generated: '2026-08-27'
method: searched
source: https://platform.claude.com/docs/en/api/client-sdks
docs: https://docs.anthropic.com/en/api/client-sdks
packages:
- language: python
  registry: pypi
  name: anthropic
  url: https://pypi.org/project/anthropic/
  install: pip install anthropic
  repo: https://github.com/anthropics/anthropic-sdk-python
  official: true
  version: 1.1.0
  published: '2026-08-26'
  registry_metadata: https://pypi.org/pypi/anthropic/json
- language: javascript
  registry: npm
  name: '@anthropic-ai/sdk'
  url: https://www.npmjs.com/package/@anthropic-ai/sdk
  install: npm install @anthropic-ai/sdk
  repo: https://github.com/anthropics/anthropic-sdk-typescript
  official: true
  version: 0.121.0
  published: '2026-08-26'
  registry_metadata: https://registry.npmjs.org/@anthropic-ai/sdk
- language: java
  registry: maven-central
  name: com.anthropic:anthropic-java
  url: https://central.sonatype.com/artifact/com.anthropic/anthropic-java
  install: implementation("com.anthropic:anthropic-java:2.58.0")
  repo: https://github.com/anthropics/anthropic-sdk-java
  official: true
  version: 2.58.0
  published: '2026-08-26'
  registry_metadata: https://repo1.maven.org/maven2/com/anthropic/anthropic-java/maven-metadata.xml
- language: go
  registry: pkg.go.dev
  name: github.com/anthropics/anthropic-sdk-go
  url: https://pkg.go.dev/github.com/anthropics/anthropic-sdk-go
  install: go get github.com/anthropics/anthropic-sdk-go
  repo: https://github.com/anthropics/anthropic-sdk-go
  official: true
  version: v1.67.0
  published: '2026-08-26'
  registry_metadata: https://proxy.golang.org/github.com/anthropics/anthropic-sdk-go/@latest
- language: ruby
  registry: rubygems
  name: anthropic
  url: https://rubygems.org/gems/anthropic
  install: gem install anthropic
  repo: https://github.com/anthropics/anthropic-sdk-ruby
  official: true
  version: 1.66.0
  published: '2026-08-26'
  registry_metadata: https://rubygems.org/api/v1/gems/anthropic.json
- language: csharp
  registry: nuget
  name: Anthropic
  url: https://www.nuget.org/packages/Anthropic
  install: dotnet add package Anthropic
  repo: https://github.com/anthropics/anthropic-sdk-csharp
  official: true
  version: 12.43.0
  published: '2026-08-26'
  registry_metadata: https://api.nuget.org/v3/registration5-semver1/anthropic/index.json
- language: php
  registry: packagist
  name: anthropic-ai/sdk
  url: https://packagist.org/packages/anthropic-ai/sdk
  install: composer require anthropic-ai/sdk
  repo: https://github.com/anthropics/anthropic-sdk-php
  official: true
  version: v0.44.0
  published: '2026-08-26'
  registry_metadata: https://repo.packagist.org/p2/anthropic-ai/sdk.json
- language: javascript
  registry: npm
  name: '@anthropic-ai/claude-agent-sdk'
  url: https://www.npmjs.com/package/@anthropic-ai/claude-agent-sdk
  install: npm install @anthropic-ai/claude-agent-sdk
  repo: https://github.com/anthropics/claude-agent-sdk-typescript
  official: true
  note: Higher-level agent-loop SDK, not a Messages API client.
  version: 0.3.247
  published: '2026-08-26'
  registry_metadata: https://registry.npmjs.org/@anthropic-ai/claude-agent-sdk
- language: python
  registry: pypi
  name: claude-agent-sdk
  url: https://pypi.org/project/claude-agent-sdk/
  install: pip install claude-agent-sdk
  repo: https://github.com/anthropics/claude-agent-sdk-python
  official: true
  note: Higher-level agent-loop SDK, not a Messages API client.
  version: 0.2.145
  published: '2026-08-27'
  registry_metadata: https://pypi.org/pypi/claude-agent-sdk/json
- language: javascript
  registry: npm
  name: '@anthropic-ai/claude-code'
  url: https://www.npmjs.com/package/@anthropic-ai/claude-code
  install: npm install -g @anthropic-ai/claude-code
  repo: https://github.com/anthropics/claude-code
  official: true
  note: Claude Code terminal agent (ships the CLI binary).
  version: 2.1.247
  published: '2026-08-26'
  registry_metadata: https://registry.npmjs.org/@anthropic-ai/claude-code
- language: swift
  registry: swift-package-manager
  name: anthropic-sdk-swift
  url: https://docs.anthropic.com/en/cli-sdks-libraries/libraries/apple-foundation-models
  install: Swift Package Manager (Apple Foundation Models LanguageModel adapter, beta)
  official: true
  note: Beta Swift package exposing Claude as a server-side LanguageModel in Apple's Foundation Models
    framework. Distributed through Swift Package Manager as part of the Apple Foundation Models adapter;
    no queryable registry metadata endpoint, and Anthropic documents it only on the docs page (no pinned
    version in the install instruction), so version and date are checked-and-unavailable, not unchecked.
  version: null
  published: null
currency_checked: '2026-08-27'
currency_note: Every registry answered unauthenticated on 2026-08-27. Nine of ten first-party SDKs published
  a release on 2026-08-26 or 2026-08-27 — Anthropic releases the whole SDK fleet in lockstep from one
  Stainless-generated spec, so no SDK here lags the API. The tenth (the Swift/Foundation Models adapter)
  has no registry metadata endpoint to query.
spec_provenance: 'The SDK repos name their source spec in .stats.yml: https://storage.googleapis.com/stainless-sdk-openapi-specs/anthropic/anthropic-446ddab751d9f0172400b17fc72736e9353d3b49780317f90c24aa98357fd39e.yml
  (199 configured endpoints as of 2026-08-27). Harvested to openapi/_original/anthropic-api-openapi.json.'