Signature Caller Policy

The signature caller policy specifies a list of addresses that are allowed to validate messages signed by the signer.

This is useful when you want the signer to sign messages for a set of particular protocols only. For example, if you want to create a signer that can only sign USDC permits, then you can use this policy to ensure that only the USDC contract can validate its messages.

API

import { toSignatureCallerPolicy } from "@zerodev/permissions/policies"
 
const signaturePolicy = toSignatureCallerPolicy({
  allowedCallers: [address1, address2]
})
 
const validator = toPermissionValidator(publicClient, {
  entryPoint,
  kernelVersion,
  signer: someSigner,
  policies: [
    signaturePolicy,
    // ...other policies
  ],
})

• allowedCallers is a list of addresses that are allowed to validate messages signed by the signer.