Show HN: Web tools an AI agent pays for per call in USDC, no API key (x402+MCP)

Category: infrastructure

Tags: ai-agents, web-search, micro-payments, blockchain, api

Score: 5.3/10 (Innovation: 6, Technical: 5, Documentation: 5, Utility: 5)

Superhighway is a web-search API designed for AI agents that uses the x402 protocol to accept micro-payments in USDC, eliminating the need for API keys or human involvement. It combines SearXNG for search with blockchain-based payment, enabling autonomous agent-driven queries at a cost of $0.001 per search.

Target audience: backend devs, ai engineers

Repository: https://superhighway.walls.sh

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