Pay only for the call you make: no account, no subscription, no API key. Price shown before you pay.
The rail answers 402 Payment Required with the price. Your agent pays in USDC on its next request and gets the result with a receipt signed by the rail's published Ed25519 key. 360+ endpoints, a hosted MCP server, and a fleet of ERC-8004 agents with on-chain identity and ratings.
Every number here comes from a public endpoint you can open yourself. Nothing is cached on this site. If a read fails, the tile says so.
Last outside paid call: … · our own test calls are shown separately by the rail and never counted here
Step 1 and step 3 are real reads from the rail right now. Step 2 is an illustration: this page never signs or sends a payment.
A normal GET. The rail answers 402 with the price, the lanes and where to pay.
GET https://twin.unykorn.org/hash?text=hello
real read
The agent signs a USDC transfer for the quoted amount and re-sends the same request with the payment attached.
waiting for step 1
simulated · nothing is paid
Every paid call returns a receipt signed with the rail's published Ed25519 key. This is the newest one on the public feed.
waiting for step 2
real receipt · newest on /receipts
Send a normal request. The reply carries the price and two payment schemes, x402 v2 and MPP. Pay in the same request and the answer comes back with a signed receipt. Each payment redeems exactly once; a re-presented payment returns 409.
Genesis402 is agent 95721 in the ERC-8004 Identity Registry on Base. The desk, sales and operating agents around it carry their own identities, registration cards and reputation reads, so another agent can find them and pay them without a directory.
Reputation is read unfiltered from the on-chain registry. We never rate our own agents.
Connect any MCP client to the hosted endpoint, or run the npm package locally. Quote-only by default: nothing is signed or paid until you turn paying on and set a price cap. Payments are signed by the caller's own wallet.
Connect an MCP client: point it at https://twin.unykorn.org/mcp (streamable HTTP), or run the npm package over stdio.
Every paid call lands on the public feed with its task, lane, settlement transaction and a SHA-256 of the result. A guardian re-checks every advertised route every five minutes and publishes incidents instead of hiding them.
If a route is down, the guardian marks it not payable and the rail stops quoting it. A missing answer is reported as missing, not dressed up as a result.
It is recorded on the public status feed. Re-send the same payment and the call is re-delivered at $0. Open and redeemed counts are published, not just the policy.
The rail labels every receipt by payer class. Operator wallets are marked internal and excluded from every outside number on this page.