

Evidence

"WarpTerminal" appears in a new terminal identifier array in v2.1.97 (search for "WarpTerminal")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Voice Notice Replaced with Contextual Tip #

The persistent "Voice mode is now available · /voice to enable" footer notice has been replaced with a contextual tip ("Use /voice to enable push-to-talk dictation") that respects cooldown sessions and relevance checks. This reduces visual noise for users who don't use voice mode.

Evidence

New tip with id: "voice-mode", cooldownSessions: 10 (search for "Use /voice to enable push-to-talk dictation")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Bash Tool Security: `/dev/tcp` and `/dev/udp` Blocking #

Redirections targeting /dev/tcp or /dev/udp are now explicitly blocked as network connections. These Bash pseudo-device paths open network sockets and were previously not flagged by the safety checker.

Evidence

New safety message "Redirect involving /dev/tcp or /dev/udp opens a network connection" (search for "/dev/tcp")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Bash Tool: Environment Variable Validation #

The Bash tool now validates environment variable names in command prefixes using a regex pattern (/^([A-Za-z_][A-Za-z0-9_]*)/) and checks them against a safe-list. Commands that set non-safe-listed environment variables require explicit approval.

Evidence

New function fhz with env var validation regex and Ly6 safe-list checker (search for "A-Za-z_][A-Za-z0-9_]*")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

Bash Tool: Expanded Argument Parsing #

The Bash argument parser now handles additional flags for cut, paste, column, and awk commands, properly stripping their flag arguments to extract positional file paths for safety analysis.

Evidence

New lF1 flag-stripping function factory with --delimiter, --output-delimiter, --field-separator support (search for "--delimiter")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Conversation Branching Size Limit #

Conversation branching now validates the transcript file size before attempting to create a branch. If the transcript exceeds the size limit, a clear error message is shown: "Conversation transcript is too large to branch."

Evidence

Size check in QFK (search for "Conversation transcript is too large to branch")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

Improved Compaction Error Messages #

Compaction failure messages are now more specific:

"Compaction failed · attached media exceeds size limits" — when media attachments are too large
"Compaction failed · conversation could not be reduced below the context limit" — when the conversation itself is too long

Evidence

New error strings (search for "Compaction failed · attached media exceeds size limits")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

"Max Effort" Description Updated #

The "max" effort level description has been simplified from "Maximum capability with deepest reasoning (Opus 4.6 only)" to just "Maximum capability with deepest reasoning", reflecting that max effort is no longer restricted to Opus 4.6.

Evidence

String change in $p_ (search for "Maximum capability with deepest reasoning")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

Session Origin Tracking in Memory Files #

Memory files written via CLAUDE.md now include an originSessionId field in their YAML frontmatter, alongside the existing created timestamp. This helps trace which session originally created each memory entry.

Evidence

New frontmatter injection "originSessionId: " in function jE8 (search for "originSessionId")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Keybinding Components Replace Hardcoded Text #

Several UI elements that previously displayed hardcoded text like "Enter to apply", "Esc to go back", and "Ctrl+d to show debug info" now use structured keybinding components that respect custom key mappings. This means users who have remapped keys will see the correct bindings in the UI.

Evidence

Hardcoded "Enter to apply" replaced with J1 component; "Esc to go back" replaced with structured W1 component (search for "show debug info" and "hide debug info")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Improved Hook Evaluator: Transcript Truncation and Model Awareness #

Hook evaluators now truncate conversation transcripts to fit within the evaluator's context window and pass the correct model identifier. When truncation occurs, a marker is inserted: "[Earlier conversation truncated to fit the hook evaluator's context window — N earlier messages omitted...]"

Evidence

Function zQY with truncation logic (search for "Earlier conversation truncated to fit the hook evaluator's context window")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

"Routines" Configuration Section #

A new "routines" category has been added to the configuration/help system alongside existing sections like commands and workflows.

Evidence

"routines" added to configuration sections list (search for "routines")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Remote Skills Discovery Tracking #

The agent now tracks remotely-discovered skills (e.g., from MCP servers) via a discoveredRemoteSkills map, enabling better state management when skills become available or unavailable during a session.

Evidence

New discoveredRemoteSkills: new Map() field in agent state (search for "discoveredRemoteSkills")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

v2.1.172 CLAUDE_CODE_SKIP_PLUGIN_MCP_SERVERS

Managed Agents API Documentation #

Comprehensive documentation for the Managed Agents API has been embedded for the claude-developer-platform skill, covering Python, TypeScript, and cURL/HTTP usage with examples for environments, agents, sessions, SSE streaming, custom tool results, and interrupts.

Evidence

Documentation strings including "anthropic-beta: managed-agents-2026-04-01" (search for "Managed Agents")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

Agent Inter-Tool Narration Suppression #

Sub-agents (e.g., Task agents) now receive an explicit instruction: "Do not emit text between tool calls. Inter-tool narration is never shown to the user — go straight to the next tool call." This reduces wasted tokens on text the user never sees.

Evidence

Instruction string A9Y (search for "Do not emit text between tool calls")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Worktree Branch Creation: `--no-track`#

When creating worktree branches, the --no-track flag is now passed to prevent automatic upstream tracking, avoiding potential conflicts with remote branches.

