21st November 2025
Tool
CORS Fetch Tester
— Test HTTP requests directly from your browser and observe which response headers and body content are accessible under CORS (Cross-Origin Resource Sharing) restrictions. This tool lets you construct requests with custom methods, headers, and body content, import requests from curl commands, and format JSON responses for easier inspection. The application preserves your request configuration in the URL fragment, allowing you to share and bookmark specific test cases.
Recent articles
- Claude Opus 4.8: "a modest but tangible improvement" - 28th May 2026
- I think Anthropic and OpenAI have found product-market fit - 27th May 2026
- Notes on Pope Leo XIV's encyclical on AI - 25th May 2026