api/client-sdks.md

Changed on 2026-08-12 12:52:13 EST

+15 lines added

-14 lines removed

Visual Diff

#---¶
title: CLI, SDKs, and libraries¶
¶
url: https://platform.claude.com/docs/en/cli-sdks-libraries/overview¶
description: "Official tools for building with the Claude API: the ant CLI, client SDKs in seven languages, and framework-specific libraries.¶
"¶
---¶
¶
Anthropic provides three kinds of official tooling for building with the Claude API:¶
¶
* **CLI:** The `ant` command-line tool for shell scripting and interactive use.¶
* **Client SDKs:** General-purpose Messages API clients for Python, TypeScript, C#, Go, Java, PHP, and Ruby. Each SDK provides idiomatic interfaces, type safety, and built-in support for streaming, retries, and error handling.¶
* **Libraries and integrations:** Packages and compatibility layers that expose Claude inside another framework's API surface rather than the Messages API directly.¶
¶
<Info>¶
For the full API specification, see the [API reference](https://platform.claude.com/docs/en/api/overview).¶
</Info>¶
¶
## CLI¶
¶
<CardGroup cols={3}>¶
<Card title="ant CLI" href="https://platform.claude.com/docs/en/cli-sdks-libraries/cli/quickstart">¶
Shell scripting, typed flags, response transforms¶
</Card>¶
</CardGroup>¶
¶
## Client SDKs¶
¶
<CardGroup cols={3}>¶
<Card title="Python" href="https://platform.claude.com/docs/en/cli-sdks-libraries/sdks/python">¶
Sync and async clients, Pydantic models¶
</Card>¶
¶
<Card title="TypeScript" href="https://platform.claude.com/docs/en/cli-sdks-libraries/sdks/typescript">¶
Node.js, Deno, Bun, and browser support¶
</Card>¶
¶
<Card title="C#" href="https://platform.claude.com/docs/en/cli-sdks-libraries/sdks/csharp">¶
.NET Standard 2.0+, IChatClient integration¶
</Card>¶
¶
<Card title="Go" href="https://platform.claude.com/docs/en/cli-sdks-libraries/sdks/go">¶
Context-based cancellation, functional options¶
</Card>¶
¶
<Card title="Java" href="https://platform.claude.com/docs/en/cli-sdks-libraries/sdks/java">¶
Builder pattern, CompletableFuture async¶
</Card>¶
¶
<Card title="PHP" href="https://platform.claude.com/docs/en/cli-sdks-libraries/sdks/php">¶
Value objects, builder pattern¶
</Card>¶
¶
<Card title="Ruby" href="https://platform.claude.com/docs/en/cli-sdks-libraries/sdks/ruby">¶
Sorbet types, streaming helpers¶
</Card>¶
</CardGroup>¶
¶
## Libraries and integrations¶
¶
Libraries and integrations expose Claude through another framework's API surface. They are not general-purpose Messages API clients.¶
¶
<CardGroup cols={3}>¶
<Card title="Apple Foundation Models" href="https://platform.claude.com/docs/en/cli-sdks-libraries/libraries/apple-foundation-models">¶
Swift package for Apple's `LanguageModelSession` API¶
</Card>¶
¶
<Card title="OpenAI SDK compatibility" href="https://platform.claude.com/docs/en/cli-sdks-libraries/libraries/openai-sdk">¶
Use Claude through the OpenAI SDK surface¶
</Card>¶
</CardGroup>¶
¶
## Building agents or using Claude Code?¶
¶
The CLI, client SDKs, and libraries are for calling the Claude API yourself: you send each request and handle each response. Claude Code, the Claude Agent SDK, and Claude Managed Agents work at a higher level, providing the agent loop, tool execution, and runtime.¶
¶
<CardGroup cols={3}>¶
<Card title="Claude Code" href="https://code.claude.com/docs/en/overview">¶
Agentic coding tool for delegating coding tasks to Claude¶
</Card>¶
¶
<Card title="Claude Agent SDK" href="https://code.claude.com/docs/en/agent-sdk/overview">¶
Build agents that run in a process you operate¶
</Card>¶
¶
<Card title="Claude Managed Agents" href="https://platform.claude.com/docs/en/managed-agents/overview">¶
Run agents in Anthropic's managed infrastructure¶
</Card>¶
</CardGroup>¶

Unified Diff

--- a/api/client-sdks.md
+++ b/api/client-sdks.md
@@ -1,7 +1,7 @@
-# CLI, SDKs, and libraries
-
-Official tools for building with the Claude API: the ant CLI, client SDKs in seven languages, and framework-specific libraries.
-
+---
+title: CLI, SDKs, and libraries
+url: https://platform.claude.com/docs/en/cli-sdks-libraries/overview
+description: "Official tools for building with the Claude API: the ant CLI, client SDKs in seven languages, and framework-specific libraries."
 ---
 
 Anthropic provides three kinds of official tooling for building with the Claude API:
@@ -11,13 +11,13 @@
 * **Libraries and integrations:** Packages and compatibility layers that expose Claude inside another framework's API surface rather than the Messages API directly.
 
