{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "coinbase_fetchPermission",
  "params": [{
    "permissionHash": "0x1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef"
  }]
}

{
  "id": 1,
  "jsonrpc": "2.0",
  "result": {
    "permission": {
      "createdAt": 1640995200,
      "permissionHash": "0x1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef",
      "signature": "0xdef456...",
      "spendPermission": {
        "account": "0xfB2adc8629FC9F54e243377ffcECEb437a42934C",
        "spender": "0x2a83b0e4462449660b6e7567b2c81ac6d04d877d",
        "token": "0xA0b86a33E6441b97B7cd5C4F5B42a6e2F8a38923",
        "allowance": "1000000000000000000",
        "period": 86400,
        "start": 1640995200,
        "end": 1672531200,
        "salt": "12345678901234567890",
        "extraData": "0x"
      }
    }
  }
}
Coinbase-specific RPC method
Retrieves a single spend permission by its unique hash identifier. This method allows direct lookup of a specific permission without needing to know the account, chain, or spender details.

​
Parameters

​
permissionHash
string
required
The unique hash identifier of the permission to retrieve.

​
Returns

​
result
object
The permission response object.
{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "coinbase_fetchPermission",
  "params": [{
    "permissionHash": "0x1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef"
  }]
}

{
  "id": 1,
  "jsonrpc": "2.0",
  "result": {
    "permission": {
      "createdAt": 1640995200,
      "permissionHash": "0x1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef",
      "signature": "0xdef456...",
      "spendPermission": {
        "account": "0xfB2adc8629FC9F54e243377ffcECEb437a42934C",
        "spender": "0x2a83b0e4462449660b6e7567b2c81ac6d04d877d",
        "token": "0xA0b86a33E6441b97B7cd5C4F5B42a6e2F8a38923",
        "allowance": "1000000000000000000",
        "period": 86400,
        "start": 1640995200,
        "end": 1672531200,
        "salt": "12345678901234567890",
        "extraData": "0x"
      }
    }
  }
}

​
Error Handling

CodeMessageDescription
-32602Invalid paramsThe permissionHash parameter is invalid or missing
-32603Internal errorPermission not found or internal server error
-32001Failed preconditionThe method is currently disabled via kill switch
The permissionHash must be a valid hex-encoded hash string. The method will return an error if the permission doesn’t exist or has been deleted.

​
Usage Notes

This method is particularly useful when:
  • You have a permission hash from a previous operation and need to retrieve its details
  • You want to verify the current state of a specific permission
  • You need to look up permission details without knowing the account or spender information
Unlike coinbase_fetchPermissions, this method:
  • Returns a single permission instead of a list
  • Does not require account, chain, or spender parameters
  • Does not support pagination
  • Provides direct access via the permission’s unique identifier