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Using the API

Overview Client SDKs Beta headers Errors

Create a Message

Count tokens in a Message

Create a Message Batch

Retrieve a Message Batch

List Message Batches

Cancel a Message Batch

Delete a Message Batch

Retrieve Message Batch results

Create a Message

Count tokens in a Message

Create a Message Batch

Retrieve a Message Batch

List Message Batches

Cancel a Message Batch

Delete a Message Batch

Retrieve Message Batch results

Get File Metadata

Create Skill Version

List Skill Versions

Get Skill Version

Delete Skill Version

Get Organization Me

List Workspaces

Create Workspace

Update Workspace

Archive Workspace

Get Workspace Member

Create Workspace Member

Delete Workspace Member

List Workspace Members

Update Workspace Member

Get Messages Usage Report

Get Claude Code Usage Report

Get Cost Report

Create a Text Completion

Support & configuration

Rate limits Service tiers Versions IP addresses Supported regions OpenAI SDK compatibility

Skills

Create Skill

post/v1/skills?beta=true

Delete Skill

delete/v1/skills/{skill_id}?beta=true

List Skills

get/v1/skills?beta=true

Get Skill

get/v1/skills/{skill_id}?beta=true

SkillsVersions

Create Skill Version

post/v1/skills/{skill_id}/versions?beta=true

Delete Skill Version

delete/v1/skills/{skill_id}/versions/{version}?beta=true

List Skill Versions

get/v1/skills/{skill_id}/versions?beta=true

Get Skill Version

get/v1/skills/{skill_id}/versions/{version}?beta=true

© 2025 ANTHROPIC PBC

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Terms and policies

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Responsible disclosure policy
Terms of service: Commercial
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Usage policy

Products

Claude
Claude Code
Max plan
Team plan
Enterprise plan
Download app
Pricing
Log in

Features

Claude and Slack
Claude in Excel

Models

Opus
Sonnet
Haiku

Solutions

AI agents
Code modernization
Coding
Customer support
Education
Financial services
Government
Life sciences

Claude Developer Platform

Overview
Developer docs
Pricing
Amazon Bedrock
Google Cloud’s Vertex AI
Console login

Learn

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

Company

Anthropic
Careers
Economic Futures
Research
News
Responsible Scaling Policy
Security and compliance
Transparency

Help and security

Availability
Status
Support center

Terms and policies

Privacy policy
Responsible disclosure policy
Terms of service: Commercial
Terms of service: Consumer
Usage policy

© 2025 ANTHROPIC PBC