# Services from oracle.the-undesirables.com on Zero > oracle.the-undesirables.com serves 17 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero. Canonical page: https://www.zero.xyz/host/oracle.the-undesirables.com Live health (JSON, refreshed every minute): https://www.zero.xyz/host/oracle.the-undesirables.com/health.json ## Services - [Grade-or-Not Trading Card ROI Decision Engine](https://www.zero.xyz/c/grade-or-not-trading-card-roi-decision-engine-26d47397/llms.txt): $0.1/call via x402. Calculates expected ROI for grading a trading card by combining AI grade prediction with PSA fee schedules and graded market values, returning a GO/NO-GO verdict with best-case, predicted, and worst-case profit scenarios. - [Phygital Trading Card Arbitrage Screener (Courtyard.io vs TCGPlayer)](https://www.zero.xyz/c/phygital-trading-card-arbitrage-screener-courtyard-io-vs-tcgplayer-f5120446/llms.txt): $0.1/call via x402. Cross-references Courtyard.io tokenized card listings on Polygon against TCGPlayer raw prices to surface buy/sell arbitrage opportunities across 267K+ vaulted cards. - [Stochastic Monte Carlo Price Simulator (Heston/Merton/Kou) for TCG Cards & Tokenized Assets](https://www.zero.xyz/c/oracle-the-undesirables-com-b4836b78/llms.txt): $0.015/call via x402. Runs Monte Carlo price simulations using Heston, Merton, or Kou stochastic models to project future price trajectories and percentile distributions for tokenized real-world assets and physical trading cards. - [TCGCSV Daily Market Snapshot](https://www.zero.xyz/c/tcgcsv-daily-market-snapshot-899bb38b/llms.txt): $0.025/call via x402. Returns a daily snapshot of TCG card market data including top movers, price changes, and volume trends across up to 13 supported trading card games. - [Oracle TCG Trending Cards Feed](https://www.zero.xyz/c/oracle-tcg-trending-cards-feed-3c65684f/llms.txt): $0.025/call via x402. Returns the top trading cards ranked by market activity (30-day sales volume, views, price velocity) across up to 25 supported TCG games - [The Undesirables Oracle: Card Verdict Endpoint](https://www.zero.xyz/c/the-undesirables-oracle-card-verdict-endpoint-7e2b5d10/llms.txt): $0.3/call via x402. Returns a comprehensive, all-in-one trading card market decision package: live comps, 30-day calibrated price forecast, grade-ROI analysis, and a deterministic MARKET STANCE grade. - [Trading Card Portfolio Optimizer (Markowitz Mean-Variance)](https://www.zero.xyz/c/trading-card-portfolio-optimizer-markowitz-mean-variance-83145308/llms.txt): $0.5/call via x402. Optimizes a trading card portfolio using Markowitz mean-variance analysis over conformal-calibrated risk forecasts, returning optimal position sizing, allocation weights, Sharpe ratios, and rebalancing recommendations. - [The Undesirables Oracle — TCG Card Grade Upload](https://www.zero.xyz/c/the-undesirables-oracle-tcg-card-grade-upload-c369c07b/llms.txt): $0.1/call via x402. Grades a physical trading card image using AI vision, returning a numeric grade and detailed condition report with privacy guarantees - [Shroomy Web3 Oracle – NFT/Crypto Floor Price Forecaster](https://www.zero.xyz/c/oracle-the-undesirables-com-7b5f4f3f/llms.txt): $0.05/call via x402. Fetches real-time NFT or crypto floor prices via Alchemy and runs 20,000-iteration Heston stochastic Monte Carlo simulations to produce probabilistic price forecasts across user-specified time horizons. - [The Undesirables Oracle — Graded Slab Census](https://www.zero.xyz/c/the-undesirables-oracle-graded-slab-census-221f1dfe/llms.txt): $0.05/call via x402. Returns a cert-verified, grade-by-grade count of actively listed PSA/BGS/CGC/TAG slabs on the open market for a specific trading card, with 30-day active counts and median ask prices. - [The Undesirables Oracle — TCG Card Lending Terms](https://www.zero.xyz/c/the-undesirables-oracle-tcg-card-lending-terms-3f49ca69/llms.txt): $0.1/call via x402. Returns calibrated per-card lending terms including maximum LTV, liquidation price, and liquidity tier for trading card collateral based on tail-risk analysis - [Historical Token Monte Carlo Simulator (Heston Model)](https://www.zero.xyz/c/oracle-the-undesirables-com-b11a3ebf/llms.txt): $0.05/call via x402. Fetches historical OHLC data from CoinGecko for a given token and runs a Monte Carlo Heston stochastic volatility simulation to project future price trajectories with percentile forecasts. - [Trading Card Batch Triage (GET)](https://www.zero.xyz/c/trading-card-batch-triage-get-3bc259b2/llms.txt): $0.5/call via x402. Accepts up to 20 comma-separated card image URLs and returns an AI-graded, profit-ranked triage showing expected ROI from professional grading for each card. - [Cross-Platform Prediction Market Arbitrage Scanner (Polymarket vs Kalshi)](https://www.zero.xyz/c/oracle-the-undesirables-com-b670f476/llms.txt): $1/call via x402. Scans for price discrepancies between Polymarket and Kalshi prediction markets using Gen3 NLI to identify cross-platform arbitrage opportunities. - [Basket Arbitrage Scanner (NO-Outcome Multi-Market)](https://www.zero.xyz/c/oracle-the-undesirables-com-b2675a09/llms.txt): $0.5/call via x402. Scans prediction markets for basket arbitrage opportunities where buying all NO outcomes across a multi-outcome event guarantees profit. - [TCG Card Grading AI (PSA/Beckett Grade Predictor)](https://www.zero.xyz/c/oracle-the-undesirables-com-506c4b8b/llms.txt): $0.1/call via x402. Uses AI vision to analyze images of physical Trading Card Game (TCG) cards and predict their PSA and Beckett grades. - [Weather Edge Scanner: NWS Forecast vs Kalshi Temperature Derivatives](https://www.zero.xyz/c/oracle-the-undesirables-com-387874cf/llms.txt): $0.25/call via x402. Scans for arbitrage opportunities between National Weather Service temperature forecasts and Kalshi weather derivative markets Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently. - [Zero catalog index](https://www.zero.xyz/llms.txt)