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The networks described here are supported by CDP REST and JSON-RPC APIs described in the left-hand nav.

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REST API

A comprehensive list of CDP APIs offered across the networks we support, along with their corresponding testnets.

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Base

APIBase MainnetBase Sepolia
Addresses✅✅
Assets✅✅
Faucet-✅
Networks✅✅
Paymaster✅✅
Send✅✅
Smart Contract Interactions✅✅
Staking--
Trades✅-
Server Wallet✅✅
Webhooks✅✅
When constructing a REST API request for Base, use base-mainnet or base-sepolia as the network identifier.

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Ethereum

APIEthereum MainnetEthereum SepoliaEthereum Hoodi
Addresses✅✅✅
Assets✅✅-
Faucet-✅-
Networks✅✅-
Paymaster---
Send✅✅-
Smart Contract Interactions✅--
Staking✅-✅
Trades✅--
Server Wallet✅✅-
Webhooks---
When constructing a REST API request for Ethereum, use ethereum-mainnet, ethereum-sepolia or ethereum-hoodi as the network identifier.

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Solana

APISolana MainnetSolana Devnet
Addresses--
Assets--
Faucet--
Networks--
Paymaster--
Send--
Smart Contract Interactions--
Staking✅✅
Trades--
Server Wallet--
Webhooks--
When constructing a REST API request for Solana, use solana-mainnet or solana-devnet as the network identifier.

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Others

We also support Arbitrum and Polygon.
APIArbitrum MainnetPolygon Mainnet
Addresses✅✅
Assets✅✅
Faucet--
Networks✅✅
Paymaster--
Send✅✅
Smart Contract Interactions✅✅
Staking--
Trades✅✅
Server Wallet✅✅
Webhooks--
When constructing a REST API request for Arbitrum or Polygon, use arbitrum-mainnet or polygon-mainnet as the network identifier.

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JSON-RPC API

CDP Node provides free, rate-limited RPC endpoints built for Base and the Base Sepolia testnet. Free users are limited to approximately 50 requests per second. Please reach out in #node on our CDP Discord to request a limit increase.

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Base

RPC namespaceFunctionalityBase MainnetBase Sepolia
cdp_*Historical address data✅✅
pm_*Gas sponsorship management (Paymaster)✅✅
eth_*Base-specific EVM functionality✅✅
web3_*Client information✅✅
debug_*Debug tools✅✅
net_*Network info✅✅
Need an RPC endpoint? Create a new CDP account or sign in to your existing account, then navigate to the Node page to get your RPC endpoint and start building onchain!
When constructing a JSON-RPC API request, use base or base-sepolia as the network identifier.

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Network identifiers

The following table shows the network identifiers necessary for constructing requests to various CDP APIs:
NetworkEVM Chain IDHTTP API IdentifierJSON-RPC API Identifier
Arbitrum Mainnet42161 (0xa4b1)arbitrum-mainnetarbitrum
Base Mainnet8453 (0x2105)base-mainnetbase
Base Sepolia84532 (0x14a34)base-sepoliabase-sepolia
Bitcoin Mainnet-bitcoin-mainnetbitcoin
Ethereum Hoodi560048 (0x88bb0)ethereum-hoodi-
Ethereum Mainnet1 (0x1)ethereum-mainnetethereum
Optimism Mainnet10 (0xa)optimism-mainnetoptimism
Polygon Mainnet137 (0x89)polygon-mainnetpolygon
Solana Devnet-solana-devnet-
Solana Mainnet-solana-mainnet-
For CDP SDKs, find network identifiers in the corresponding SDK documentation (e.g, NodeJS and Python).
  • Supported Networks: A more high-level overview of the CDP product suite and supported features.