Supported Networks

The network registry contains 21 networks. 11 are enabled for payments (10 EVM + Solana) and 13 have x402r escrow support.

EM payment availability: USDC and USDG live; EURC, PYUSD, AUSD and USDT coming soon. The token tables below describe the configured registry, not live EM settlement support.

Network Summary

Network	Chain ID	Enabled tokens	Escrow	Operator	Enabled
Base	8453	USDC	Yes	0x271f9fa7f8907aCf178CCFB470076D9129D8F0Eb	Yes
Ethereum	1	USDC	Yes	0x69B67962ffb7c5C7078ff348a87DF604dfA8001b	Yes
Polygon	137	USDC	Yes	0xB87F1ECC85f074e50df3DD16A1F40e4e1EC4102e	Yes
Arbitrum	42161	USDC	Yes	0xC2377a9Db1de2520BD6b2756eD012f4E82F7938e	Yes
Celo	42220	USDC	Yes	0xC2377a9Db1de2520BD6b2756eD012f4E82F7938e	Yes
Monad	143	USDC	Yes	0x9620Dbe2BB549E1d080Dc8e7982623A9e1Df8cC3	Yes
Avalanche	43114	USDC	Yes	0xC2377a9Db1de2520BD6b2756eD012f4E82F7938e	Yes
Optimism	10	USDC	Yes	0xC2377a9Db1de2520BD6b2756eD012f4E82F7938e	Yes
SKALE	1187947933	USDC	Yes	0x43E46d4587fCCc382285C52012227555ed78D183	Retired
Solana	— (SVM)	USDC	No	—	Yes
NEAR	— (NEAR)	USDC	No	—	No (configured, not enabled)
HyperEVM	999	USDC	No	—	No (configured, not enabled)
Unichain	130	USDC	No	—	No (configured, not enabled)
Scroll	534352	USDC	No	—	No (configured, not enabled)
Arc	5042	USDC	Yes	0x0258472A1410Ac3Ad720f1BC83f22B3c0af1Fd9D	Yes
Robinhood	4663	USDG	Yes	0x0258472A1410Ac3Ad720f1BC83f22B3c0af1Fd9D	Yes
Robinhood Testnet (testnet)	46630	None	No	—	No (testnet)
Base Sepolia (testnet)	84532	USDC	Yes	—	No (testnet)
Ethereum Sepolia (testnet)	11155111	USDC	Yes	—	No (testnet)
Polygon Amoy (testnet)	80002	USDC	No	—	No (testnet)
Arbitrum Sepolia (testnet)	421614	USDC	No	—	No (testnet)

Solana: direct SPL transfers, no escrow (Fase 1). No PaymentOperator, no on-chain escrow contract.

Retired: SKALE. A retired network accepts no new tasks, listings or orders — publishing on it returns 400. It keeps settling work already in flight, and its addresses stay published below on purpose: payers of expired escrows need them to call reclaim() themselves, and historical payments still build their explorer links from them.

SKALE: DX402 evidence anchoring is impossible on skale (the Facilitator's DX402 Network enum refuses it: 422), so 0 of 15 paid submissions carried evidence, against 19/20 on monad. Its pre-Cancun EVM also breaks escrow and makes EIP-7702 — and therefore rater-authored reputation — impossible.

Configured Token & Contract Addresses

The catalog preserves disabled assets for future rails and historical orders. Only tokens marked enabled accept new payments.

Base

Token	Address	Enabled for new payments
USDC	0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913	Yes
EURC	0x60a3E35Cc302bFA44Cb288Bc5a4F316Fdb1adb42	No

Contract	Address
AuthCaptureEscrow	0xb9488351E48b23D798f24e8174514F28B741Eb4f
OperatorFactory	0x3D0837fF8Ea36F417261577b9BA568400A840260
EM PaymentOperator	0x271f9fa7f8907aCf178CCFB470076D9129D8F0Eb

