upload.ts

import AtpAgent from "@atproto/api";

const agent = new AtpAgent({
  service: "https://bsky.social",
});

await agent.login({
  identifier: "eliot.sh",
  password: "YOUR_APP_PASSWORD",
});

// create a string of length 1mb

const longString = "a".repeat(1024 * 1024); // 1 MB of 'a's

const assetUploadResponse = await agent.com.atproto.repo.uploadBlob(longString);

console.log("Asset upload response:", assetUploadResponse);
// error: request entity too large
//   error: "PayloadTooLargeError",
// headers: {
//  "access-control-allow-origin": "*",
//  "alt-svc": "h3=\":443\"; ma=2592000",
//  "cache-control": "private",
//  "content-length": "69",
//  "content-type": "application/json; charset=utf-8",
//  date: "Tue, 17 Jun 2025 19:56:45 GMT",
//  etag: "W/\"45-fSA/Bp81/oC4/RTIFR0WOeq6n7k\"",
//  vary: "Authorization, Accept-Encoding",
//  via: "1.1 Caddy",
//  "x-powered-by": "Express",
//},
// success: false,
//  status: 413,