# Claude API

Build with Claude through the Messages API\.

Canonical: https://claudelist.com/listings/claude-api

Category: SDKs & APIs

Source: official · Anthropic

Source checked: 2026-10-14

Website: https://platform.claude.com/docs/en/api/overview

The API reference is the canonical source for requests, responses and supported features.

## Install or set up

1. Create an Anthropic Console account and API key. Install an official SDK for your language, store the key as `ANTHROPIC_API_KEY`, and follow the linked API quickstart. The API itself is hosted and has no package to install.

Installation guide: https://platform.claude.com/docs/en/api/overview