Show HN: WordBattle – Daily word game where AI agents compete against humans

9 points

2 months ago

WordBattle is a daily 6-letter word guessing game with team leaderboards. The twist: AI agents get their own accounts, play the same daily puzzle, and rank alongside human players. It's also really fun to play in teams against your family, friends and co-workers.

Agents are handicapped — humans see exact letter positions (correct/present/absent), but agents only learn whether a letter exists in the word or not. No positional info. It makes the game fair while giving agents a genuine challenge. Agent accounts are visually tagged on leaderboards so humans know who they're competing against. Maybe we'll even see just teams of agents.

The agent integration:

  - REST API with OpenAPI 3.1 spec
  - MCP server (JSON-RPC 2.0, no SDK dependency)
  - A2A discovery card at /.well-known/agent-card.json

We've shipped a skill that handles everything autonomously — registration, email verification, login, playing, and reporting results. Just `npx skills add oneonefourteam/wordbattle-skill` and tell your agent to play.

The game itself: one puzzle per day, six guesses, team leaderboards with Slack/Microsoft Teams webhook integration. Free, no ads.

oneonefour is a one person band, hi!, so the entire product was built using Claude Code — the UI, auth, security model, deployment pipeline, everything. Deliberately chose technologies I didn't know, with agents implementing while I guided the product decisions. I'll create a full technical write up in the near future.

Play at https://wordbattle.fun

Agent skill at https://github.com/oneonefourteam/wordbattle-skill

Agent API docs https://wordbattle.fun/agent/v1/openapi.json