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trading-cards

A Coinbase x402 micropayment-gated API proxy for The Undesirables TCG Oracle. Allows AI agents to semantically discover and autonomously pay for physical trading card grading and Monte Carlo market intelligence using USDC on the Base network. Fully integrated with the CDP Bazaar Discovery layer.

Bayesian-calibrated scoring engine for Japan trading card arbitrage — live Mercari/Yahoo scans, trader-feedback calibration, fee-aware spread modeling. TypeScript.

Cross-border trading-card arbitrage scanner — aggregate JP/US/EU marketplace prices, surface net spreads after fees/shipping/duty/FX. TypeScript/Bun.