Games & Fun APIs

Flip a coin for a small USDC payment on Base mainnet. Returns heads or tails.

Pay a tiny amount of USDC and receive one delightfully useless fact.

Get a random fortune via x402 payment on Base mainnet.

Roll a dice with any number of faces. Specify faces via ?faces=N query parameter.

Generate a captioned meme image. Pay per request in USDC on Base mainnet.

Pay a micro-fee in USDC on Base mainnet to receive a riddle and its answer.

Returns a single random fact as JSON in exchange for a micropayment.

Get a random interesting joke. Secured with x402 payment protocol on Base mainnet.

Otto AI · PM Crypto

x402.ottoai.services

Crypto prediction markets on Polymarket: the highest-volume open BTC, ETH and crypto markets with live odds (outcome probabilities), best bid/ask, spread, 24h + total volume, liquidity, price change and end date. "Bitcoin above X", price targets, ETF and protocol events — what the prediction market ACTUALLY prices in, as flat JSON refreshed every 5 minutes. Crypto odds, Bitcoin prediction market, ETH probability. $0.001 per call.

Random · Random

agent402.tools

Cryptographically secure randomness. ?bytes=1..1024 returns hex; or ?min=&max= returns a uniform integer; ?count=1..100.

Live probability: Which party wins the next US presidential election? — Stable evergreen URL for a recurring question: Which party wins the next US presidential election? Auto-resolves to the current market instance and rolls forward on resolution, so the answer is always about the next occurrence. Response adds current_slug and rolls_to_next_at to the standard probability shape.

Roll · Roll

api.anchor-x402.com

Verifiable RNG — cryptographically-random integer(s) signed by the treasury key. Drop-in VRF for game studios. $0.001 USDC.

Locus public pay-per-use API

Cryptographically-secure randomness with a receipt. GET ?bytes= returns hex (1-256 bytes); add ?min=&max= for a uniform integer in an inclusive range. Each response carries a request_id and timestamp — unbiased entropy an agent can cite to a counterparty, not a seeded PRNG. Need provable fairness over time? /rand/commit does commit-reveal (commitment now, value later).

Truth Bear · Gauge Esgfund Region

api.truthbear.co

[3-LEG] ESG fund greenwash chain, one fund (?entity=blackrock-art9-downgrade): leading label pressure, SFDR Article 9 to 8 downgrade and ESG name removal -> current current classification -> realized rating de-listing and lifecycle (confirmation gate). A chain, not one reading: confidence = how many legs are lit, in order. Sources: SFDR filings and rating registries. Descriptive only, never a forecast or advice. No data -> 422 no_charge, not billed. $0.25 per call.

Otto AI · PM Markets

x402.ottoai.services

Top Polymarket prediction markets RIGHT NOW: the 25 highest-volume open markets with live odds (outcome probabilities), best bid/ask, spread, last trade price, 24h + total volume, liquidity, 1d/7d price change, end date and event link. Flat JSON, refreshed every 5 minutes. Prediction market odds, Polymarket data, event probabilities, market sentiment. $0.001 per call.

Top Polymarket prediction markets by 24h volume. Returns up to 50 markets with id, question, slug, volume, volume24hr, liquidity, endDate, outcomes and outcomePrices.

Official Source Evidence · GTM Form D Funding Leads

evidence.regulavita.com

Find newly filed SEC Form D private-offering signals for autonomous GTM workflows. Filter by issuer state, industry keyword, and reported amount sold. Returns official links, company context, related people, and a cursor. Form D is a notice, not proof of total funding raised.

gauge/esgfund-region · Gauge Esgfund Region

aeml-x402.zeabur.app

[3-LEG] ESG fund greenwash chain, one fund (?entity=blackrock-art9-downgrade): leading label pressure, SFDR Article 9 to 8 downgrade and ESG name removal -> current current classification -> realized rating de-listing and lifecycle (confirmation gate). A sequential chain, not one reading - confidence = how many legs are lit, in order. Sources: SFDR filings and rating registries. Descriptive only, never a forecast or advice. No data -> 422 no_charge, not billed.

UMA resolution dispute and flip base rates by category and criterion clarity; descriptive historical compatibility, not a market-specific forecast. BEFORE YOU PAY: free substitute https://dash.polym.uk/uma-base-rates.json and https://dash.polym.uk/uma-flip-rate.json. THIS ADDS: The two artifacts joined into one response, dispute axis and flip axis already aligned by category. The underlying numbers are the same ones in those two free files.

Premium AI joke generation

Twenty-Four daily math puzzle — four numbers to combine into exactly 24; deterministic solvable UTC daily challenge for agent reasoning benchmarks.

Search, filter, and sort prediction markets across exchanges.

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.