Crypto Markets

Crypto market overview from Coinpaprika plus the Fear & Greed sentiment index: rankings, per-coin detail, global stats, and sentiment. Machine-payable per request.

Robinhood Chain

Offers

Offer	Endpoint	Price
Coin detail Full profile of one coin: description, links, team, tags, and development status. Append the coin id to the path, e.g. coin/btc-bitcoin.	`/m/crypto-markets/coin`	0.005 USDG
Global market stats Total crypto market cap, 24h volume, Bitcoin dominance, and number of tracked assets.	`/m/crypto-markets/global`	0.005 USDG
Fear and Greed index Crypto Fear & Greed sentiment index (0 = extreme fear, 100 = extreme greed). Pass ?limit=30 for history, default returns the current reading.	`/m/crypto-markets/sentiment`	0.005 USDG
Market tickers Price, volume, market cap, and supply for thousands of coins ranked by market cap. Pass ?limit=25, or append a coin id to the path, e.g. tickers/btc-bitcoin.	`/m/crypto-markets/tickers`	0.01 USDG

Machine-readable: openapi.json with x-payment-info offers.

Try it live

Run the full MPP flow from your browser: catch the 402, sign the payment with your wallet, and watch it settle on-chain.

Pay with an agent

Any MPP or x402-compatible client works. With mppx, payment is automatic:

// x402 exact scheme (permit2) on Robinhood Chain
// 1. GET the endpoint, read the payment-required header (base64 JSON)
// 2. Sign PermitWitnessTransferFrom against Permit2 for the advertised offer
//    (spender = x402ExactPermit2Proxy, witness.to = merchant wallet)
// 3. Retry with the payment-signature header; settlement tx arrives
//    in the payment-response header
const res = await fetch('https://api.meshgateway.co/m/crypto-markets/coin', {
  headers: { 'payment-signature': signedPaymentPayload },
})

Or inspect the challenge yourself:

curl -i https://api.meshgateway.co/m/crypto-markets/coin
# HTTP/1.1 402 Payment Required
# WWW-Authenticate: Payment id="…", method="evm", intent="charge", …