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Portal Setup Guide

If you would like to sponsor gas for your users, you need to create a Paymaster and set up gas policies on the SCS portal.

Note: You need to enable the Growth plan to access Account Abstraction (AA) features.

Bundler and Paymaster Keys​

Create an API key from the API Keys section. Once created, click the key name to reveal your Bundler and Paymaster URLs.

Create API Key

Get URLs

Creating a Paymaster​

Under the Paymasters tab, you can choose between two types:

  1. Self-Funded – A prepaid Paymaster. You manually top-up ETH to sponsor user gas.
  2. Managed – A postpaid Paymaster billed monthly in USD based on usage.

Choose Paymaster Type

Self-Funded Paymaster​

Requires a Sponsor Account (EOA). Anyone can deposit ETH to this account, but only the sponsor can withdraw.

Sponsor Setup

Managed Paymaster​

Requires no sponsor account setup. Just create the Paymaster and start attaching policies. Upon creation, you'll receive a paymasterId to pass into the paymasterContext:

paymasterContext: { calculateGasLimits: true, paymasterId: "<YOUR_PAYMASTER_ID>" }

Gas Policies

Once a Paymaster is created, you can attach policies to control how much gas is sponsored and under what conditions.

Policy Types​

  • Global Policies — Apply to the entire project
  • Contract Policies — Coming soon
  • User Policies — Apply to specific wallet addresses

Rate Limit Types​

  • Amount — Limit by the amount of gas used
  • User Operations — Limit by the number of user operations

⏱ Policies currently reset every 7 days

Creating Policies​

Step 1: Click on Create Policy under each Paymaster​

Create Policy button

Step 2: Configure the policy details​

Configure policy form

Once policies are attached, transactions using that paymasterId will be metered and sponsored according to the configured rules.