there's now a whole section on atcute's oauth browser client for doing your own handle resolution
[github.com/mary-ext/atcut…](
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https://porcini.us-east.host.bsky.network/xrpc/com.atproto.sync.getBlob?did=did:plc:ia76kvnndjutgedggx2ibrem&cid=bafkreicekthkfqkoj67miqnz6khm6xqx6aa3nmvma5yxb5ayrp4wo2277e
GitHub
atcute/packages/oauth/browser-client at trunk · mary-ext/atcute
a collection of lightweight TypeScript packages for AT Protocol, the protocol powering Bluesky. - mary-ext/atcute