Claude Code v2.1.80 / Changelog

Channels (MCP Inbound Push Notifications)#

Feature flag

tengu_harbor On for this account, and not off by default

The flag server returned on for the one account this site reads, and nothing in this release compiles it off by default. The compiled default is shown below, and says which it is when we cannot read one: a fifth of gates compile in a string or a number rather than on or off, and most published releases have no gate table behind them at all. No client can see what the server returns for your account.

This account: on · anonymous baseline: on · compiled default in v2.1.80: no gate table built for this version

These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.

tengu_harbor_ledger Not enough to say

Nothing here resolved what this flag was doing on this version, so nothing here should be read as on or off.

This account: no value returned · anonymous baseline: no value returned · compiled default in v2.1.80: no gate table built for this version

These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.

Read once, for one account on one subscription tier, against v2.1.80. It isn't a statement about your account. What a flag value here can and cannot tell you

What

A new system that allows MCP servers to push notifications directly into your Claude Code session, enabling real-time event-driven workflows.

Usage

claude --channels server1 server2

Details

MCP servers that declare the claude/channel capability can send notifications/claude/channel messages that appear in your session
Use --channels <servers...> to specify which servers may push notifications
Use --dangerously-load-development-channels <servers...> for local development of channel-enabled servers (shows a confirmation dialog at startup)
Requires claude.ai authentication (/login)
Org administrators can control availability via the channelsEnabled managed setting
Plugin-based channels must be on an approved allowlist (controlled by the tengu_harbor feature flag and tengu_harbor_ledger)
A warning is displayed: "Experimental · inbound messages will be pushed into this session, this carries prompt injection risks"
Channel messages are rendered with a ← prefix showing the source server name

Evidence

Channel notification system — notifications/claude/channel protocol (search for "claude/channel")

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

/schedule Command (Remote Agent Triggers)#

What

Schedule, update, list, or run remote Claude Code agents that execute on cron schedules in Anthropic's cloud infrastructure.

Usage

claude /schedule
claude /schedule "run tests every morning"

Details

Each trigger spawns a fully isolated remote session (CCR) with its own git checkout, tools, and optional MCP connections
Supports four operations: create, update, list, and run triggers via the /v1/code/triggers API
Can connect to GitHub repos (via the Claude GitHub App or token sync) and MCP connectors from claude.ai
Automatically creates environments if none exist
Includes git bundle uploading to seed remote sessions with your local code (including uncommitted changes)
Requires claude.ai authentication (API-only accounts are not supported)
Cron expressions are in UTC; the skill converts local times automatically
Cannot delete triggers from CLI — directs users to https://claude.ai/code/scheduled

Evidence

Schedule remote agents skill (search for "Schedule Remote Agents" and "/v1/code/triggers")

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

Bash Tool Output Compressor #

What

An intelligent output compression system that recognizes common CLI commands and summarizes their verbose output to save context window space.

Details

Automatically detects command types by parsing the shell command and applies type-specific compression:
git status: Strips hint lines, collapses clean repos to "clean"
git diff/show: Summarizes per-file with +N -N counts, truncates hunks
git log: Limits line length and total output
git branch: Groups local/remote, deduplicates
git commit/push/pull: Extracts only key status lines
Test runners (pytest, jest, vitest, cargo test, go test): Extracts pass/fail summary and failure details
Linters/type checkers (tsc, eslint, ruff, mypy, clippy): Keeps only error/warning lines
Package managers (npm/pip/brew install): Strips download progress noise
grep/rg: Restructures into N matches in M files with per-file groupings
ls -l: Strips metadata, shows dir/ and file size format with extension summary
cat/file reads: Truncates long files, keeps definition-like lines
JSON output (gh api, etc.): Prunes boilerplate URL fields (followers_url, repos_url, etc.)
Docker/kubectl logs: Deduplicates repeated log lines
Tables (docker ps, kubectl get, psql): Limits row count
Handles piped commands (e.g., cmd | head -5) and compound commands (&&, ;, ||)
Only compresses when savings exceed a minimum threshold

Evidence

Command classifier and compressor system (search for "git-status", "git-diff", "test", "error-only" as case labels in the switch statement)

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

Message Actions Navigation #

What

A new keyboard-driven system for navigating between messages in the transcript and performing actions like copying message content or tool arguments.

