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🎉 We raised $1.6 million to build the best infrastructure platform for smart
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TutorialsTutorialspermissionless.jspermissionless.jsHow-to GuidesHow-to
GuidesReference GuidesReference GuidesConceptual GuidesConceptual GuidesContact
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 * Tutorials
    * Overview
    * Tutorial 1 — Submit a User Operation with a Verifying Paymaster
    * Tutorial 2 — Submit a User Operation with an ERC-20 Paymaster

 * permissionless.js
    * Home
    * Reference
       * Overview
       * Clients
          * Bundler Client
          * Pimlico Bundler Client
          * Pimlico Paymaster Client
      
       * Bundler Actions
          * sendUserOperation
          * estimateUserOperationGas
          * getUserOperationReceipt
          * getUserOperationByHash
          * supportedEntryPoints
      
       * Pimlico Bundler Actions
          * getUserOperationGasPrice
          * getUserOperationStatus
      
       * Pimlico Paymaster Actions
          * sponsorUserOperation
      
       * Public Actions
          * getSenderAddress
      
       * Utilities
          * getUserOperationHash

 * How-to Guides
    * Overview
    * Quick Start
    * ⛰️ Alto Bundler
       * How to Bundle a User Operation
       * How to Estimate the Gas Limits for a User Operation
   
    * 🪄 Verifying Paymaster
       * How to Sponsor a User Operation
   
    * 🔗 Integrations
       * Lit Protocol

 * Reference Guides
    * Overview
    * Permissionless.js
    * ⛰️ Alto Bundler
       * Overview
       * Endpoints
       * Common Errors
   
    * 🪄 Verifying Paymaster
       * Overview
       * Endpoints
       * Common Errors
   
    * 🪙 ERC-20 Paymaster
       * Contract Addresses
       * ERC20 Paymaster SDK

 * Conceptual Guides
    * Overview
    * About Account Abstraction
    * About Pimlico's ERC-20 Paymaster
       * Overview
       * Architecture
       * FAQs

 * Overview
   
 * Contact ↗ (opens in a new tab)

System




ERC-20 PAYMASTER

Pimlico's ERC-20 Paymaster is an on-chain ERC-4337 paymaster that is able to pay
for the gas fees of your users in exchange for ERC-20 tokens.

Pimlico is proud to have launched the first permissionless, fully-audited ERC20
Paymaster 🎉


TUTORIALS

Learning-oriented lessons that take you through a series of steps to complete a
project. Most useful when you want to get started with Pimlico. They all involve
the Alto Bundler.

 * Tutorial 2 leverages the ERC-20 Paymaster to sponsor the gas fees for a User
   Operation with USDC.


REFERENCES

References provide specific technical descriptions. They are most useful when
you need detailed information about Pimlico's APIs.

 * Learn about how you can use the ERC20 Paymaster Typescript SDK.
 * See the official contract addresses of the ERC20 Paymaster on each chain.


CONCEPTUAL GUIDES

Conceptual guides provide high-level explanations of concepts. They are most
useful when you need to understand the big picture.

 * Understand more about the architecture of our ERC20 Paymaster.
 * Check out our FAQs.


System

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