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Use Claude on Apple platforms through the Foundation Models framework with the Claude for Foundation Models Swift package. Claude for Foundation Models is a Swift package that makes Claude available as a server-side language model in Apple's Foundation Models framework. The package conforms Claude to the framework's LanguageModel protocol, so you drive it with the same LanguageModelSession API you
Claude Fable 5 と Claude Mythos 5 における動作の違いとプロンプティングパターンについて、エフォート、指示追従、長時間実行、メモリ、スキャフォールディングの変更点を解説します。 このガイドでは、Claude Fable 5 と Claude Mythos 5 に固有のプロンプティングおよびスキャフォールディングのパターンについて説明します。モデルの機能、API の変更点、価格、提供状況については、Claude Fable 5 と Claude Mythos 5 の紹介を参照してください。現行のすべての Claude モデルに適用できる手法については、プロンプティングのベストプラクティスを参照してください。 Claude Fable 5 は、従来のモデルでは複雑すぎる、長時間かかりすぎる、または曖昧すぎるとされていた問題に取り組むことができ、人間が数時間、数日、
Behavioral differences and prompting patterns for Claude Fable 5 and Claude Mythos 5, covering effort, instruction following, long runs, memory, and scaffolding changes. This guide covers the prompting and scaffolding patterns specific to Claude Fable 5 and Claude Mythos 5. For the model's capabilities, API changes, pricing, and availability, see Introducing Claude Fable 5 and Claude Mythos 5. For
Install the ant command-line tool, authenticate, and send your first request to the Claude API. The ant CLI provides access to the Claude API from your terminal. Every API resource is exposed as a subcommand, with output formatting, response filtering, and YAML or JSON file input. The ant CLI in action. Compared to curl, ant builds request bodies from typed flags or piped YAML instead of hand-writ
Authenticate workloads to the Claude API with short-lived identity tokens from your own identity provider instead of long-lived static API keys. Workload Identity Federation (WIF) lets your workloads authenticate to the Claude API using short-lived OpenID Connect (OIDC) tokens issued by an identity provider (IdP) you already operate, such as AWS IAM, Google Cloud, or any standards-compliant OIDC i
This guide covers migrating Messages API code. If you use Claude Managed Agents, no changes beyond updating model name are required. Claude Opus 4.7 is our most capable generally available model to date. It is highly autonomous and performs exceptionally well on long-horizon agentic work, knowledge work, vision tasks, and memory tasks. Claude Opus 4.7 should have strong out-of-the-box performance
Pair a faster executor model with a higher-intelligence advisor model that provides strategic guidance mid-generation. The advisor tool lets a faster, lower-cost executor model consult a higher-intelligence advisor model mid-generation for strategic guidance. The advisor reads the full conversation, produces a plan or course correction (typically 400 to 700 text tokens, 1,400 to 1,800 tokens total
Pre-built, configurable agent harness that runs in managed infrastructure. Best for long-running tasks and asynchronous work.
Claude can generate high-quality frontends, but without guidance it tends toward generic, conservative designs. This guide shows you how to prompt Claude to produce more distinctive, polished output. Claude has strong knowledge of design principles, typography, and color theory, but defaults to safe choices unless explicitly encouraged otherwise. Through experimentation, we've found three strategi
このガイドでは、Claude Opus 4.6、Claude Sonnet 4.5、Claude Haiku 4.5を含むClaudeの最新モデルに対するプロンプトエンジニアリング技術を提供します。これらのモデルは、以前の世代のClaudeモデルよりも正確な指示追従のためにトレーニングされています。
Agent Skills are modular capabilities that extend Claude's functionality. Each Skill packages instructions, metadata, and optional resources (scripts, templates) that Claude uses automatically when relevant. Skills are reusable, filesystem-based resources that provide Claude with domain-specific expertise: workflows, context, and best practices that transform general-purpose agents into specialist
優れたスキルは簡潔で、よく構造化されており、実際の使用でテストされています。このガイドは、Claudeが効果的にスキルを発見して使用できるスキルを作成するのに役立つ実践的な作成上の決定を提供します。
While these tips apply broadly to all Claude models, you can find prompting tips specific to extended thinking models here.
Agent Skillsは、Claudeの機能を拡張するモジュール型の機能です。各Skillは、Claudeが関連する場合に自動的に使用する指示、メタデータ、およびオプションのリソース（スクリプト、テンプレート）をパッケージ化します。 Skillsは、Claudeに領域固有の専門知識を提供する再利用可能なファイルシステムベースのリソースです。ワークフロー、コンテキスト、ベストプラクティスにより、汎用エージェントを専門家に変えます。プロンプト（1回限りのタスク用の会話レベルの指示）とは異なり、Skillsはオンデマンドで読み込まれ、複数の会話で同じガイダンスを繰り返し提供する必要がなくなります。 主な利点: Claudeを専門化する: 領域固有のタスク用に機能をカスタマイズする 繰り返しを削減する: 1回作成して、自動的に使用する 機能を組み合わせる: Skillsを組み合わせて複雑なワーク
The Claude Code SDK has been renamed to the Claude Agent SDK. If you’re migrating from the old SDK, see the Migration Guide. Build AI agents that autonomously read files, run commands, search the web, edit code, and more. The Agent SDK gives you the same tools, agent loop, and context management that power Claude Code, programmable in Python and TypeScript. import asyncio from claude_agent_sdk imp
The tool search tool enables Claude to work with hundreds or thousands of tools by dynamically discovering and loading them on-demand. Instead of loading all tool definitions into the context window upfront, Claude searches your tool catalog (including tool names, descriptions, argument names, and argument descriptions) and loads only the tools it needs. This approach solves two problems that comp
Comprehensive guide to prompt engineering techniques for Claude's latest models, covering clarity, examples, XML structuring, thinking, and agentic systems. This is the reference for prompt engineering with Claude's latest models, including Claude Fable 5, Claude Mythos 5, Claude Opus 4.8, Claude Opus 4.7, Claude Opus 4.6, Claude Sonnet 5, Claude Sonnet 4.6, and Claude Haiku 4.5. The page is organ
Learn how to write effective Skills that Claude can discover and use successfully. Good Skills are concise, well-structured, and tested with real usage. This guide provides practical authoring decisions to help you write Skills that Claude can discover and use effectively. For conceptual background on how Skills work, see the Skills overview. The context window is a public good. Your Skill shares
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MCP (Model Context Protocol) is an open-source standard for connecting AI applications to external systems. Using MCP, AI applications like Claude or ChatGPT can connect to data sources (e.g. local files, databases), tools (e.g. search engines, calculators) and workflows (e.g. specialized prompts)—enabling them to access key information and perform tasks. Think of MCP like a USB-C port for AI appl
This feature is eligible for Zero Data Retention (ZDR). When your organization has a ZDR arrangement, data sent through this feature is not stored after the API response is returned. Claude can use an Anthropic-schema text editor tool to view and modify text files, helping you debug, fix, and improve your code or other text documents. This allows Claude to directly interact with your files, provid
Claude Code is an agentic coding tool that reads your codebase, edits files, runs commands, and integrates with your development tools. Available in your terminal, IDE, desktop app, and browser. Claude Code is an AI-powered coding assistant that helps you build features, fix bugs, and automate development tasks. It understands your entire codebase and can work across multiple files and tools to ge
Documentation IndexFetch the complete documentation index at: /docs/llms.txt Use this file to discover all available pages before exploring further.
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