x402api.vercel.app exposes a single REST endpoint (/x402/ai/flight-agent) that appears to provide an AI-powered "flight agent" capability. The provider is listed under Various with Solana as its network and a fixed price of $0.0200 per call. Because the endpoint currently lacks a published description, integrators should validate request/response formats and authentication, but the service is well-suited for embedding conversational or automated flight-related workflows and Solana-aware payment flows.