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    • Developer Guide
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    First steps
    Intro to ClaudeQuickstart
    Models & pricing
    Models overviewChoosing a modelWhat's new in Claude 4.5Migrating to Claude 4.5Model deprecationsPricing
    Build with Claude
    Features overviewUsing the Messages APIContext windowsPrompting best practices
    Capabilities
    Prompt cachingContext editingExtended thinkingEffortStreaming MessagesBatch processingCitationsMultilingual supportToken countingEmbeddingsVisionPDF supportFiles APISearch resultsStructured outputs
    Tools
    OverviewHow to implement tool useFine-grained tool streamingBash toolCode execution toolProgrammatic tool callingComputer use toolText editor toolWeb fetch toolWeb search toolMemory toolTool search tool
    Agent Skills
    OverviewQuickstartBest practicesUsing Skills with the API
    Agent SDK
    OverviewQuickstartTypeScript SDKTypeScript V2 (preview)Python SDKMigration Guide
    MCP in the API
    MCP connectorRemote MCP servers
    Claude on 3rd-party platforms
    Amazon BedrockMicrosoft FoundryVertex AI
    Prompt engineering
    OverviewPrompt generatorUse prompt templatesPrompt improverBe clear and directUse examples (multishot prompting)Let Claude think (CoT)Use XML tagsGive Claude a role (system prompts)Prefill Claude's responseChain complex promptsLong context tipsExtended thinking tips
    Test & evaluate
    Define success criteriaDevelop test casesUsing the Evaluation ToolReducing latency
    Strengthen guardrails
    Reduce hallucinationsIncrease output consistencyMitigate jailbreaksStreaming refusalsReduce prompt leakKeep Claude in character
    Administration and monitoring
    Admin API overviewUsage and Cost APIClaude Code Analytics API
    Console
    Log in
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    Solutions

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    Partners

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    Learn

    • Blog
    • Catalog
    • Courses
    • Use cases
    • Connectors
    • Customer stories
    • Engineering at Anthropic
    • Events
    • Powered by Claude
    • Service partners
    • Startups program

    Help and security

    • Availability
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    Terms and policies

    • Privacy policy
    • Responsible disclosure policy
    • Terms of service: Commercial
    • Terms of service: Consumer
    • Usage policy
    First steps

    Get started with Claude

    Make your first API call to Claude and build a simple web search assistant

    Prerequisites

    • An Anthropic Console account
    • An API key

    Call the API

    Next steps

    Now that you have made your first Claude API request, it's time to explore what else is possible:

    Working with Messages

    Learn common patterns for the Messages API.

    Features Overview

    Explore Claude's advanced features and capabilities.

    • Prerequisites
    • Call the API
    • Next steps
    Client SDKs

    Discover Anthropic client libraries.

    Claude Cookbook

    Learn with interactive Jupyter notebooks.