CLAUDE LABJP
RATELIMIT — Claude API rate limits were raised. Sonnet and Haiku limits now match Opus at every usage tier, leaving more headroom for parallel workloadsTIERS — Usage tiers were consolidated into three: Start, Build, and Scale — a clearer picture of where your usage sitsRETIRE — The Developer Platform retired Claude Sonnet 4 and Opus 4 (…-20250514). Code referencing those old model IDs needs migratingFABLE5 — Claude Fable 5 is now included in Max and Team Premium plans, available at 50% of the limitFASTEND — Fast mode for Claude Opus 4.7 is removed on July 24 — two days left. Move any speed: 'fast' calls to fast mode on Opus 4.8CCODE — Claude Code keeps shipping stability updates: background sessions for /fork, smarter /resume and /background, and stronger safeguards for WebSearch, subagents, and BashRATELIMIT — Claude API rate limits were raised. Sonnet and Haiku limits now match Opus at every usage tier, leaving more headroom for parallel workloadsTIERS — Usage tiers were consolidated into three: Start, Build, and Scale — a clearer picture of where your usage sitsRETIRE — The Developer Platform retired Claude Sonnet 4 and Opus 4 (…-20250514). Code referencing those old model IDs needs migratingFABLE5 — Claude Fable 5 is now included in Max and Team Premium plans, available at 50% of the limitFASTEND — Fast mode for Claude Opus 4.7 is removed on July 24 — two days left. Move any speed: 'fast' calls to fast mode on Opus 4.8CCODE — Claude Code keeps shipping stability updates: background sessions for /fork, smarter /resume and /background, and stronger safeguards for WebSearch, subagents, and Bash
ARTICLES

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All (786) Claude AI (133) Claude Code (320) Cowork (54) API & SDK (279)
API & SDK/2026-05-05Intermediate

Let Claude Diagnose Its Own Tool Errors — Building a Self-Correction Loop with the Anthropic API

Learn how to handle Tool Use failures gracefully by feeding error details back to Claude using the is_error flag, enabling self-diagnosis and automatic retry. Includes working Python code and production antipatterns to avoid.

API & SDK/2026-05-05Advanced

Building an Internal Document Search Agent with Claude API — Hybrid RAG, Role-Based Access Control, and Audit Logging in Production

Build a production-grade internal document search agent using Claude API and Python. Covers hybrid RAG (pgvector + BM25), department-level RBAC via PostgreSQL RLS, and compliance-ready audit logging — with working code for each component.

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.

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.

API & SDK/2026-05-04Intermediate

Claude API stop_sequences Not Working — 5 Things to Check Before You Give Up

Diagnose why your Claude API stop_sequences parameter isn't halting generation as expected. Practical breakdown of token boundaries, whitespace mismatches, Tool Use interactions, and streaming pitfalls — with copy-paste code examples.

API & SDK/2026-05-04Advanced

Claude API on Bun in Production: Migration Decisions and Implementation Patterns That Actually Survive Real Traffic

A practical guide to running Claude API services on Bun in production. Covers migration triggers from Node.js, built-in SQLite/WebSocket usage, streaming optimization, and the pitfalls that only surface after deployment — with working code and measured numbers.

API & SDK/2026-05-04Intermediate

Implementing Usage-Based Billing with Claude API + Stripe: A Minimal Setup for Indie Developers

Learn how to measure Claude API token consumption and implement usage-based billing with Stripe Meter Events. A minimal Node.js setup that indie developers can ship in a weekend, with real gotchas from production.

API & SDK/2026-05-04Beginner

7 Common Errors When Getting Started with Claude API in Python (With Fixes)

A practical troubleshooting guide covering the 7 most common errors Python developers hit when starting with the Claude API SDK — from AuthenticationError and RateLimitError to response parsing mistakes and streaming pitfalls.

API & SDK/2026-05-04Intermediate

Auto-Classify and Draft Gmail Replies with Claude API and Google Apps Script

A hands-on guide to building a Gmail automation system using Claude API and Google Apps Script. Automatically classify incoming emails and generate reply drafts — with copy-paste code.

API & SDK/2026-05-04Advanced

Building Stateful AI Agents with Cloudflare Durable Objects and Claude API — Session Management, Context Persistence, and Scale-Out Design

A complete production guide for building stateful AI agents using Cloudflare Durable Objects and Claude API. Covers session management, context persistence, compaction strategies, and scale-out design with fully working code examples.

API & SDK/2026-05-03Advanced

Building a Production-Grade Contract Review System with the Claude API — Risk Detection, Version Diffing, and Remediation Suggestions

A complete production guide for automating contract review with the Claude API: PDF parsing, risk clause detection, structured JSON output, version diffing, and remediation suggestions.