Key specs (API):

• Opus 4.6: claude-opus-4-6 • $5/$25 per MTok • 200K standard / 1M beta context
• Sonnet 4.6: claude-sonnet-4-6 • $3/$15 per MTok • 200K standard / 1M beta context
• Haiku 4.5: claude-haiku-4-5 • $1/$5 per MTok • 200K context
  Premium pricing for >200K tokens. Full comparison: Models overview

🔌 API & Developer Platform

• Claude Developer Console - API keys, prompt testing, usage monitoring, Claude Code sessions.
• Official Documentation - Full reference for Messages API, tool use, computer use, prompt caching, structured outputs, citations, MCP Connector, and Claude Code.
• Models & Pricing - Latest model IDs, pricing, context windows, thinking features, and cloud provider IDs.

🔧 SDKs & Development Tools

Official Client SDKs - Full feature parity: messages, tools, streaming, caching, computer use.

• anthropic-sdk-python - Python SDK with async support and type hints.
• anthropic-sdk-typescript - TypeScript/JavaScript SDK for Node.js and browsers.
• anthropic-sdk-java - Java/Kotlin SDK with modern features.
• anthropic-sdk-go - Go SDK with idiomatic design.
• anthropic-sdk-ruby - Ruby SDK.
• anthropic-sdk-csharp - C#/.NET SDK (Beta).
• anthropic-sdk-php - PHP SDK (Beta).

Agent SDKs - Build custom autonomous agents with Claude Code capabilities.

• claude-agent-sdk-python - Python Agent SDK. Docs
• claude-agent-sdk-typescript - TypeScript Agent SDK.

Starters

• Claude Cookbook - Official notebooks and recipes for common patterns (RAG, tool use, Skills, MCP).
• Claude Quickstarts - Ready-to-deploy example apps.

☁️ Cloud Providers

Official access to Claude models through cloud providers (all support Opus 4.6 / Sonnet 4.6)

• Amazon Bedrock - Fully managed access to the latest Claude models (Opus 4.6, Sonnet 4.6, Haiku 4.5). Supports cross-region inference (new regions: Thailand, Malaysia, Singapore, Indonesia, Taiwan), latency optimizations, fine-tuning, agents, guardrails, and deep AWS integration.
• Google Cloud Vertex AI Model Garden - Deploy Claude models with provisioned throughput, prompt caching, batch predictions, grounding, and enterprise compliance (FedRAMP High). Great for building agents with Google Cloud tools.
• Microsoft Azure AI Model Catalog (Anthropic Publisher) - Claude models via the AI Model Catalog. Supports serverless deployment, agent building, tool integration, fine-tuning, and billing through existing Azure agreements.

🛡️ Transparency & Safety

Detailed evaluations, risk assessments, and alignment insights for Claude models

• Transparency Hub - Overview of safety evaluations and improvements across models.
• All System Cards - Index of all model system cards.
  • Claude Opus 4.6 System Card - Capability and safety report (Feb 2026).
  • Claude Sonnet 4.6 System Card - Detailed evaluations (Feb 2026).
  • Claude Opus 4.5 System Card - Comprehensive capability and safety report (Nov 2025).
  • Claude Haiku 4.5 System Card - Safety and performance report (Oct 2025).
• Claude Code Security - Security model and threat analysis for Claude Code (Feb 2026).

🛠️ Claude Code & Model Context Protocol (MCP)

Anthropic's agentic coding platform and open extension standard

🤖 Claude Code

Terminal-first agentic coding tool (CLI), with VS Code/JetBrains IDE integrations, Desktop GUI (Cowork), and browser control. Understands entire codebases, plans and executes multi-step tasks, edits files, runs git/shell, creates PRs, and integrates browser control.

• Official site & docs - Getting started, commands, memory, hooks, GitHub Actions, IDE setup.
• Product page - Overview of Claude Code features and plans.
• Claude Desktop - macOS + Windows app; includes Cowork GUI for non-technical workflows and the dedicated Code tab.
• Install CLI: curl -fsSL https://claude.ai/install.sh | bash (macOS/Linux) or via Homebrew/Winget.
• Claude for Chrome (Beta) - Integrates with Claude Code for browser control (multi-tab workflows, Slack, Gmail, GitHub).

🔌 Model Context Protocol (MCP)

Open standard (Linux Foundation) for connecting Claude to tools, repos, databases, tickets, and more. Supports one-click desktop extensions (.mcpb files).

• MCP official site - Spec, SDKs, and quickstart.
• Introduction to MCP - Official Anthropic course: build MCP servers and clients from scratch in Python.
• MCP: Advanced Topics - Sampling, notifications, transports.
• punkpeye/awesome-mcp-servers - Curated community list of MCP servers.

⭐ Community Curated Lists

Awesome lists and collections maintained by the community

• hesreallyhim/awesome-claude-code - Slash-commands, CLAUDE.md files, CLI tools, and workflows for Claude Code.
• travisvn/awesome-claude-skills - Resources and tools for customizing AI workflows with Claude Skills.
• BehiSecc/awesome-claude-skills - Categorized skills for document handling, development tools, data analysis, and more.
• langgptai/awesome-claude-prompts - Collection of prompt examples designed to improve Claude interactions.
• vijaythecoder/awesome-claude-agents - Team of specialized AI agents for build