Details

Navigate messages: prev/next, prev-user/next-user, top/bottom
Actions available per message type:
c — copy message content (all message types)
p — copy tool argument (e.g., file path for Read/Edit, command for Bash, pattern for Grep)
e — edit a user message
Enter — expand/collapse grouped tool uses, attachments, and system messages
Messages in the active actions view get a subtle background highlight (messageActionsBackground)
Escape collapses the expanded view, Ctrl+C exits message actions entirely
Strips <system-reminder> tags when copying user message content

Evidence

Message actions keybinding system (search for "messageActions:prev" and "messageActionsBackground")

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

Inline Marketplace Definitions in Settings #

What

Define plugin marketplaces directly in settings.json using a new "settings" source type, without needing an external repository.

Details

Add marketplace definitions inline via the extraKnownMarketplaces config with source: "settings"
The reconciler writes a synthetic marketplace.json to the cache directory
Plugins must use remote sources (github, git-subdir, npm, url, pip) — relative paths are not supported
Reserved official marketplace names (anthropic, claude, etc.) cannot be used with settings sources
Marketplace name must match the extraKnownMarketplaces key

Evidence

Settings source marketplace schema (search for "source: \"settings\"" and "Inline marketplace manifest defined directly in settings.json")

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

Effort Level Display Enhancement #

The effort status bar message now shows the currently computed effort level when effort is set to "auto". Instead of just Effort level: auto, you now see Effort level: auto (currently high) (or medium/low), giving better visibility into what the model is actually using. Additionally, a new recommendation dialog suggests medium effort for Opus to balance speed, intelligence, and rate limits.

Evidence

Updated effort display (search for "Effort level: auto (currently" and "We recommend medium effort for Opus")

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

Improved Agent Memory Scope Labels #

The agent memory enablement prompt now uses clearer scope labels: "User scope (~/.claude/agent-memory/)" and "Project scope (.claude/agent-memory/)" instead of the previous generic "Enable" labels, making it easier to understand where memories will be stored.

Evidence

Updated scope labels (search for "User scope (~/.claude/agent-memory/) (Recommended)" and "Project scope (.claude/agent-memory/) (Recommended)")

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

Improved Memory Staleness Guidance #

The system prompt guidance for handling memories has been updated to emphasize verifying memories against current state before acting on them, rather than simply trusting what was true when the memory was written.

Evidence

Updated memory instruction (search for "Memory records can become stale over time")

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

Search Highlighting from End #

The terminal search highlighting system now supports searching from the end of the buffer, improving the search experience when looking for recent content.

Evidence

New searchHighlightFromEnd property (search for "searchHighlightFromEnd")

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

Rust File Index Skip Optimization #

The file indexer now detects when tracked paths haven't changed and skips unnecessary Rust index rebuilds, improving startup and refresh performance for projects using the Rust-based file indexer.

Evidence

Index rebuild skip messages (search for "[FileIndex] skipped Rust index rebuild")

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

Git Index-Based File Cache Invalidation #

The file index cache now checks the .git/index modification time to intelligently invalidate and refresh the file listing only when the git index actually changes, rather than on a fixed timer.

Evidence

Git index mtime check in file cache refresh (search for ".git", "index" in the RnY function)

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

History Search Navigation with Up Arrow #

A new historySearch:navUp keybinding (bound to the Up arrow key) allows navigating upward through history search results, complementing the existing search controls.

