A directory of services AI agents can actually use — APIs, tools and merchants with machine-readable interfaces and agent payment protocols. Badges are probe-backed, never self-asserted.
| Category |
|---|
| Score |
|---|
 CircleMCPOpenAPIllms.txtx402 USDC issuance, programmable wallets, and Circle Payments for agent-to-agent settlement | Payments | ||
 NeverminedMCPOpenAPIllms.txtx402 Metering, authorization, and settlement for agent APIs, including an x402 facilitator and credit-based plans | Payments | ||
 ZuploMCPOpenAPIllms.txtx402 API gateway that puts an x402 or key-based paywall in front of any endpoint agents call | Payments |
Same query as JSON: /api/v1/services?category=pay&protocol=x402&auth_method=api-key