◉CLAUDE LABJP
●CODE 2.1.319 — Claude Code now moves MCP tasks to the background automatically, and a denyInsteadOfPrompting setting denies calls that would wait on a prompt●FABLE 5.2 — Claude Fable 5.2 and its fast mode are on the Claude API (11/9). Mythos 5.2 is limited to verified organizations●SONNET 4.5 — Retires on the Claude API on 11/30, 20 days left. Migrate to Sonnet 5.5●WINDOWS — Reports say hooks break silently only on Japanese-locale Windows; check the character encoding first●FAST — Opus 4.8 fast mode is deprecated and will be removed on 11/30. Migrate to Opus 5.5●NEW — I Put a Ten-Line Promise File at the To…●CODE 2.1.319 — Claude Code now moves MCP tasks to the background automatically, and a denyInsteadOfPrompting setting denies calls that would wait on a prompt●FABLE 5.2 — Claude Fable 5.2 and its fast mode are on the Claude API (11/9). Mythos 5.2 is limited to verified organizations●SONNET 4.5 — Retires on the Claude API on 11/30, 20 days left. Migrate to Sonnet 5.5●WINDOWS — Reports say hooks break silently only on Japanese-locale Windows; check the character encoding first●FAST — Opus 4.8 fast mode is deprecated and will be removed on 11/30. Migrate to Opus 5.5●NEW — I Put a Ten-Line Promise File at the To…
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Claude Code/2026-11-10Intermediate

How Far Behind Is Your Claude Code on the stable Channel? I Counted Published Versions Instead of Subtracting Numbers

Subtracting version numbers overstates the gap between stable and latest. Here is a short Python script that counts published versions from the npm registry, plus the channel settings worth knowing.

Claude.ai/2026-11-09Beginner

Before I Open the Claude in Chrome Side Panel, I Sort My Tabs Into Show, Close, or Move to Another Window

Claude in Chrome reads your active tab as a screenshot. Based on the official help pages, here are three checks before opening the panel and a way to keep sensitive sites in a separate profile.

API / SDK/2026-11-09Beginner

Does an Undated claude-sonnet-4-5 Escape the November 30 Retirement?

The retirement table lists only the dated Sonnet 4.5 ID. Here is how I read the docs to decide whether the undated alias stops too, and the one grep that catches both.

Claude Code/2026-11-08Intermediate

Before a Nightly Job Hangs on a Prompt: Designing Around denyInsteadOfPrompting

Claude Code 2.1.319 adds permissions.denyInsteadOfPrompting. Here is how it compares with other ways to answer permission prompts unattended, and how to catch what a denial quietly drops.

API / SDK/2026-11-07Intermediate

Your Key Is Valid but You Get a 400 or 401 — Check the Workspace Header and Browser Calls Before Reissuing

When a Claude API key is valid but requests still fail with 400 or 401, two causes are worth ruling out before you create a new key: a missing workspace ID header and a direct call from the browser. A triage table and a small script you can run are included.

Claude Code/2026-11-06Beginner

When claude doctor Listed Four Warnings, I Sorted Them by Cause Before Fixing Anything

claude doctor ended with "4 warnings found", but I didn't need four fixes. Using the real output, here is how to spot duplicated warnings and sign-in-only info lines, group the rest by cause, and decide the order of repair.

Claude Code/2026-11-06Beginner

Claude Code Shipped 21 Releases in Four Weeks. I Counted Before Deciding How Often to Update

Should you check Claude Code updates every day or once a week? I counted npm's publish history with a standard-library Python script and used the last 28 days of counts and gaps to set a rhythm.

API / SDK/2026-11-05Intermediate

Three Changes I Made Before Moving to Message Threads, So My Own Copy of the Conversation Stays Mine

What changes when a loop that resends the full history every turn moves to message threads, which entered beta on November 2. How create and continue differ, how to triage a 404 or 400, and where I would not migrate, all based on the official docs.

Claude Code/2026-11-04Beginner

One Word, One Turn at xhigh — Where I Draw the Line on Typing ultrathink

Since Claude Code v2.1.311, ultrathink runs only the turn you type it in at xhigh effort. Here is how it differs from a standing setting, and how I decide when to use it.

Claude Code/2026-11-03Intermediate

When Claude Code dies with a Bus error on a shared home directory, check this before you turn off auto-update

Why Claude Code crashes with a Bus error on an NFS-style shared home, how the official cleanup rule and update switches work, and two small scripts to check your setup.

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