canary — x402 connectivity probe

Send 3–5 words, get one English sentence back. $0.001 per call, settled in crypto on Base Sepolia.

Endpoints

• GET /api/health — public status and price, no payment needed.
• POST /api/canary — empty body returns 402 payment_required; a paid body returns the sentence.

Status

This is a plumbing probe on the way to full x402 endpoints. Payment rail: USDC on Base Sepolia. No account, no email, no tracking.