Ethereum

Token	Address	Enabled for new payments
USDC	0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48	Yes
EURC	0x1aBaEA1f7C830bD89Acc67eC4af516284b1bC33c	No
PYUSD	0x6c3ea9036406852006290770BEdFcAbA0e23A0e8	No
AUSD	0x00000000eFE302BEAA2b3e6e1b18d08D69a9012a	No

Contract	Address
AuthCaptureEscrow	0x9D4146EF898c8E60B3e865AE254ef438E7cEd2A0
OperatorFactory	0x1e52a74cE6b69F04a506eF815743E1052A1BD28F
EM PaymentOperator	0x69B67962ffb7c5C7078ff348a87DF604dfA8001b

Polygon

Token	Address	Enabled for new payments
USDC	0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359	Yes
AUSD	0x00000000eFE302BEAA2b3e6e1b18d08D69a9012a	No

Contract	Address
AuthCaptureEscrow	0x32d6AC59BCe8DFB3026F10BcaDB8D00AB218f5b6
OperatorFactory	0xb33D6502EdBbC47201cd1E53C49d703EC0a660b8
EM PaymentOperator	0xB87F1ECC85f074e50df3DD16A1F40e4e1EC4102e

Arbitrum

Token	Address	Enabled for new payments
USDC	0xaf88d065e77c8cC2239327C5EDb3A432268e5831	Yes
USDT	0xFd086bC7CD5C481DCC9C85ebE478A1C0b69FCbb9	No
AUSD	0x00000000eFE302BEAA2b3e6e1b18d08D69a9012a	No

Contract	Address
AuthCaptureEscrow	0x320a3c35F131E5D2Fb36af56345726B298936037
OperatorFactory	0x32d6AC59BCe8DFB3026F10BcaDB8D00AB218f5b6
EM PaymentOperator	0xC2377a9Db1de2520BD6b2756eD012f4E82F7938e

Celo

Token	Address	Enabled for new payments
USDC	0xcebA9300f2b948710d2653dD7B07f33A8B32118C	Yes
USDT	0x48065fbBE25f71C9282ddf5e1cD6D6A887483D5e	No

Contract	Address
AuthCaptureEscrow	0x320a3c35F131E5D2Fb36af56345726B298936037
OperatorFactory	0x32d6AC59BCe8DFB3026F10BcaDB8D00AB218f5b6
EM PaymentOperator	0xC2377a9Db1de2520BD6b2756eD012f4E82F7938e

Monad

Token	Address	Enabled for new payments
USDC	0x754704Bc059F8C67012fEd69BC8A327a5aafb603	Yes
AUSD	0x00000000eFE302BEAA2b3e6e1b18d08D69a9012a	No

Contract	Address
AuthCaptureEscrow	0x320a3c35F131E5D2Fb36af56345726B298936037
OperatorFactory	0x32d6AC59BCe8DFB3026F10BcaDB8D00AB218f5b6
EM PaymentOperator	0x9620Dbe2BB549E1d080Dc8e7982623A9e1Df8cC3

Avalanche

Token	Address	Enabled for new payments
USDC	0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E	Yes
EURC	0xC891EB4cbdEFf6e073e859e987815Ed1505c2ACD	No
AUSD	0x00000000eFE302BEAA2b3e6e1b18d08D69a9012a	No

Contract	Address
AuthCaptureEscrow	0x320a3c35F131E5D2Fb36af56345726B298936037
OperatorFactory	0x32d6AC59BCe8DFB3026F10BcaDB8D00AB218f5b6
EM PaymentOperator	0xC2377a9Db1de2520BD6b2756eD012f4E82F7938e

Optimism

Token	Address	Enabled for new payments
USDC	0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85	Yes
USDT	0x01bff41798a0bcf287b996046ca68b395dbc1071	No

Contract	Address
AuthCaptureEscrow	0x320a3c35F131E5D2Fb36af56345726B298936037
OperatorFactory	0x32d6AC59BCe8DFB3026F10BcaDB8D00AB218f5b6
EM PaymentOperator	0xC2377a9Db1de2520BD6b2756eD012f4E82F7938e

