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●FORK — Claude Code 2.1.212 changes what /fork does: it copies your conversation into a new background session with its own row in claude agents, so you can keep working. The old in-session subagent is now /subtask●LIMITS — WebSearch calls are now capped at 200 per session by default, and subagent spawns get the same 200 ceiling, so a runaway search or delegation loop stops on its own●MCPBG — MCP tool calls running past two minutes now move to the background automatically, keeping the session usable. Tune the threshold with CLAUDE_CODE_MCP_AUTO_BACKGROUND_MS●PLANFIX — Fixed plan mode auto-running file-modifying Bash commands such as touch and rm without a permission prompt or an SDK canUseTool callback●SONNET5 — Claude Sonnet 5 is running on introductory pricing of $2 per million input tokens and $10 per million output. After August 31 it moves to $3 and $15●IPO — Bankers are reportedly lining up investor meetings for Anthropic ahead of a possible public listing as soon as October●FORK — Claude Code 2.1.212 changes what /fork does: it copies your conversation into a new background session with its own row in claude agents, so you can keep working. The old in-session subagent is now /subtask●LIMITS — WebSearch calls are now capped at 200 per session by default, and subagent spawns get the same 200 ceiling, so a runaway search or delegation loop stops on its own●MCPBG — MCP tool calls running past two minutes now move to the background automatically, keeping the session usable. Tune the threshold with CLAUDE_CODE_MCP_AUTO_BACKGROUND_MS●PLANFIX — Fixed plan mode auto-running file-modifying Bash commands such as touch and rm without a permission prompt or an SDK canUseTool callback●SONNET5 — Claude Sonnet 5 is running on introductory pricing of $2 per million input tokens and $10 per million output. After August 31 it moves to $3 and $15●IPO — Bankers are reportedly lining up investor meetings for Anthropic ahead of a possible public listing as soon as October
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⬡ API & SDK/2026-05-01Advanced

Stop Claude API Prompt Regressions with Golden-Dataset Testing

A complete production guide to catching the silent quality drift that hits Claude API prompts when models or prompts change — using golden datasets and LLM-as-a-Judge wired into CI.

⟐ Claude Code/2026-04-29Intermediate

Stopping Claude Code from Quitting Mid-Task — Prompt Patterns and Verification Loops

Claude Code says "Done!" — but the build is broken and only half the files were touched. Here are the prompt patterns and automated verification loops I now use in production to keep agents running until the job is actually finished.

◉ Claude AI/2026-04-29Advanced

Make Claude Your Production Debugging Companion: A Practical Design for Log Triage, Hypothesis Generation, and Repro Scripts

A field-tested blueprint for solo developers who carry their own pager. We split production debugging into three jobs Claude can actually own — log summarization, hypothesis generation, and minimal repro — with full prompts, sanitization code, and traps that cost me real downtime.

⬡ API & SDK/2026-04-28Advanced

Managing Claude API Prompts as Code: Registry, Versioning, and A/B Testing in Production

Anyone running Claude API in production eventually hits the same wall: which prompt was served, when, to whom, and at what version? This guide walks through a registry-based architecture with A/B testing, gradual rollouts, and automatic rollback — all implementable yourself in TypeScript.

⬡ API & SDK/2026-03-27Advanced

Building LLM Evaluation Pipelines with Claude API — Claude-as-Judge, Prompt A/B Testing, and Quality Scoring Patterns

Designing and implementing LLM evaluation pipelines on the Claude API — Claude-as-Judge, prompt A/B testing, quality scoring, and regression testing for production applications.

◉ Claude AI/2026-03-26Beginner

How to Summarize Text Effectively with Claude AI — A from Prompt Design to API Integration

Master text summarization with Claude AI. Learn prompt design patterns for executive summaries, meeting notes, research papers, and PDFs, plus Python and TypeScript API implementations for automated workflows.

◉ Claude AI/2026-03-26Intermediate

Claude System Prompt Design Patterns — 7 Pro-Level Templates

Master 7 proven system prompt design patterns for Claude that dramatically improve output quality. Includes ready-to-use templates and code examples.

◉ Claude AI/2026-03-20Advanced

Claude Development Best Practices Collection — Essential Techniques from 29 Premium Articles

A curated collection of best practices from all Claude Lab premium articles. Covers API design, Claude Code workflows, Cowork automation, monetization strategies, and prompt engineering.