Solvela #1448

Solana-native AI agent payment gateway — pay per request for LLM API calls (OpenAI, Anthropic, Google, xAI, DeepSeek) with USDC-SPL via x402. OpenAI-compatible proxy, deterministic smart routing, exact-match response cache, and trustless on-chain escrow. No accounts, no API keys — agents pay wallet-to-wallet.