SKALE

Token	Address	Enabled for new payments
USDC	0x85889c8c714505E0c94b30fcfcF64fE3Ac8FCb20	No

Contract	Address
AuthCaptureEscrow	0xBC151792f80C0EB1973d56b0235e6bee2A60e245
OperatorFactory	0x3Cd5c76Fefe46CB07788Ee8f80B93B20D81941D4
EM PaymentOperator	0x43E46d4587fCCc382285C52012227555ed78D183

Solana

Token	Address	Enabled for new payments
USDC	EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v	Yes
AUSD	AUSD1jCcCyPLybk1YnvPWsHQSrZ46dxwoMniN4N2UEB9	No

NEAR

Configured in the registry but not enabled.

Token	Address	Enabled for new payments
USDC	17208628f84f5d6ad33f0da3bbbeb27ffcb398eac501a31bd6ad2011e36133a1	No

HyperEVM

Configured in the registry but not enabled.

Token	Address	Enabled for new payments
USDC	0xb88339CB7199b77E23DB6E890353E22632Ba630f	No

Unichain

Configured in the registry but not enabled.

Token	Address	Enabled for new payments
USDC	0x078D782b760474a361dDA0AF3839290b0EF57AD6	No

Scroll

Configured in the registry but not enabled.

Token	Address	Enabled for new payments
USDC	0x06eFdBFf2a14a7c8E15944D1F4A48F9F95F663A4	No

Arc

Token	Address	Enabled for new payments
USDC	0x3600000000000000000000000000000000000000	Yes
EURC	0xbEf5f6d51CB62b58e6A8f77868681825C6fe21c1	No

Contract	Address
AuthCaptureEscrow	0xBdEA0D1bcC5966192B070Fdf62aB4EF5b4420cff
OperatorFactory	0xc24153B7ED8DC03e551F29DDEeA5CadFe57e2716
EM PaymentOperator	0x0258472A1410Ac3Ad720f1BC83f22B3c0af1Fd9D

Robinhood

Token	Address	Enabled for new payments
USDG	0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168	Yes

Contract	Address
AuthCaptureEscrow	0xBdEA0D1bcC5966192B070Fdf62aB4EF5b4420cff
OperatorFactory	0xc24153B7ED8DC03e551F29DDEeA5CadFe57e2716
EM PaymentOperator	0x0258472A1410Ac3Ad720f1BC83f22B3c0af1Fd9D

Robinhood Testnet (testnet)

Token	Address	Enabled for new payments
USDG	0x7E955252E15c84f5768B83c41a71F9eba181802F	No

Base Sepolia (testnet)

Token	Address	Enabled for new payments
USDC	0x036CbD53842c5426634e7929541eC2318f3dCF7e	No

Contract	Address
AuthCaptureEscrow	0x29025c0E22D4ef52e931E8B3Fb74073C32E4e5f2
OperatorFactory	0x97d53e63A9CB97556c00BeFd325AF810c9b267B2

Ethereum Sepolia (testnet)

Token	Address	Enabled for new payments
USDC	0x1c7D4B196Cb0C7B01d743Fbc6116a902379C7238	No

Contract	Address
AuthCaptureEscrow	0x320a3c35dC6Ae4FF3ac05bB56D67C6f7f7e2b3c1
OperatorFactory	0x32d6AC59BCe8DFB3026F10BcaDB8D00AB218f5b6

Polygon Amoy (testnet)

Token	Address	Enabled for new payments
USDC	0x41E94Eb019C0762f9Bfcf9Fb1E58725BfB0e7582	No

Arbitrum Sepolia (testnet)

Token	Address	Enabled for new payments
USDC	0x75faf114eafb1BDbe2F0316DF893fd58CE46AA4d	No

Configuration

# Default network
X402_NETWORK=base

# Enabled networks (canonical default)
EM_ENABLED_NETWORKS=base,ethereum,polygon,arbitrum,celo,monad,avalanche,optimism,skale,arc,solana,robinhood

Per-task network override via API:

{ "bounty_usd": 1.00, "network": "polygon" }