AI Economics Tools
AI
Token cost, LLM energy, agent-hour and Proof-Adjusted Autonomy calculators by Michał Piszczek
No keyCORSHTTPS
Claude API
The Claude API enables developers to integrate advanced AI capabilities into their applications. It allows users to access the latest Claude models, including Opus, Sonnet, and Haiku, and provides a versatile platform for various use cases such as coding assistance, chatbot functionalities, and more.
Verified 4 days ago: 50% uptime
API key
Unconfirmed
HTTPS
Supported
Browser calls
No, needs a proxy
Status
Live · 79/100
What our checks found
- Health score
- 79/100
- Reliability
- 50%
- Average latency
- 499ms
Last checked 2026-09-18. Measured independently, not self-reported by the provider.
How to call it
A starting template for Claude API. Replace ENDPOINT with the path from the official documentation, which we link above rather than guess at.
# Authentication requirement is unconfirmed. Check the documentation before relying on this.
curl -s "https://platform.claude.com/ENDPOINT" \
-H "Authorization: Bearer YOUR_TOKEN" \
-H "Accept: application/json"This API does not send CORS headers, so a browser will block a direct call from your front end. Call it from your server, or put a small proxy in front of it.
Where this listing comes from
Aggregated from one public source (freepublicapis), then normalised and checked by us. If something here is wrong, tell us and we will correct it.
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Claude API — common questions
Answered from what our own scheduled checks found, not from the provider's marketing.
Is Claude API free to use?
Claude API is listed in our free catalogue, but it requires some form of authentication, so you will need to register before your first call. Providers frequently reserve higher limits and commercial use for paid plans.
Does Claude API need an API key?
Claude API requires some form of authentication. Check the provider's documentation for which scheme it expects.
Can I call Claude API from browser JavaScript?
Not directly. Claude API did not return CORS headers when we checked, so the browser will block your page from reading the response even though the request itself succeeds. Call it from a server, or put a small proxy in front of it.
Is Claude API still working?
Yes, as of 2026-09-18. Our automated check reached Claude API and recorded a 50% reliability score with a median response time of 499 ms. We re-check on a schedule, and this page updates with the result.
Is Claude API available over HTTPS?
Yes. Claude API serves over HTTPS, so you can call it from a secure page without triggering a mixed-content block.