Primer Pay

Tracking since Apr 16, 2026.

Changelog

• Apr 16, 2026
  description

  Primer Pay is a browser wallet that automatically handles x402 micropayments as you browse. When you visit content protected by an x402 paywall, Primer Pay seamlessly authorizes payment and unlocks access - no signup forms, no subscriptions, no friction.
  
  
  How it works
  
  The x402 protocol enables websites to request small payments (from fractions of a cent upwards) directly over HTTP. When you visit an x402-enabled site, Primer Pay detects the payment request, checks it against your configured limits, and if approved, signs a gasless USDC authorization. The content unlocks instantly, and you continue browsing.
  
  
  Key features
  
  ⛽ Gasless transactions - Pay with USDC without needing ETH for gas. Payments are processed through EIP-3009 authorizations.
  
  🔌 Multi-network support - View balances and make payments across Base, Ethereum, Arbitrum, Optimism, and Polygon.
  
  💰 Spend controls - Set per-payment limits, daily caps, and confirmation thresholds. You decide how much can be spent automatically.
  
  🛑 Domain allowlist - Restrict payments to specific trusted domains.
  
  📜 Transaction history - Track all payments by domain, amount, and network. Export to CSV.
  
  👮‍♂️ Self-custody - Your keys never leave your device. Wallet data is encrypted with AES-256-GCM and protected by your PIN.
  
  Getting started
  
  • Install the extension and create a new wallet (or import an existing one with a recovery phrase or private key)
  • Fund your wallet with USDC on Base
  • Configure your spend limits in Settings
  • Browse x402-enabled sites - payments happen automatically within your limits
  
  Security
  
  Primer Pay is a non-custodial wallet. Your private keys are generated locally, encrypted, and never transmitted. We cannot access your funds, recover your PIN, or reverse transactions. You are in full control.
  
  User Guide: https://docs.primer.systems
  x402 Protocol: https://x402.org
  Website: https://primer.systems

  Primer Pay is a browser wallet that automatically handles x402 micropayments as you browse. When you visit content protected by an x402 paywall, Primer Pay seamlessly authorizes payment and unlocks access - no signup forms, no subscriptions, no friction. For publishers, a companion WordPress plugin is available.
  
  
  How it works
  
  The x402 protocol enables websites to request small payments (from fractions of a cent upwards) directly over HTTP. When you visit an x402-enabled site, Primer Pay detects the payment request, checks it against your configured limits, and if approved, signs a gasless USDC authorization. The content unlocks instantly, and you continue browsing.
  
  
  Key features
  
  ⛽ Gasless transactions - Pay with USDC without needing ETH for gas. Payments are processed through EIP-3009 authorizations.
  
  🔌 Multi-network support - View balances and make payments across Base, Ethereum, Arbitrum, Optimism, and Polygon.
  
  💰 Spend controls - Set per-payment limits, daily caps, and confirmation thresholds. You decide how much can be spent automatically.
  
  🛑 Domain allowlist - Restrict payments to specific trusted domains.
  
  📜 Transaction history - Track all payments by domain, amount, and network. Export to CSV.
  
  👮‍♂️ Self-custody - Your keys never leave your device. Wallet data is encrypted with AES-256-GCM and protected by your PIN.
  
  Getting started
  
  • Install the extension and create a new wallet (or import an existing one with a recovery phrase or private key)
  • Fund your wallet with USDC on Base
  • Configure your spend limits in Settings
  • Browse x402-enabled sites - payments happen automatically within your limits
  
  For publishers
  
  Run a WordPress site? We also offer a free WordPress plugin that pairs with this extension to put any post behind a one-click x402 paywall. Set a price (e.g. $0.01 USDC), publish, and readers with Primer Pay installed unlock it automatically. Everyone else sees a teaser linking back to this extension.
  
  Download: https://github.com/primer-systems/primer-pay-wordpress/releases/
  
  
  Security
  
  Primer Pay is a non-custodial wallet. Your private keys are generated locally, encrypted, and never transmitted. We cannot access your funds, recover your PIN, or reverse transactions. You are in full control.
  
  User Guide: https://docs.primer.systems
  WordPress Plugin: https://github.com/primer-systems/primer-pay-wordpress/releases/
  x402 Protocol: https://x402.org
  Website: https://primer.systems

Permissions & access

Permissions

storagewebRequestscriptingtabsnotifications

Host access

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Screenshots

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