Payments middleware

3 reusable Payments middleware libraries across every platform — libraries, SDKs, and drop-in systems. You should never have to know which ecosystem it lives in.

• agentwallet-mcp

  by hifriendbot · Free · github

  Permissionless wallet infrastructure for AI agents. Create wallets, sign transactions, and broadcast on EVM + Solana. Pay and accept x402 payments. Built-in guards. No KYC. Up to 50% less expensive than Coinbase.

  AIEconomyPayments   JavaScript

• nopaynoplay

  by alexisometric · Free · github

  Stop chasing friends for the Jellyfin bill. NoPayNoPlay tracks monthly subscriptions, sends smart reminders, and blocks playback on expiry — without ever deleting an account. Self-hosted · Zero external calls · Free forever

  PaymentsNotifications   JavaScript

• voidly-pay

  by voidly-ai · Free · github

  Off-chain credit ledger + hire marketplace for AI agents. Ed25519-signed envelopes, atomic settlement, hire-and-release escrow. https://voidly.ai/pay

  AIPayments   JavaScript