Network & token support

Overview

AnySpend x402 supports payments across multiple blockchain networks including EVM-compatible chains and Solana (SVM). This page provides the complete reference of supported networks, tokens, and their contract addresses.

EVM mainnet networks

AnySpend x402 supports the following EVM mainnet chains:

Network	Identifier	Chain ID	Type
Abstract	abstract	2741	L2
Arbitrum One	arbitrum	42161	L2 - Optimistic Rollup
Avalanche C-Chain	avalanche	43114	L1
B3	b3	8333	L2
Base	base	8453	L2 - Optimistic Rollup
BNB Smart Chain	bsc	56	L1
Ethereum	ethereum	1	L1
IoTeX	iotex	4689	L1
Optimism	optimism	10	L2 - Optimistic Rollup
Peaq	peaq	3338	L1
Polygon PoS	polygon	137	Sidechain
Sei	sei	1329	L1

EVM testnet networks

For development and testing, AnySpend supports these testnets:

Network	Identifier	Chain ID	Faucet
Abstract Testnet	abstract-testnet	11124	Abstract Faucet
Avalanche Fuji	avalanche-fuji	43113	Fuji Faucet
Base Sepolia	base-sepolia	84532	Coinbase Faucet
Polygon Amoy	polygon-amoy	80002	Polygon Faucet
Sei Testnet	sei-testnet	1328	Sei Faucet

SVM networks (Solana)

AnySpend also supports Solana Virtual Machine (SVM) networks:

Network	Identifier	Chain ID	Type
Solana Mainnet	solana	101	Mainnet
Solana Devnet	solana-devnet	103	Testnet

Token compatibility

Rather than maintaining a static list of supported tokens, we've built tools to help you verify any token's compatibility in real-time.

X402 token compatibility checker

For a token to be compatible with X402, it must implement either:

• EIP-3009 (transferWithAuthorization) - Used by USDC
• EIP-2612 (permit) - Used by USDT (on some chains) and many other modern ERC-20 tokens

Using the public checker

Check any ERC-20 token on AnySpend-supported chains:

Web interface: anyspend.com/x402-tokens

Simply enter a token address and select the network to instantly verify X402 compatibility.

Direct API: You can also query the API directly:

bash
curl https://tokens.anyspend.com/metadata/base/0xb3b32f9f8827d4634fe7d973fa1034ec9fddb3b3

This returns the token metadata and compatibility information in JSON format.

Using the npm package

For developers integrating token compatibility checks into their applications:

npm package: @b3dotfun/anyspend-x402-token-compat

bash
npm install @b3dotfun/anyspend-x402-token-compat

Usage:

typescript
import { TokenCompatClient } from '@b3dotfun/anyspend-x402-token-compat';

const client = new TokenCompatClient();

// Get token metadata and compatibility
const metadata = await client.getTokenMetadata('base', '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913');
console.log(metadata.supportsEip2612); // true - supports permit
console.log(metadata.supportsEip3009); // true - supports transferWithAuth

// Quick compatibility check
const hasPermit = await client.supportsEip2612('base', tokenAddress);

How it works

Supported Cross-Chain Routes: AnySpend supports cross-chain routing between any of the supported EVM networks, including:

• Ethereum ↔ Base, Arbitrum, Optimism, Polygon, Avalanche
• Base ↔ Arbitrum, Optimism, Polygon
• L1 ↔ L2 bridging across all supported chains
• Cross-VM: Solana ↔ EVM chains (experimental)

The checker combines real-time on-chain verification with a growing database of verified tokens:

• Millisecond-level response times through smart caching
• Database grows automatically as more tokens are checked
• On-chain verification for uncached tokens
• Runs on Cloudflare Workers for low-latency worldwide access

Integration in x402

The token compatibility checker is already integrated into the AnySpend X402 SDK:

• Validates token compatibility upfront before payment
• Returns clear, actionable errors for unsupported tokens
• Prevents failed transactions due to incompatible tokens

Try it live: https://x402-demo.anyspend.com/

Additional resources

What's next

Getting help

If you need a specific token or network supported:

• Discord: Request in #anyspend-support
• GitHub: Open an issue at github.com/b3-fun/anyspend-x402
• Email: support@b3.fun