How One Parent Used AI Agents and Spotify to Build a 6-Hour Baptism Party Playlist

A developer used an AI agent called Hermes and Claude Code to build a curated 101-track, 6.2-hour playlist for their child's baptism party at a pub. Rather than specifying individual songs, the parent wrote a structural brief covering genre blocks — from warm R&B and afrobeats to UK garage and slow jams — with DJ Chuckie Online's mixes as a reference point. The first automated attempt failed badly, producing 60 tracks of rap with duplicates and explicit songs because the Spotify tool lacked a mode for brief- or reference-based playlist building. The project was rebuilt using Claude Code, sourcing accurate tracklists from YouTube chapter listings and BBC programme pages, while filtering out explicit tracks unsuitable for a christening. The author also documented several Spotify API changes in early 2026, including renamed endpoints that return 403 errors instead of 404, a 10-result search cap in developer mode, and rate limits triggered after roughly 250 searches in a single session.