◉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…
ARTICLES

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All (909)◉ Claude AI (148)⟐ Claude Code (382)◈ Cowork (72)⬡ API & SDK (307)
⟐ Claude Code/2026-05-05Beginner

Claude Code Desktop Got a Major Overhaul: New UI for the Parallel Agents Era

Anthropic redesigned the Claude Code desktop app in April 2026 for the parallel agent era. Explore the new multi-session sidebar, drag-and-drop layout, integrated terminal, Side Chat, and Routines.

⟐ Claude Code/2026-05-05Advanced

Claude Code MCP Connection Troubleshooting: A Complete Diagnostic Guide

A systematic approach to diagnosing MCP server failures in Claude Code—from config file validation to transport-layer debugging, crash recovery, and multi-server production patterns.

⬡ API & SDK/2026-05-05Intermediate

Stop Writing Weekly Reports Manually — Automate Them with Claude API, GitHub, Linear, and Slack

Automate your team's weekly Slack progress reports using Claude API. This guide walks through a Node.js system that pulls GitHub and Linear data, formats it with Claude API, and posts it to Slack automatically.

⬡ API & SDK/2026-05-05Advanced

The Real Cost of Claude API Extended Thinking in Production — ROI Data by Task Type

Three months of measured cost, quality, and speed data for Extended Thinking across five task categories. Learn exactly when extended thinking is worth it—and when it's not.

⟐ Claude Code/2026-05-05Intermediate

5 Common Claude Code Errors and How to Fix Them

A practical guide to the five most common Claude Code errors—Permission denied, rate limits, MCP connection failures, context overflow, and bash failures—with real causes and fixes for each.

⟐ Claude Code/2026-05-05Intermediate

Claude Code + Ollama: Cutting API Costs with Local LLMs

Worried about Claude Code API costs? Learn how to combine Ollama (local LLM) with a litellm proxy to significantly reduce expenses, and discover a practical framework for deciding which tasks to run locally versus in the cloud.

⟐ Claude Code/2026-05-05Beginner

MCP Server Suddenly Stopped Working in Claude Code: A 5-Step Diagnosis Guide

Five steps for diagnosing a broken MCP server: check /mcp status, read stderr logs, validate JSON config, verify auth tokens, and restart Claude Code cleanly.

⬡ API & SDK/2026-05-05Advanced

Building a 'Think-and-Search' AI Agent — Claude API Extended Thinking × Tool Use

A deep dive into combining Claude API Extended Thinking and Tool Use. Covers frequent errors, a complete research agent implementation in Python, plus cost estimation, timeout design, and error recovery for production use.

◉ Claude AI/2026-05-05Intermediate

How Asking Claude 'What Should I Build?' Actually Improved My App Completion Rate

After more than a decade of solo app development, I started using Claude not just for coding help but at the ideation stage — before writing a single line of code. Here's what changed, and the exact prompts I use.

◉ Claude AI/2026-05-04Advanced

Claude Mythos in Production: A Deployment Playbook From Internals to Operations

Most Claude Mythos coverage stops at conceptual overviews. This playbook covers actual production deployment — System Card highlights that change implementation, gateway architecture, sandboxing, prompt-injection defense, monitoring, and scaling — with patterns from running Mythos-aware services.

◉ Claude AI/2026-05-04Advanced

Anthropic IPO 2026: A Playbook for Developers and Investors Reading the Same News Differently

Anthropic IPO coverage in 2026 is everywhere, but almost all of it is investor-facing. This playbook integrates the investor lens with the developer lens — what changes for API pricing, roadmap cadence, competitive dynamics, and how to prepare your own project.

⟐ Claude Code/2026-05-04Intermediate

Build a Pipeline Where Docs Update Automatically Every Time Your Code Changes

Build a CI/CD pipeline that auto-generates README, CHANGELOG, and API docs whenever code changes. Use Claude Haiku 4.5 for cost-efficient classification and Sonnet 4.6 for quality output — cutting API costs by up to 70% while keeping documentation accurate.