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Bundler & Paymaster RPCs

To ensure utmost reliability for our customers, our RPCs use multiple bundlers under the hood, including:

  • UltraRelay, ZeroDev's own bundler optimized for sponsored transactions
  • Alchemy
  • Gelato
  • Pimlico

Our RPCs support all standard methods defined in the ERC-4337 spec.

By default, ZeroDev sends traffic to a provider that's known to work well on the given network. However, you can configure which specific provider to proxy traffic to, as described below.

You can find the bundler & paymaster RPCs for a specific ZeroDev project on the ZeroDev dashboard.

Bundler RPC

  • Bundler RPC: https://rpc.zerodev.app/api/v2/bundler/<PROJECT_ID>

You can append the following query params (i.e. ?param=value) to the RPC:

  • provider, which specifies the underlying bundler to use. Possible values include:
    • ULTRA_RELAY
    • ALCHEMY
    • GELATO
    • PIMLICO

Paymaster RPC

  • Paymaster RPC: https://rpc.zerodev.app/api/v2/paymaster/<PROJECT_ID>

You can append the following query params (i.e. ?param=value) to the RPC:

  • provider, which specifies the underlying paymaster to use. Possible values include:
    • ULTRA_RELAY
    • ALCHEMY
    • GELATO
    • PIMLICO