Extensions
Community-built tools and integrations for MPP
Third-party packages that extend MPP with new payment methods, middleware, and utilities.
| Name | Languages | Description | Link |
|---|---|---|---|
@insumermodel/mppx-condition-gate | TypeScript, JavaScript | Condition-based access for mppx routes—free access for wallets that meet token, NFT, EAS attestation, or Farcaster ID conditions across 33 chains, returned as ECDSA-signed attestations | npm · GitHub |
mpp-inspector | TypeScript, JavaScript | CLI toolkit to inspect, debug, and test HTTP 402 MPP endpoints—parse challenges, verify receipts, compare pricing, and dry-run payment flows | npm · GitHub |
x402-proxy | TypeScript, JavaScript | curl for MPP and x402 paid APIs—auto-pays one-shot charges and session-based streaming (per-token voucher cycling), with built-in wallet management (EVM + Solana), spend limits, and MCP stdio proxy for AI agents | npm · GitHub |
@quicknode/mpp | TypeScript, JavaScript | Extends MPP with payments on Ethereum, Base, and other EVM networks, with support for permit2, EIP-3009 authorization and hash credential types | npm · GitHub |
Want to build your own? See Custom payment methods.