Paid games & fun APIs an AI agent can call with x402.
Sports Predictor · sports-predictor-api.fly.dev
Calibrated 1X2 probabilities plus derived markets (totals, BTTS, correct score) for every upcoming fixture across the big-five European leagues. Backed by a public, Brier-scored track record.
SYNTHORA · api.hergertsynthora.com
Search prediction markets ACROSS PLATFORMS (Polymarket + Kalshi) in one call: live prices, implied probability, volume, liquidity, end date and market conviction. Server-side search that actually finds the market (bitcoin, fed, election, geopolitics). For trading and forecasting agents tracking event odds. $0.05 USDC x402 Base. Input: {"input": "bitcoin"} (optional filter). Ed25519-signed.
PoketPoker · poketpoker.com
Deal one hand of Texas Hold'em against PoketPoker's bots and find out how your play compares. Five difficulty tiers; the top tier plays range-aware expected-value poker and beats every tier below it. Returns the table and a ticket; playing the hand out costs nothing more. Markdown by default, JSON with format=json.
Sociologic · rng.sociologic.ai
Generate cryptographically secure random float(s) between 0 and 1
Mechamanda · mechamanda.com
Get the top trending prediction markets on Polymarket, sorted by 24h volume. Returns up to 5 markets by default.
Agent Arcade: Reasoning Games · agent-arcade.use.x402atlas.com
Trivia Daily answer check — validates one opaque choice ID and explains correct answers from the curated record.
Agent Arcade: Reasoning Games · agent-arcade.use.x402atlas.com
Trivia Daily knowledge challenge — answer one deterministically selected and shuffled question from a curated local set.
Polymarket Intelligence API · api.polym.uk
Live Polymarket watchlist ranked by structural UMA resolution base-rate signals, with flip risk kept as a separate conditional axis.
x402-factory · x402-factory.com
All active Federal Reserve markets with live probabilities in one call — One-call board of the most active Federal Reserve prediction markets: top markets by volume with blended live probabilities, resolution dates, and per-market slugs for drill-down. The bulk read for agents tracking the state of Federal Reserve at a glance.
Brazilayer Fund Industry · api.brazilayer.com
Where Brazilian institutional money moved today: daily net flows (subscriptions minus redemptions) by fund class — fixed income, equities, multi-strategy, FX — across the entire R$ 13.8 trillion Brazilian fund industry, from official CVM filings covering ~25,000 fund classes. The emerging-market equivalent of smart-money netflow, from the regulator itself. Free sample, no payment: https://api.brazilayer.com/v1/fundos/amostra
Random Choice · random.preflightstack.com
Choose one item from a list using cryptographically secure server-side randomness. Send 2-100 choices for uniform selection, or add optional weights for weighted selection. Intended for one-off agent tie-breaking and sampling.
El Nino Market Watch · trading-perps.vercel.app
Latest ENSO index bundle from El Niño Market Watch: weekly Niño 1+2/3/3.4/4 SST anomalies (NOAA CPC), RONI, Troup SOI (BOM) and weekly IOD/DMI — recent tails with exact source URLs.
market-resolution · x402.fenixfoundry.com
Did it happen? Check whether a prediction market event has settled on Polymarket or Kalshi and get the resolved outcome, resolution time, source and market URL. A cheap oracle for agents that must verify a real-world outcome before acting.
Brazilayer Fund Industry · api.brazilayer.com
Rank and screen Brazilian investment funds from official CVM data: largest by net assets, biggest net inflows over a window, or most shareholders — filterable by class (Renda Fixa, Ações, Multimercado, Cambial). Returns fund name, manager, administrator, NAV, assets and flows. Fund screening over the whole R$ 13.8tn industry. Free sample, no payment: https://api.brazilayer.com/v1/fundos/amostra
Predictionmarketdata · api.predictionmarketdata.io
List valid PMCS taxonomy codes used to filter prediction-market searches.
Soren · soren.com
Every PC game currently free to KEEP (claim once, own permanently) across Steam, Epic Games Store, GOG and itch.io. Each entry verified against that store's own API before publication. Per-store status distinguishes "verified: nothing is free" from "could not check", so a zero is a fact rather than an absence of data. Self-verifying: the version field is a SHA-256 of the payload's own content.
Aura · api.anchor-x402.com
Read the aura of anything — color, tier (S/A/B/C/D/F), score 0-9999, description. $0.01 USDC.
Onrender · x402-trends-server.onrender.com
Get normalized sports schedules, live or recent scores, matchup status, teams, venue and a concise game brief for NBA, NFL, MLB and English Premier League (EPL). Filter by league, date and optional team name or abbreviation. Use for NBA scores, NFL games, MLB scores, EPL fixtures, today's games, schedules and AI sports research.
SYNTHORA · api.hergertsynthora.com
Historical Polymarket trade query with filters plus per-wallet aggregation. $0.01 USDC x402 Base.
Sociologic · rng.sociologic.ai
Generate a cryptographically secure random integer within a range
market-probability · x402.fenixfoundry.com
What does the market think? Ask any event question in plain English and get the implied probability from live Polymarket and Kalshi prediction markets: per-venue odds, a liquidity-weighted consensus forecast, and a cross-venue divergence flag.
prediction-trending · api.agentstools.dev
Top trending prediction events by 24-hour traded volume: a normalized list with 24h and total volume, liquidity, market count, a top-market summary, close date, status and a link-back.
ENTROPY.RIP · entropy.rip
Generate cryptographic random bytes
Per-Coin Positioning Brief · api.eucompliance.tools
Per-coin positioning brief: exchange-median spot (Binance/Coinbase/Kraken, spread disclosed), Hyperliquid funding, open interest, premium and volume, plus a disclosed positioning score (0-100, crowded long/short) and our own 6-hourly archive trend. One call per coin - BTC, ETH, SOL or any listed perp market. Signed, verifiable receipt included.