Paid HTTP for AI agents, over x402 v2 and MPP. An unpaid request gets an HTTP 402 with the price. The agent pays in stablecoin, retries, and gets the result with a signed receipt. No accounts, no API keys, no card network.
The Genesis402 rail at twin.unykorn.org sells single calls to software agents: wallet, token and contract risk snapshots, DeFi and market data, SEC financials, web and domain lookups, AI text tools, and multi-chain reads. Prices start at $0.001 and are shown before anything is paid.
Every unpaid call returns both an x402 v2 challenge and an MPP (Machine Payments Protocol) challenge, so either kind of agent wallet can pay.
USDC on Base, Polygon and Solana; XRP on XRPL; USDC on Stellar.
The rail publishes an ERC-8004 agent identity: agent 95721 on Base, with a machine-readable agent card.
Every paid call gets a signed receipt on a public feed. If a paid call is not delivered, the payer's next call is free, automatically.
curl -i https://twin.unykorn.org/wallet-ops # HTTP/1.1 402 Payment Required → x402 + MPP challenges, $0.25
Specialist endpoints on UnyKorn network sites: fraud screening and NIL33, the athlete network. Challenge live; settlement being switched on.
Address screen: OFAC sanctions list, the Blockchain Fraud registry and format checks. Deterministic JSON.
Signed Know Your Athlete assertion (ES256 JWS), no throttle.
Contract Shield: red-flag scan of pasted contract text. Pattern check, not legal review.
NIL33 assistant answer with citations, no throttle.
NIL33 account record from the ledger.
curl -i https://nil33.com/api/x402/verify/TEST # HTTP/1.1 402 Payment Required → x402 v2 payment requirements (USDC on Base)
Machine-readable manifests: nil33.com/.well-known/x402.json · blockchainfraud.org/.well-known/x402.json
genesis402-mcp connects any MCP client (Claude Desktop, Cursor and others) to the Genesis402 rail: 360 pay-per-call endpoints through 14 tools. That covers DeFi and market data, SEC financials, wallet and token risk signals, web and domain lookups, AI text tools, and multi-chain reads across EVM, Solana, Bitcoin, Stellar and XRPL. Prices start at $0.001 per call. Listed in the official MCP Registry as io.github.FTHTrading/genesis402-mcp.
Quote-only by default. Out of the box it shows prices and never spends. Paying needs GENESIS402_LIVE=1, a dedicated payer key and a per-call cap (GENESIS402_MAX_USD, default $0.25).
{
"mcpServers": {
"genesis402": { "command": "npx", "args": ["-y", "genesis402-mcp"] }
}
}
https://twin.unykorn.org/mcp
Holds no keys; a paid tool returns the exact x402 quote for you to sign. Health: /mcp/health
402 Payment Required with what it accepts: asset, network, amount and pay-to address. x402 reads it from the PAYMENT-REQUIRED header; MPP clients read WWW-Authenticate.X-PAYMENT header.They settle in seconds, for fractions of a cent, with no chargebacks. That makes a $0.001 call worth selling. The rail takes USDC on Base, Polygon, Solana and Stellar, and XRP on XRPL.