Introduction
Solvador is an x402 payment facilitator that verifies and settles stablecoin payments on 14 networks — so your server never touches gas or keys.
Solvador is a hosted x402 payment facilitator. Point your resource server at https://api.solvador.com, drop in an API key, and settle stablecoin payments on mainnet — on Base, Arbitrum, Optimism, Polygon, Avalanche, Celo, Linea, Unichain, World Chain, Monad, Robinhood Chain, Solana, NEAR, and the XRP Ledger, including the chains other facilitators don’t reach.
How x402 works in 60 seconds
x402 is an open standard for HTTP-native payments, built around the 402 Payment Required status code:
- A client requests a paid resource from your server.
- Your server responds with
402 Payment Requiredand a list of payment requirements (network, asset, amount, recipient). - The client signs a payment payload matching one of those requirements and retries the request.
- Your server forwards the payload to a facilitator to
/verifyit, serves the resource, then calls/settleto execute the payment on-chain.
Solvador is the facilitator leg of that flow: it checks signatures, balances, amounts, and timing, then submits the transaction on-chain and returns the result. See the x402 specification for full protocol details.
Why a hosted facilitator
Settling payments yourself means holding private keys, funding gas on every chain you accept, and running RPC infrastructure. With Solvador your server stays gasless: it never holds a key, never funds gas, and never submits a transaction. You get one API across 14 networks and three payment schemes.
What you get
POST /verify— free payment verification, no authentication required.POST /settle— on-chain settlement, authenticated with your API key.- 14 mainnet networks — 11 EVM chains plus Solana, NEAR, and the XRP Ledger.
- Three payment schemes —
exact,upto, andbatch-settlement. - Protocol extensions — Bazaar resource discovery, settle idempotency, and gasless approvals.
- A dashboard — settlement history, metrics, API keys, and billing at dashboard.solvador.com.
Next steps
Quickstart
Accept your first x402 payment through Solvador in five minutes.
Supported Networks
Every chain and asset Solvador settles on.
Payment Schemes
Fixed-price, metered, and high-frequency payment models.
API Reference
Endpoints, request and response shapes, and error handling.
Solvador on the web: solvador.com · dashboard.solvador.com · blog.solvador.com · Discord