 <Info>
-  For the full API specification, see the [API reference](/docs/en/api/overview).
+  For the full API specification, see the [API reference](https://platform.claude.com/docs/en/api/overview).
 </Info>
 
 ## CLI
 
 <CardGroup cols={3}>
-  <Card title="ant CLI" href="/docs/en/cli-sdks-libraries/cli/quickstart">
+  <Card title="ant CLI" href="https://platform.claude.com/docs/en/cli-sdks-libraries/cli/quickstart">
     Shell scripting, typed flags, response transforms
   </Card>
 </CardGroup>
@@ -25,31 +25,31 @@
 ## Client SDKs
 
 <CardGroup cols={3}>
-  <Card title="Python" href="/docs/en/cli-sdks-libraries/sdks/python">
+  <Card title="Python" href="https://platform.claude.com/docs/en/cli-sdks-libraries/sdks/python">
     Sync and async clients, Pydantic models
   </Card>
 
-  <Card title="TypeScript" href="/docs/en/cli-sdks-libraries/sdks/typescript">
+  <Card title="TypeScript" href="https://platform.claude.com/docs/en/cli-sdks-libraries/sdks/typescript">
     Node.js, Deno, Bun, and browser support
   </Card>
 
-  <Card title="C#" href="/docs/en/cli-sdks-libraries/sdks/csharp">
+  <Card title="C#" href="https://platform.claude.com/docs/en/cli-sdks-libraries/sdks/csharp">
     .NET Standard 2.0+, IChatClient integration
   </Card>
 
-  <Card title="Go" href="/docs/en/cli-sdks-libraries/sdks/go">
+  <Card title="Go" href="https://platform.claude.com/docs/en/cli-sdks-libraries/sdks/go">
     Context-based cancellation, functional options
   </Card>
 
-  <Card title="Java" href="/docs/en/cli-sdks-libraries/sdks/java">
+  <Card title="Java" href="https://platform.claude.com/docs/en/cli-sdks-libraries/sdks/java">
     Builder pattern, CompletableFuture async
   </Card>
 
-  <Card title="PHP" href="/docs/en/cli-sdks-libraries/sdks/php">
+  <Card title="PHP" href="https://platform.claude.com/docs/en/cli-sdks-libraries/sdks/php">
     Value objects, builder pattern
   </Card>
 
-  <Card title="Ruby" href="/docs/en/cli-sdks-libraries/sdks/ruby">
+  <Card title="Ruby" href="https://platform.claude.com/docs/en/cli-sdks-libraries/sdks/ruby">
     Sorbet types, streaming helpers
   </Card>
 </CardGroup>
@@ -59,11 +59,11 @@
 Libraries and integrations expose Claude through another framework's API surface. They are not general-purpose Messages API clients.
 
 <CardGroup cols={3}>
-  <Card title="Apple Foundation Models" href="/docs/en/cli-sdks-libraries/libraries/apple-foundation-models">
+  <Card title="Apple Foundation Models" href="https://platform.claude.com/docs/en/cli-sdks-libraries/libraries/apple-foundation-models">
     Swift package for Apple's `LanguageModelSession` API
   </Card>
 
-  <Card title="OpenAI SDK compatibility" href="/docs/en/cli-sdks-libraries/libraries/openai-sdk">
+  <Card title="OpenAI SDK compatibility" href="https://platform.claude.com/docs/en/cli-sdks-libraries/libraries/openai-sdk">
     Use Claude through the OpenAI SDK surface
   </Card>
 </CardGroup>
@@ -81,7 +81,7 @@
     Build agents that run in a process you operate
   </Card>
 
-  <Card title="Claude Managed Agents" href="/docs/en/managed-agents/overview">
+  <Card title="Claude Managed Agents" href="https://platform.claude.com/docs/en/managed-agents/overview">
     Run agents in Anthropic's managed infrastructure
   </Card>
 </CardGroup>