Claude Code v2.1.132 / Changelog

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10 entries

Changesopen

Custom Linux Sandbox Binary Paths #

What

Linux users can now configure exact bwrap and socat binary paths for sandbox and proxy bridge setup.

Usage

{
  "sandbox": {
    "bwrapPath": "/usr/bin/bwrap",
    "socatPath": "/usr/bin/socat"
  }
}

Details

bwrapPath controls the bubblewrap executable used for Linux sandboxing.
socatPath controls the executable used for HTTP/SOCKS bridge processes.
Claude Code validates that configured paths are executable and reports clearer errors if not.
This is useful on systems where these tools are installed outside PATH, or where a managed environment pins exact binary locations.

Evidence

Sandbox schema adds bwrapPath and socatPath settings (search for "Linux only: absolute path to the bwrap" and "Linux only: absolute path to the socat binary")

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.

v2.1.133 Admin-Controlled Sandbox Binary Paths

MCP Wait For Servers [Gradual Rollout]#

Feature flag

tengu_ashen_kelp 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 v2.1.132: 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 v2.1.132. It isn't a statement about your account. What a flag value here can and cannot tell you

What

Claude can wait briefly for MCP servers that are still connecting, then continue once their tools are available.

Usage

Claude calls WaitForMcpServers when an MCP server is still connecting.

Details

The new WaitForMcpServers tool waits for all pending servers, or for specific server names.
Results distinguish connected, failed, still pending, needs-auth, disabled, and unknown servers.
Missing-tool guidance now tells Claude when a requested MCP tool belongs to a server that is still connecting.
The tool is gated by tengu_ashen_kelp, so it may not be visible for every user yet.

Evidence

MCP wait tool and gated enablement (search for "WaitForMcpServers" and "The MCP server '")

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

WebFetch HTTP Error Results #

WebFetch now returns structured HTTP failure information when a server responds with an error status, including status text and Retry-After when present. This should help users distinguish an authentication-required page, a rate limit, and a normal fetch failure without guessing from a generic exception.

Evidence

WebFetch HTTP error result text (search for "The server returned HTTP" and "The response body was not retrieved")

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

Fullscreen Renderer Controls #

Terminal fullscreen behavior is more conservative and easier to override. Claude Code now recognizes CLAUDE_CODE_DISABLE_ALTERNATE_SCREEN as an explicit opt-out, and it auto-disables fullscreen on Windows-over-SSH ConPTY sessions unless CLAUDE_CODE_NO_FLICKER=1 is set.

Evidence

Fullscreen environment handling (search for "CLAUDE_CODE_DISABLE_ALTERNATE_SCREEN" and "fullscreen disabled: Windows over SSH")

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

Background Session Detach Key #

Background session instructions now consistently use Ctrl+Z to detach, replacing older Ctrl+B then d and Ctrl+Q guidance in redraw/startup messages.

Evidence

Background session prompts (search for "Ctrl+Z to detach")

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

MCP Connection Resilience #

Remote MCP retry behavior now logs recovery and stops retrying once failed remote servers recover. MCP stdio transports also detect excessive non-protocol stdout and disconnect before unbounded memory growth.

Evidence

MCP retry and stdout overflow handling (search for "[MCP] Retry: all remote servers recovered, stopping" and "StdoutOverflowError")

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.

v2.1.218 MCP: Overflow Protection for Misbehaving Servers

Bash Safety Detection #

Read-only command validation gained additional shell-edge-case detection, especially around zsh recursive evaluation, array subscripts, assignment side effects, redirect expansion, and escaped brace handling. These checks reduce cases where a command that looks harmless can still execute dynamic shell code.

Evidence

Shell safety reasons (search for "zsh $name[expr]", "assignment alters command lookup/execution", and "Redirect target starts with =")

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

Long-Running Command Guidance #

The Bash tool description now explains run_in_background more directly and removes stale advice to read output later immediately. Claude Code also includes stronger guidance to avoid foreground sleep and use background commands or Monitor for waiting.

Evidence

Background command guidance (search for "run_in_background runs the command detached" and "Foreground sleep is blocked")

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

Policy Limit Cache Handling #

When policy limits are fetched and no restrictions apply, Claude Code now preserves an explicit cached empty result instead of treating it like a deleted cache file. This should reduce noisy policy-limit cache churn in environments with no active restrictions.

Evidence

Policy limit cache message (search for "Policy limits: No restrictions (cached empty)")

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

Service Availability Messages #

Daemon/service messages now distinguish unsupported installation from on-demand operation, making platform limitations clearer.

Evidence

Service messaging (search for "service install not available on this platform" and "service uninstall not available on linux")

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

1 entry

Bug Fixesopen

#

WebFetch now reports HTTP status responses as tool results instead of falling through to less-informative request failures (search for "The server returned HTTP")

MCP stdio servers that write too much non-JSON data to stdout are disconnected with a clear overflow error instead of allowing unbounded buffering (search for "wrote >" and "without a JSON-RPC message boundary")

Fullscreen mode is now disabled automatically for Windows-over-SSH ConPTY sessions where the alternate-screen renderer is known to misbehave (search for "fullscreen disabled: Windows over SSH")

Policy-limit fetches with no restrictions now cache the empty state instead of deleting the cache on the old 404 path (search for "Policy limits: No restrictions (cached empty)")

2 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.

Goal Command [In Development]#

What

A new /goal command is being prepared to set a session-scoped stopping condition so Claude keeps working until a stated goal is met.

Status

Disabled/stubbed

Details

The implementation adds /goal <condition>, /goal clear, status rendering, and a session-scoped Stop hook.
Goal state records the condition, iteration count, and set time.
The command currently has isEnabled: () => !1, so users cannot invoke it in this build.
The existing /loops UI can see and manipulate related Stop-hook entries, but /goal itself remains unavailable.

Evidence

Disabled goal command implementation (search for "Set a goal — keep working until the condition is met" and "No goal set. Usage: /goal <condition>")

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

Claude Code v2.1.132

Changesopen

Custom Linux Sandbox Binary Paths #

Related

MCP Wait For Servers [Gradual Rollout]#

WebFetch HTTP Error Results #

Fullscreen Renderer Controls #

Background Session Detach Key #

MCP Connection Resilience #

Related

Bash Safety Detection #

Long-Running Command Guidance #

Policy Limit Cache Handling #

Service Availability Messages #

Bug Fixesopen

#

In Developmentopen

#

Related

Goal Command [In Development]#

Anthropic’s official release notes