◉CLAUDE LABJP
●2.1.302 — Fork subagents are now on by default in claude -p, the Agent SDK and the desktop app. Turn them off with CLAUDE_CODE_FORK_SUBAGENT=0 (10/16)●2.1.299 — Conversations over 200K tokens left idle about 54 minutes get compacted; MCP allow rules now match only the server they name●SONNET 4.5 — Retires on the Claude API on 11/30, 43 days left. Migrate to Sonnet 5.5●WINDOWS — Reports say hooks break silently only on Japanese-locale Windows; check the character encoding first●FAST MODE — Opus 5.5 fast mode is out of research preview and no longer needs the beta header (10/15)●NEW — I Put a Ten-Line Promise File at the To…●2.1.302 — Fork subagents are now on by default in claude -p, the Agent SDK and the desktop app. Turn them off with CLAUDE_CODE_FORK_SUBAGENT=0 (10/16)●2.1.299 — Conversations over 200K tokens left idle about 54 minutes get compacted; MCP allow rules now match only the server they name●SONNET 4.5 — Retires on the Claude API on 11/30, 43 days left. Migrate to Sonnet 5.5●WINDOWS — Reports say hooks break silently only on Japanese-locale Windows; check the character encoding first●FAST MODE — Opus 5.5 fast mode is out of research preview and no longer needs the beta header (10/15)●NEW — I Put a Ten-Line Promise File at the To…
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All (907)◉ Claude AI (147)⟐ Claude Code (381)◈ Cowork (72)⬡ API & SDK (307)
⟐ Claude Code/2026-04-24Advanced

The Claude Code Error Handbook — Auth, Billing, Stalls, Tools & MCP, Diagnosed by Symptom

A field-tested reference for 40+ Claude Code error patterns, organized by visible symptom: authentication, billing, response stalls, tool failures, MCP connectivity, and hook issues. Each entry tells you where to look and what to change.

⟐ Claude Code/2026-04-24Advanced

Claude Code Environment Variables — The Complete Practical Reference

A practitioner-focused reference for every Claude Code environment variable that actually matters. Covers API connectivity, model selection, PowerShell tool quirks, logging, timeouts, security flags, and real-world templates for solo, team, and CI/CD setups.

⟐ Claude Code/2026-04-24Advanced

Debugging Claude Code Hooks in Production — Where to Start When Logs Are Missing

Your Claude Code hooks work locally but go silent in production. Here is the three-layer observability pattern I use on real projects, plus a 60-second minimal reproduction recipe for isolating failures.

⟐ Claude Code/2026-04-24Advanced

Fixed-Bid Pricing Engineering for Freelancers in the Claude Code Era

How to price fixed-bid engagements in the Claude Code era without bleeding profit — a three-layer cost model, risk buffers, and contract clauses that protect freelancers when generative AI compresses hours.

⟐ Claude Code/2026-04-24Beginner

Claude Keeps Saying 'Response Incomplete' — A Layered Troubleshooting Guide

Diagnose why Claude or Claude Code freezes with a 'Response incomplete' or 'Try stopping' message. Walk through the four layers where generation can stall and recover the session without losing context.

⟐ Claude Code/2026-04-24Intermediate

Three Minutes with /doctor: Catching Claude Code Config Drift Before It Costs You an Hour

When Claude Code acts up, the first thing to run is /doctor. It shows merged settings, MCP server status, and permission mode at a glance.

⟐ Claude Code/2026-04-24Advanced

Write the Repro Test Before Delegating Bug Fixes to Claude Code

After watching Claude Code spin its wheels on ambiguous bug reports, I started writing the failing test myself before delegating. This post walks through the design principles, a concrete repro test, and the three-stage workflow I run in production.

⬡ API & SDK/2026-04-24Advanced

Shadow Mode with Claude Agent SDK — Measuring Agent Accuracy on Live Traffic Without Touching Users

You want to ship an AI agent to production, but you can't measure its real accuracy without exposing real users. Shadow mode solves that paradox. This guide shows how to run a Claude Agent SDK agent alongside your existing workflow, log the deltas, and promote it step by step.

◉ Claude AI/2026-04-24Intermediate

Claude for Teachers: A Practical Workflow for Lesson Prep, Grading, and Personalized Feedback

A practical guide to using Claude in real classroom work, built around three pillars: lesson prep, grading, and personalized feedback — with concrete prompts and the privacy rules you need before you start.

⬡ API & SDK/2026-04-23Advanced

High-Availability Patterns for the Claude API — Making Sonnet/Haiku/Opus Fallback Work in Production

A single-model Claude API integration will fall over the first time rate limits or a regional hiccup land at peak hours. This is the production pattern for a Sonnet → Opus → Haiku fallback chain, with circuit breakers, streaming coverage, and the pitfalls you only learn the hard way.

◉ Claude AI/2026-04-23Beginner

When Claude Says 'Failed to Send Message' — A Practical Triage and Recovery Guide

Why Claude shows 'Failed to send message' — broken down into five real causes, with a quick triage order and practical fixes for each.

⟐ Claude Code/2026-04-23Advanced

Finishing Long-Running Claude Code Tasks: A Resilience Playbook You Can Ship

Multi-hour Claude Code jobs — bulk refactors, TypeScript migrations, mass test generation — always stop before they finish, and recovery is painful when you cannot tell what already ran. This guide ships concrete patterns: a checkpoint-driven manifest, a three-state circuit breaker, idempotent retry rules, and a freeze-and-resume protocol you can copy into your repo today.