The MPP registry — 100+ Machine Payments Protocol tools, SDKs, services, and payment methods across 15+ chains. The definitive directory for Stripe + Tempo agent payments.
Turn any API or MCP server into a paid service
MCP server for 402 Index: discover 15,000+ paid API endpoints across L402, x402, and MPP
Zero-dependency starter for turning a JSON API into a 402-style paid endpoint for x402/Base USDC experiments
29 Nostr protocol extensions (NIPs) for service coordination, trust, payments, disputes, key hierarchy, resource curation, and paid API discovery. Every NIP works independently -- no platform lock-in.
Claude Code skill for x402 protocol development - provides expert guidance for building x402-based servers and payment-gated APIs
Hosted Remote MCP and stdio server for SynapseNetwork agent payments, paid API discovery, invocation receipts, and ChatGPT/Claude-compatible MCP clients.
402.pub — ecosystem landing page + live service directory for Lightning-paid APIs
Listing Roast x402: 0ドル.001 paid ping + instant/indexed GET score, 0ドル.005 listing score, and 0ドル.01 paid API listing conversion roast.
Bridge between toll-booth and 402-announce — announce your toll-booth service on Nostr for decentralised paid API discovery
Expose any toll-booth-gated API as a NIP-90 Data Vending Machine on Nostr
Discover curated MPP resources, SDKs, and tools for AI agent payments and machine-to-machine commerce
Enable Solana payments for HTTP APIs with the Machine Payments Protocol
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