Evidence

New keybinding (search for "historySearch:navUp")

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

Attachments Navigation to Messages #

A new attachments:toMessages keybinding (bound to the Up arrow key) allows navigating from the attachments area directly into the message transcript, improving keyboard-driven navigation flow.

Evidence

New keybinding (search for "attachments:toMessages")

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

Open in Editor with Line Number Support #

The open-in-editor feature now supports jumping to specific line numbers across different editors. GUI editors (like VS Code, Sublime) use their native line-jump flags, while terminal editors (like vim, nano) use +N syntax. The editor spawning handles both detached GUI processes and inline terminal editors with alternate screen management.

Evidence

Editor spawning with line support (search for "editor spawn failed")

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

Chunked Transcript Export #

Transcript export now renders in chunks using a renderRange system, enabling streaming/progressive rendering of large transcripts instead of rendering everything at once.

Evidence

Chunked rendering via renderRange (search for "renderRange")

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

Improved Tab Focus Management #

The focus management system has been refactored. Tab/Shift+Tab now properly cycles focus between interactive elements, and the focus manager is attached to the root node rather than being a standalone entity. The keyboard dispatch system now handles Tab key for focus cycling when not consumed by other handlers.

Evidence

Focus management changes (search for "focusManager" and "focusNext")

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

GitHub App Installation & Token Sync Checks #

New infrastructure checks whether the Claude GitHub App is installed on a repository and whether the user's GitHub token is synced via web-setup. These checks support the /schedule command's ability to determine if remote agents can access specific repos.

Evidence

GitHub checks (search for "checkGithubAppInstalled" and "checkGithubTokenSynced")

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

Git Bundle Upload for Remote Sessions #

A new git bundle creation and upload system captures the current repository state (including uncommitted work via git stash create) and uploads it as a seed bundle for remote CCR sessions. Supports automatic fallback from --all to HEAD-only bundles when the full bundle exceeds size limits.

Evidence

Bundle upload system (search for "git bundle create" and "_source_seed.bundle")

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

Fine-Grained Tool Streaming Guard #

Feature flag

tengu_fgts On for this account, and not off by default

The flag server returned on for the one account this site reads, and nothing in this release compiles it off by default. The compiled default is shown below, and says which it is when we cannot read one: a fifth of gates compile in a string or a number rather than on or off, and most published releases have no gate table behind them at all. No client can see what the server returns for your account.

This account: on · anonymous baseline: on · compiled default in v2.1.80: no gate table built for this version

These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.

Read once, for one account on one subscription tier, against v2.1.80. It isn't a statement about your account. What a flag value here can and cannot tell you

The eager_input_streaming feature for fine-grained tool streaming is now gated to only activate for first-party connections that support extended notifications, preventing incompatible configurations.

Evidence

Guard conditions added (search for "tengu_fgts" in the structural diff)

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

Vercel Plugin Tip #

A new tip suggests installing the Vercel plugin when working with Vercel projects: "Working with Vercel? Install the vercel plugin."

Evidence

Vercel tip (search for "Working with Vercel? Install the vercel plugin")

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

Claude Code v2.1.80

Changesopen

Channels (MCP Inbound Push Notifications)#

/schedule Command (Remote Agent Triggers)#

Bash Tool Output Compressor #

Message Actions Navigation #

Inline Marketplace Definitions in Settings #

Effort Level Display Enhancement #

Related

Improved Agent Memory Scope Labels #

Improved Memory Staleness Guidance #

Search Highlighting from End #

Rust File Index Skip Optimization #

Git Index-Based File Cache Invalidation #

History Search Navigation with Up Arrow #

Related

Attachments Navigation to Messages #

Related

Open in Editor with Line Number Support #

Chunked Transcript Export #

Improved Tab Focus Management #

GitHub App Installation & Token Sync Checks #

Git Bundle Upload for Remote Sessions #

Fine-Grained Tool Streaming Guard #

Vercel Plugin Tip #

Related

Bug Fixesopen

#

Anthropic’s official release notes