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Faremeter supports multiple blockchain networks and assets. The @faremeter/info package provides lookup utilities for network configuration and asset details.

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Supported networks

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Solana

NetworkIdentifierStatus
DevnetdevnetSupported
TestnettestnetSupported
Mainnet Betamainnet-betaSupported

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EVM

NetworkIdentifierChain IDStatus
Basebase8453Supported
Base Sepoliabase-sepolia84532Supported
SKALE Europa Testnetskale-europa-testnet1444673419Supported
Polygon PoSeip155:137137Supported (CAIP-2)
Polygon Amoyeip155:8000280002Supported (CAIP-2)
Monadeip155:143143Supported (CAIP-2)
Monad Testneteip155:1014310143Supported (CAIP-2)
EVM networks support CAIP-2 format identifiers. Networks like Base Sepolia and Base have short aliases (base-sepolia, base). Others use the full CAIP-2 format (eip155:<chainId>).

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Supported assets

AssetSolanaEVM
USDCDevnet, MainnetBase, Base Sepolia, SKALE, Polygon PoS, Polygon Amoy, Monad, Monad Testnet
PYUSDDevnet, Mainnet—
USDTMainnet—
USDGDevnet, Mainnet—
USD1Mainnet—
USXMainnet—
CASHMainnet—
EURCDevnet, Mainnet—
JupUSDMainnet—
USDSMainnet—
USDtbMainnet—
USDuMainnet—
USDGOMainnet—
FDUSDMainnet—
SOLDevnet, Testnet, Mainnet—

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Using @faremeter/info

The info package provides helpers to construct payment requirements with correct network and asset details.

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Solana

import { x402Exact } from "@faremeter/info/solana"

const requirements = x402Exact({
  network: "devnet",
  payTo: "7xKXwxRPMo2sUAT5...",
  asset: "USDC",
  amount: "10000",
})

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EVM

import { x402Exact } from "@faremeter/info/evm"

const requirements = x402Exact({
  network: "base-sepolia",
  asset: "USDC",
  amount: "10000",
  payTo: "0x1234...",
})

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Network aliases

The info package resolves network aliases to canonical identifiers. For example, "devnet" resolves to the correct Solana devnet RPC endpoint, and "base-sepolia" resolves to the correct EVM chain ID and RPC.

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Configuring custom networks

When using the lower-level packages (@faremeter/fetch, @faremeter/payment-*), you can pass custom network configuration directly to wallet and handler factory functions. See the API Reference for the full configuration options.

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Further reading