Supported Networks
14 mainnet networks — 11 EVM chains plus Solana, NEAR, and the XRP Ledger.
Solvador settles on 14 mainnet networks. Networks are addressed by their CAIP-2 identifier in payment requirements and API responses.
| Network | CAIP-2 ID | Default asset | Schemes |
|---|---|---|---|
| Base | eip155:8453 | USDC | exact, upto, batch-settlement |
| Arbitrum One | eip155:42161 | USDC | exact, upto, batch-settlement |
| Optimism (OP Mainnet) | eip155:10 | USDC | exact, upto, batch-settlement |
| Polygon PoS | eip155:137 | USDC | exact, upto, batch-settlement |
| Avalanche C-Chain | eip155:43114 | USDC | exact, upto, batch-settlement |
| Celo | eip155:42220 | USDC | exact, upto, batch-settlement |
| Linea | eip155:59144 | USDC | exact, upto, batch-settlement |
| Unichain | eip155:130 | USDC | exact, upto, batch-settlement |
| World Chain | eip155:480 | USDC | exact, upto, batch-settlement |
| Monad | eip155:143 | USDC | exact, upto, batch-settlement |
| Robinhood Chain | eip155:4663 | USDG | exact, upto, batch-settlement |
| Solana | solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp | USDC | exact |
| NEAR | near:mainnet | USDC (NEP-141) | exact |
| XRP Ledger | xrpl:0 | XRP / RLUSD | exact |
EVM networks
All 11 EVM networks are addressed as eip155:<chainId>. USDC payments settle via ERC-3009 transferWithAuthorization — the payer signs off-chain and Solvador submits on-chain, so neither the payer nor your server spends gas. Smart-wallet payers are supported too: deployed wallets verify via ERC-1271, and counterfactual (not-yet-deployed) wallets via ERC-6492 signatures. See exact for details.
Robinhood Chain and USDG
Robinhood Chain’s default stablecoin is USDG (Global Dollar, 0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168, 6 decimals). USDG supports neither EIP-3009 nor EIP-2612, so exact runs through Permit2: the payer makes a one-time on-chain approval to the canonical Permit2 contract, then signs off-chain like on every other chain.
Solana
Standard x402 exact payments on SVM, settled in USDC. Payment payloads are constructed by any x402 Solana client; Solvador verifies and submits them.
NEAR
exact on NEAR uses relayer-sponsored NEP-366 delegate actions: the payer signs a delegate action, and Solvador’s relayer wraps it in an outer transaction and pays the NEAR gas. Payers need no NEAR balance for gas.
XRP Ledger
XRPL uses a keyless model: the payer signs the complete transaction — which carries its own (sub-cent) network fee — and Solvador verifies it by simulation, then submits it. A settlement succeeds only when the transaction is validated on-ledger with tesSUCCESS.
XRPL settlements are unlimited on every plan — they never count against your monthly quota. See Plans & Quotas.
Live source of truth
The machine-readable list of every supported (scheme, network) pair is served at GET /supported. Prefer querying it over hardcoding network lists — new networks appear there first.