Crypto

Prices, gas, fees, DeFi, contracts & on-chain data. 46 pay-per-call crypto endpoints for AI agents — keyless, USDC via x402.

WATCHERS Don't poll — get woken up

Arm a paid watcher on crypto and we push a signed callback the moment it happens — no polling loop. All watchers →

Crypto address activity $0.05get a signed callback the moment a crypto address transacts. Token price $0.05get a signed callback when a crypto asset crosses a price you set. Gas price $0.05get a signed callback when EVM gas crosses a level you set — e.g. Funding rate $0.05get a signed callback when a Hyperliquid perpetual's hourly funding rate crosses a level (e.g. Fear greed $0.05get a signed callback when the Crypto Fear & Greed index crosses a level (e.g.

crypto.address-history$0.0014

Transaction history for an Ethereum address (via Etherscan V2).

GET /api/crypto/address-history

crypto.address-safety$0.0020

Malicious-wallet screen (via GoPlus, free/keyless).

GET /api/crypto/address-safety

crypto.address-screen$0.0020

Sanctions-screen a crypto wallet address against the US Treasury OFAC SDN list's published Digital Currency Addresses (BTC/ETH/USDT/XMR and more).

GET /api/crypto/address-screen

crypto.address-validate$0.0010

Validate a cryptocurrency address with full checksum verification (not just regex).

GET /api/crypto/address-validate

crypto.balances$0.0014

Live native + ERC-20 token balances for an EVM address (Base, Ethereum, Polygon, Arbitrum, Optimism; keyless).

GET /api/crypto/balances

crypto.btc-address$0.0014

Bitcoin address summary (free/keyless): confirmed balance (sats + BTC), total received/sent, transaction count, funded/spent output counts, and pending mempool

GET /api/crypto/btc-address

crypto.btc-fees$0.0010

Current Bitcoin network fee rates and mempool backlog from mempool.space.

GET /api/crypto/btc-fees

crypto.btc-mempool$0.0014

Bitcoin mempool state (free/keyless): current unconfirmed tx count, total vsize, and total fees, plus the most recent transactions (whale radar) — filter with m

GET /api/crypto/btc-mempool

crypto.btc-tx$0.0014

Bitcoin transaction lookup by txid (free/keyless): confirmed status + confirmation count (vs current tip), block height + time, fee (sats + BTC), total output v

GET /api/crypto/btc-tx

crypto.btc-utxos$0.0014

Unspent transaction outputs (UTXOs) for a Bitcoin address (free/keyless): each with txid, output index, value (sats + BTC), confirmation status, and block heigh

GET /api/crypto/btc-utxos

crypto.cex-klines$0.0014

Centralized-exchange OHLCV candlesticks for a spot trading pair (e.g.

GET /api/crypto/cex-klines

crypto.cex-ticker$0.0014

Centralized-exchange 24h ticker for a spot pair (e.g.

GET /api/crypto/cex-ticker

crypto.chain-tvl-history$0.0014

Historical total DeFi TVL time series for a blockchain (e.g.

GET /api/crypto/chain-tvl-history

crypto.coin$0.0014

Full coin profile by CoinGecko id (e.g.

GET /api/crypto/coin

crypto.coin-history$0.0014

Historical market chart for a coin by CoinGecko id: time-series of price, market cap, and volume over the last N days (1-365) in USD or another vs-currency.

GET /api/crypto/coin-history

crypto.contract$0.0018

Decode an EVM smart contract.

GET /api/crypto/contract

crypto.decode-calldata$0.0010

Decode raw EVM transaction calldata.

POST /api/crypto/decode-calldata

crypto.defi$0.0018

DeFi total-value-locked (TVL) metrics via DefiLlama.

GET /api/crypto/defi

crypto.defi-chains$0.0014

DeFi TVL leaderboard across all chains (via DefiLlama, free/keyless): every chain ranked by total value locked, with its native token symbol and chain id.

GET /api/crypto/defi-chains

crypto.defi-fees$0.0014

Protocol fees/revenue or DEX trading volume leaderboards (via DefiLlama, free/keyless).

GET /api/crypto/defi-fees

crypto.defi-protocol-history$0.0014

Historical total-value-locked (TVL) time series for a DeFi protocol by slug (e.g.

GET /api/crypto/defi-protocol-history

crypto.defi-yields$0.0014

DeFi yield & lending rates across protocols (via DefiLlama, free/keyless).

