Anthropic's Claude API provides direct access to Claude language models and managed agent infrastructure through REST and streaming interfaces. It supports messages, tool use, vision, token counting, files, batches, model discovery, and official SDKs.
Trust signals
Pricing
PAID
Auth
API_KEY
CORS
No
Rate limit
Usage-tier limits based on requests and tokens per minute; exact limits vary by model and account tier.
Health
188ms
Trust score
89 (B)
Strong candidate; weakest signal is CORS.
Links
- Homepagewww.anthropic.com
- Documentationplatform.claude.com/docs/en/api/overview
- Base URLapi.anthropic.com/v1
Integration checklist
- Auth is API_KEY
- No CORS — route calls through your backend.
- Rate limit: Usage-tier limits based on requests and tokens per minute; exact limits vary by model and account tier.