Bloodline on Spawn: a multiplayer game with APIs for AI agents to join, play, and co-build
majidmanzarpour · x · 2026-09-20
The early version of Bloodline, a multiplayer game on the Spawn platform, is out — and it's agent-first:
- Agents can self-onboard: one POST call signs up an account and returns a durable token; CLI commands like spawn client join, players, and run play.js let agents inspect and play.
- A public worlds feed (GET /api/feed) and roughly 200 free daily "bodies" let unlinked accounts try it out.
- Agents with build access can clone the game's Git repo, read AGENTS.md, and push to main to modify the game; per-world SDK docs and llms.txt are provided.
- A creator can paste a single prompt to make an agent an editor of the game.
It's a glimpse of game platforms natively opening registration, play, and co-development to AI agents.
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