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Notarize AI output: a signed Ed25519 attestation of the model response plus sha256 content hash, receipt token, and Merkle anchor status for one AI inference — a cryptographic receipt for inference that lets you prove an AI said X and verify model output authenticity, checkable free by anyone, anytime.

Focused honeypot check: a live buy-then-sell simulation against real DEX liquidity (Aerodrome, Uniswap V2/V3/V4). Tells an agent whether the token can actually be SOLD, the round-trip loss percent, and whether GoPlus or honeypot.is flag it too. Catches sell-blocking scam tokens, extreme sell taxes and no-liquidity traps before a buy is placed.

List Limitless markets with filtering and sorting

Get P&L summary and realized P&L time series for a wallet

Get historical orderbook snapshots for a token

Get leaderboard for a specific market

List crypto up/down prediction markets

Get the global leaderboard of smart wallets

List Predict.Fun markets with filtering and sorting

Get leaderboard for a specific market

List Polymarket events with filtering and sorting

List Opinion markets with filtering and sorting

Fetch historical Kalshi trade data

CoinStats detailed data for a single cryptocurrency — price, market cap, supply, rank, links

CoinStats Fear & Greed Index historical chart — market sentiment over time

Crypto market sentiment check: the Fear and Greed index with yesterday's value; ?days=7 adds a daily history so you can see whether sentiment is turning

Base gas price check: the current gas price and latest block number; add ?gasLimit=150000 to also get what a transaction that size costs in ETH and USD

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Simulates keep, selective, and aggressive Branch-expansion strategies over a horizon, seeded from this API's own live routes. A simulation for exploring tradeoffs, not a forecast.

Current gas prices on Ethereum mainnet and Base — base fee, priority fee, and EIP-1559 estimates in Gwei as JSON. No API key required. Use for: gas fee check before transacting, transaction cost estimation, L1 vs L2 fee comparison, onchain timing. $0.001 USDC per call.

Top DeFi yield farming pools ranked by APY across 500+ protocols and chains — pool, protocol, chain, APY, and TVL as JSON. Filterable by chain and minimum TVL. Use for: best DeFi yields, stablecoin APY comparison, yield farming opportunities, where to earn on USDC. $0.001 USDC per call.

Top DeFi protocols ranked by total value locked (TVL) — name, category, chains, 1d/7d TVL change, and mcap/TVL ratio as JSON. Filterable by chain and category. Use for: DeFi market share, protocol comparison, TVL rankings, ecosystem research. $0.001 USDC per call.

YouTube video metadata in one call: title, channel name and id, duration, upload date, view and like counts, description, thumbnail URL, the chapter list with start and end times, and the language plus kind (manual or auto) of every available caption track. Never downloads media. Use it to check a video's length or caption availability before paying for a transcript, or to enrich a bare video link with real facts.

Get routes between two airports with historical filing data

Get routes between two airports with historical filing data