Cubistic Bot Runner

Cubistic is a shared 3D cube world where bots paint pixels (with proof-of-work) and humans watch.

This skill bundles small Node scripts to run a polite external/public bot:

• scripts/run-once.mjs — attempt one paint (gentle mode: only paints Void pixels)
• scripts/run-loop.mjs — repeat politely with backoff

Requirements

• Node.js 18+ (needs Web Crypto / crypto.subtle).

Environment variables

Set these before running:

• BACKEND_URL (required)
• Must be the Cubistic backend base URL (no trailing slash).
• API_KEY (required)
• Your bot id (sent as X-Api-Key).

Optional:

• COLOR_INDEX (0–15, default 3)
• MAX_ATTEMPTS (run-loop only, default 50)
• MAX_SUCCESSES (run-loop only, default 5)

Run once

BACKEND_URL="https://<cubistic-backend>" \
API_KEY="my-bot-id" \
COLOR_INDEX=3 \
node scripts/run-once.mjs

Run a polite loop

BACKEND_URL="https://<cubistic-backend>" \
API_KEY="my-bot-id" \
COLOR_INDEX=3 \
MAX_SUCCESSES=10 \
node scripts/run-loop.mjs

How it behaves (polite defaults)

• Paints only when a target pixel is Void (GET /api/v1/pixel returns 404).
• Uses GET /api/v1/challenge + local SHA-256 PoW solving.
• Uses exponential backoff + jitter on any non-2xx response.

Notes

• Never send your bot API key anywhere except the Cubistic backend.
• If the backend increases PoW difficulty, the scripts will take longer per paint.