GET /api/crypto/defi-yields

crypto.dex-networks$0.0014

List the 100+ blockchain networks supported by the on-chain DEX endpoints (via GeckoTerminal, free/keyless).

GET /api/crypto/dex-networks

crypto.dex-ohlcv$0.0014

OHLCV candlesticks for a DEX pool (via GeckoTerminal, free/keyless).

GET /api/crypto/dex-ohlcv

crypto.dex-pools$0.0014

GET /api/crypto/dex-pools

crypto.dex-search$0.0014

Search on-chain DEX liquidity pools by token name, symbol, or address (via GeckoTerminal, free/keyless).

GET /api/crypto/dex-search

crypto.dex-token-pools$0.0014

All DEX pools trading a given token, by contract address (via GeckoTerminal, free/keyless).

GET /api/crypto/dex-token-pools

crypto.ens-resolve$0.0010

Resolve ENS (Ethereum Name Service) names and addresses live on Ethereum mainnet.

GET /api/crypto/ens-resolve

crypto.fear-greed$0.0012

The Crypto Fear & Greed Index — a 0–100 market-sentiment gauge (0 = Extreme Fear, 100 = Extreme Greed) updated daily.

GET /api/crypto/fear-greed

crypto.gas-oracle$0.0010

Live EVM gas oracle.

GET /api/crypto/gas-oracle

crypto.global$0.0012

Whole-crypto-market overview: total market cap (USD), total 24h volume, 24h market-cap % change, Bitcoin + Ethereum dominance, count of active cryptocurrencies

GET /api/crypto/global

crypto.hyperliquid-funding$0.0014

Live perp funding rates, open interest, and mark/oracle/mid prices across 200+ Hyperliquid perpetuals (free/keyless).

GET /api/crypto/hyperliquid-funding

crypto.hyperliquid-predicted-funding$0.0014

Predicted next funding rates per coin across venues (Hyperliquid + Binance/Bybit perps), free/keyless.

GET /api/crypto/hyperliquid-predicted-funding

crypto.kimchi-premium$0.0048

The "kimchi premium" — how much higher a crypto asset trades on Korean exchanges (Upbit, KRW) than its global USD price, as a percent.

GET /api/crypto/kimchi-premium

crypto.markets$0.0014

Top cryptocurrencies by market cap with live price, market cap, 24h volume, and 24h + 7d % change.

GET /api/crypto/markets

crypto.nft$0.0014

Live ERC-721 NFT read (Base, Ethereum, Polygon, Arbitrum, Optimism; keyless).

GET /api/crypto/nft

crypto.nft-security$0.0014

NFT collection risk screening via GoPlus (free, keyless).

GET /api/crypto/nft-security

crypto.stablecoins$0.0014

Stablecoin supply leaderboard (via DefiLlama, free/keyless): the largest stablecoins by circulating USD, with peg type (USD/EUR/…), peg mechanism (fiat-backed,

GET /api/crypto/stablecoins

crypto.token-info$0.0014

On-chain token metrics by contract address (via GeckoTerminal, free/keyless): name, symbol, decimals, on-chain USD price, FDV, market cap, total reserve in USD,

GET /api/crypto/token-info

crypto.token-metadata$0.0014

Live on-chain token metadata for an ERC-20 or ERC-721 contract (Base, Ethereum, Polygon, Arbitrum, Optimism; keyless).

GET /api/crypto/token-metadata

crypto.token-price$0.0012

Current spot price and market data for crypto assets.

GET /api/crypto/token-price

crypto.token-safety$0.0020

Token honeypot & rug-pull risk screen (via GoPlus, free/keyless).

GET /api/crypto/token-safety

crypto.token-transfers$0.0014

ERC-20 token transfer history for an Ethereum address (via Etherscan V2).

GET /api/crypto/token-transfers

crypto.trending$0.0012

The most-searched trending cryptocurrencies on CoinGecko right now (last 24h), each with symbol, name, market-cap rank, and price.

GET /api/crypto/trending

crypto.tx$0.0010

Live EVM transaction status and receipt lookup.

GET /api/crypto/tx

crypto.vrf$0.0010

Verifiable random function — deterministic, publicly verifiable randomness bound to your seed and signed by the 2s key.

GET /api/crypto/vrf

Discovery

/api/directory — full catalog of every endpoint
/openapi.json — OpenAPI 3.1 spec
/llms.txt — plain-text manifest for LLM ingestion