OpenFinance: one market API for agents — with Solana spot & DeFi

OpenFinance (by GTR.Trade) gives an AI agent one API key to trade crypto spot, perps, US equities, prediction markets, and DeFi across chains — Solana, Ethereum, and Base for spot & DeFi. It ships as an MCP server that builds and simulates transactions for the agent to sign itself, so keys stay with the agent.