Evidence

New "--no-track" argument in worktree creation (search for "--no-track")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Workflow Script File Write Permissions #

Files in the workflows/scripts directory for the current session are now automatically allowed for writing, removing the need for manual permission approval when Claude generates workflow scripts.

Evidence

Permission reason "Workflow script files for current session are allowed for writing" (search for "Workflow script files")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Upgrade Flow: Conditional "Switch to Team Plan" Label #

The upgrade prompt now shows "Switch to Team plan" instead of "Upgrade to Team plan" when the user is already on a plan, providing more contextually accurate wording.

Evidence

Conditional label X ? "Switch to Team plan" : "Upgrade to Team plan" (search for "Switch to Team plan")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Duplicate Key Detection in Virtual Message List #

A new diagnostic warning detects duplicate sibling keys in the virtual message list renderer, which could previously cause DOM node leaks via mapRemainingChildren overwrite.

Evidence

Warning message "VirtualMessageList: duplicate sibling keys" (search for "VirtualMessageList: duplicate sibling keys")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Read Tool: Absolute Paths Always Required #

The Read tool documentation now unconditionally requires absolute file paths. The previous conditional behavior (which sometimes allowed relative paths) has been removed for consistency.

Evidence

Read tool description change — removed conditional qk6() check, hard-codes "must be an absolute path" (search for "must be an absolute path")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

1 entry

Bug Fixesopen

#

Fixed unguarded promise chains in Chrome onboarding and session reconnection that could cause unhandled rejections (search for .catch(w6) in K4A and ABY)

Fixed text input handling: replaced regex-based .replace(/\r/g, ...) with .replaceAll("\r", ...) and added proper handling for meta+backspace, super+backspace, ctrl+backspace, meta+delete, and super+delete key combinations (search for ".replaceAll" in aQ8)

Fixed CRLF line-ending normalization: content is now normalized with .replace(/\r\n?/g, "\n") before splitting, preventing blank lines or split errors on Windows-originated text (search for "\\r\\n?")

Fixed variable reference in text processing: corrected f6.slice(1) to J6.slice(1), fixing incorrect text extraction (search for J6.slice(1) in kn4)

Added explicit error type checking for TC6 errors in the error handling cascade, preventing these errors from being swallowed by generic catch blocks (search for "instanceof TC6")

Fixed permission stripping logic to preserve existing rules and add deduplication when stripping dangerous permissions, preventing accidental rule loss (search for "strippedD" in ex)

Stale marketplace backup directories (.bak) are now cleaned up alongside the main directory during marketplace refresh (search for ".bak")

4 entries

In Developmentopen

#

Features with infrastructure added but not yet enabled. These are shipped "dark" and may become available in future versions.

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

Subagent Model Downgrade: Opus to Sonnet [In Development]#

What

When enabled, this feature automatically downgrades Opus model usage for sub-agents to Sonnet, potentially reducing costs for agentic workflows.

Status

Feature-flagged (disabled by default)

Details

Gated behind tengu_garnet_loom flag with default !1 (false)
When active and the current model includes "opus", it substitutes a Sonnet model
Likely intended to balance cost vs. capability for Task sub-agents

Evidence

Flag check R8("tengu_garnet_loom", !1) that downgrades opus to sonnet (search for "tengu_garnet_loom")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Bash Allowlist Strip-All Mode [In Development]#

What

A mode that strips all bash command allowlist entries from the permission context, effectively requiring re-approval for all bash commands.

Status

Feature-flagged (disabled by default)

Details

Gated behind tengu_bash_allowlist_strip_all flag with default !1 (false)
When enabled, the stripAllBashFlag property activates in the permission decision flow
May be intended as a security hardening measure for sensitive environments

Evidence

Flag R8("tengu_bash_allowlist_strip_all", !1) assigned to stripAllBashFlag (search for "tengu_bash_allowlist_strip_all")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Effort Level Clamping [In Development]#

What

Infrastructure to cap the maximum effort level based on a model's capability tier, preventing users from setting effort higher than what a model supports.

Status

Feature-flagged (disabled by default)

Details

Gated behind tengu_pyrite_wren flag with default !1 (false)
Compares the requested effort against the model's position in the effort ranking

Evidence

Function Uz4 gated by R8("tengu_pyrite_wren", !1) (search for "tengu_pyrite_wren")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

1 entry

Notesopen

#

The removal of the Buddy/Companion feature is a clean removal with no migration needed — the feature was experimental and self-contained. Any companion state stored in your configuration will simply be ignored.

The new /dream command is gated behind a feature flag (tengu_kairos_dream) and may not be available to all users immediately. The existing background auto-dream mechanism continues to work independently.

The claude-sonnet-4-6 model was already present in v2.1.96; this release adds no new model families but refines model capability detection (the max_effort resolver now properly handles version-based capability checks for Opus/Sonnet >= 4.6).

Claude Code v2.1.97

New Featuresopen

Related

Improvementsopen

Related

Related

Related

Related

Related

Related

Related

Bug Fixesopen

In Developmentopen

Related

Notesopen

Anthropic’s official release notes