CrowPay – add x402 in a few lines, let AI agents pay per request
x402 middleware for REST APIs, but agent payments are still niche and early.

Blockchain-based API discovery marketplace—unclear if agents will actually pay per query.
AI agent developers, service marketplaces, blockchain-aware API consumers
Stripe Connect · Rapid API
x402 middleware for REST APIs, but agent payments are still niche and early.
A2A + MCP agent marketplace, but the whole category is pre-revenue speculation.
Decentralized skill discovery protocol for agents, like robots.txt for LLM actions.
Three-line middleware for x402 payments—Stripe for AI agents, but crypto-native.
x402 payment layer for agent microtransactions solves real API key friction.
OpenAPI for agent verification with risk scoring before merge — ambitious standardization play.