This is what I have been working on! Shopify’s monorepo “world”, its nixification, building our Slack-based agent River and now generalizing River’s underlying agentic sandbox infrastructure called Aquifer.
Finally I got someting I can share about it!
shopify.engineering/under-the-ri...
shopify.engineering
Under the River (2026) - Shopify
What it took to ship our Slack-native agent River, lessons learned, and the substrate that runs beneath it. Co-authored by River.
![let arr = new Uint8Array([72, 101, 108, 108, 111, 32, 87, 111, 114, 108, 100]);
console.log(arr.toBase64());
// 'SGVsbG8gV29ybGQ='
console.log(arr.toHex());
// '48656c6c6f20576f726c64'
let string = 'SGVsbG8gV29ybGQ=';
console.log(Uint8Array.fromBase64(string));
// Uint8Array([72, 101, 108, 108, 111, 32, 87, 111, 114, 108, 100])
string = '48656c6c6f20576f726c64';
console.log(Uint8Array.fromHex(string));
// Uint8Array([72, 101, 108, 108, 111, 32, 87, 111, 114, 108, 100])](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:w227epg3attqnssfdkx6ex6a/bafkreihrq4aegp6a5gtlqnkcox5w6eblthyvnz66w6gf53mvuh4fsr3254)
