v2.1.199 Claude Code Release Notes

Jul 2, 2026

Claude's Analysisby Sonnet 5

Background-agent reliability pass: Linux daemon self-kill, macOS SSH regression, claude stop races, and subagent silent failures all fixed; transient 429s now auto-retried.

Changes

Total Changes (vs Average)

1.4×

Version Type

Patch

Release Focus

Bug Fixes

Day Since Prior Release

Release # This Month

#2 of 22

Bug Fix Ratio

83%

Post-Release Edits

—

Change Category

Ecosystem Impact

Plugins/Skills and MCP each appeared in 6 of the last 10 releases, yet this release has just 1 Plugins/Skills fix and no MCP at all. Two consecutive General-heavy drops signal a deliberate infrastructure consolidation sprint between feature expansions.

Key Themes

12Background Agent Overhaul|2Subagent Error Transparency|4Network Resilience & Retry|6Skills, Hooks & Config Polish

May Help If You've Noticed

Background agents on Linux crash every minute, taking all running agents with them

Fixed20 changes

•Fixed SSL certificate errors (TLS-inspecting proxies, missing NODE_EXTRA_CA_CERTS, expired certs) burning retries before showing actionable guidance — they now fail immediately with the fix hint
•Fixed streaming responses being discarded when the API emits a mid-stream overloaded/server error after partial output — the partial is now kept with an incomplete-response notice
•Fixed subagents cut off by a rate limit or server error silently failing instead of returning their partial work to the parent
•Fixed subagents reporting API errors (e.g. usage limit reached) as successful results — the error is now reported to the parent agent
•Fixed the background-agent daemon on Linux killing itself and every running agent every ~50 seconds after an unclean shutdown left a corrupted worker record
•Fixed background agents failing to cold-start over SSH on macOS with "Could not switch to audit session" (regression in 2.1.196)
•Fixed claude stop being silently undone when it raced a background-agent respawn — the respawn now honors the stop
•Fixed background job progress indicators stalling for minutes while the job ran long commands
•Fixed background sessions on memory-starved machines showing a generic error — they now indicate low memory and suggest freeing resources
•Fixed remote sessions briefly flapping between Working and Idle in the agent view when a background agent completes
•Fixed idle subagents vanishing from the agent panel while other subagents were still working; surplus idle agents now collapse into an expandable summary row
•Fixed typing /model or /fast while viewing a subagent silently opening the lead's model picker — a notice now explains the command applies to the lead
•Fixed SessionStart, Setup, and SubagentStart hooks silently hiding stderr when exiting with code 2 — the error is now shown in the transcript
•Fixed claude --dangerously-skip-permissions daemon <subcommand> being treated as a chat prompt instead of running the subcommand
•Fixed SendMessage silently misrouting when a re-spawned agent reuses a previous agent's name — the tool now detects the mismatch and asks the caller to retarget
•Fixed opening or resuming a session with no new messages needlessly growing the transcript file
•Fixed backgrounding a session with ← or /background dropping its /color from the agent view row
•Fixed resetting a corrupted config file from the startup recovery dialog destroying it unrecoverably — it now backs up the file first
•Fixed Claude in Chrome repeatedly opening the reconnect page when sessions run from different builds or config directories
•Fixed plan mode not prompting for state-changing browser tool calls; read-only browser_batch calls are now correctly auto-allowed

Other4 changes

•Stacked slash-skill invocations like /skill-a /skill-b do XYZ now load all leading skills (up to 5), not just the first
•Transient server rate-limit errors (429s unrelated to your usage limit) are now retried automatically with backoff for subscribers instead of failing the turn
•CLAUDE_CODE_RETRY_WATCHDOG now raises the default retry count for non-capacity transient errors to 300 and lifts the cap of 15 on CLAUDE_CODE_MAX_RETRIES
•claude agents session rows now show pull-request links as bare #N without the redundant "PR" label

Fixed20 changes

•Fixed SSL certificate errors (TLS-inspecting proxies, missing NODE_EXTRA_CA_CERTS, expired certs) burning retries before showing actionable guidance — they now fail immediately with the fix hint

•Fixed streaming responses being discarded when the API emits a mid-stream overloaded/server error after partial output — the partial is now kept with an incomplete-response notice

•Fixed subagents cut off by a rate limit or server error silently failing instead of returning their partial work to the parent

•Fixed subagents reporting API errors (e.g. usage limit reached) as successful results — the error is now reported to the parent agent

•Fixed the background-agent daemon on Linux killing itself and every running agent every ~50 seconds after an unclean shutdown left a corrupted worker record

•Fixed background agents failing to cold-start over SSH on macOS with "Could not switch to audit session" (regression in 2.1.196)

•Fixed claude stop being silently undone when it raced a background-agent respawn — the respawn now honors the stop

•Fixed background job progress indicators stalling for minutes while the job ran long commands

•Fixed background sessions on memory-starved machines showing a generic error — they now indicate low memory and suggest freeing resources

•Fixed remote sessions briefly flapping between Working and Idle in the agent view when a background agent completes

•Fixed idle subagents vanishing from the agent panel while other subagents were still working; surplus idle agents now collapse into an expandable summary row

•Fixed typing /model or /fast while viewing a subagent silently opening the lead's model picker — a notice now explains the command applies to the lead

•Fixed SessionStart, Setup, and SubagentStart hooks silently hiding stderr when exiting with code 2 — the error is now shown in the transcript

•Fixed claude --dangerously-skip-permissions daemon <subcommand> being treated as a chat prompt instead of running the subcommand

•Fixed SendMessage silently misrouting when a re-spawned agent reuses a previous agent's name — the tool now detects the mismatch and asks the caller to retarget

•Fixed opening or resuming a session with no new messages needlessly growing the transcript file

•Fixed backgrounding a session with ← or /background dropping its /color from the agent view row

•Fixed resetting a corrupted config file from the startup recovery dialog destroying it unrecoverably — it now backs up the file first

•Fixed Claude in Chrome repeatedly opening the reconnect page when sessions run from different builds or config directories

•Fixed plan mode not prompting for state-changing browser tool calls; read-only browser_batch calls are now correctly auto-allowed

Other4 changes

•Stacked slash-skill invocations like /skill-a /skill-b do XYZ now load all leading skills (up to 5), not just the first

•Transient server rate-limit errors (429s unrelated to your usage limit) are now retried automatically with backoff for subscribers instead of failing the turn

•CLAUDE_CODE_RETRY_WATCHDOG now raises the default retry count for non-capacity transient errors to 300 and lifts the cap of 15 on CLAUDE_CODE_MAX_RETRIES

•claude agents session rows now show pull-request links as bare #N without the redundant "PR" label

v2.1.199 Claude Code Release Notes

Changes in Claude Code v2.1.199

Fixed20 changes

Other4 changes

v2.1.199 Claude Code Release Notes

Changes in Claude Code v2.1.199

Fixed20 changes

Other4 changes