GitHub's content API is available over CORS: https://tools.simonwillison.net/cors-fetch#method=PUT&url=https%3A%2F%2Fapi.github.com%2Frepos%2Fsimonw%2Fdatasette

GitHub's content API is available over CORS: https://tools.simonwillison.net/cors-fetch#method=PUT&url=https%3A%2F%2Fapi.github.com%2Frepos%2Fsimonw%2Fdatasette%2Fcontents%2FREADME.md&bodyType=json&json=%7B%22message%22%3A%22my+commit+message%22%2C%22committer%22%3A%7B%22name%22%3A%22Monalisa+Octocat%22%2C%22email%22%3A%22octocat%40github.com%22%7D%2C%22content%22%3A%22bXkgbmV3IGZpbGUgY29udGVudHM%3D%22%7D&headers=%5B%7B%22key%22%3A%22Accept%22%2C%22value%22%3A%22application%2Fvnd.github%2Bjson%22%7D%2C%7B%22key%22%3A%22Authorization%22%2C%22value%22%3A%22Bearer+%3CYOUR-TOKEN%3E%22%7D%2C%7B%22key%22%3A%22X-GitHub-Api-Version%22%2C%22value%22%3A%222026-03-10%22%7D%5D https://tools.simonwillison.net/cors-fetch#method=PUT&url=ht... I've built client-side apps that store a GitHub token in localStorage and send them with fetch() for creating Gists and that works fine: https://tools.simonwillison.net/terminal-to-html https://tools.simonwillison.net/terminal-to-html