MCP server exposing 38 pay-per-call APIs: LLM inference (15 models), image generation, audio transcription, TTS, embeddings, crypto/market data, blockchain tools, and IPFS storage. USDC on Base/Solana; USDm on MegaETH.
{
"mcpServers": {
"x402engine-mcp": {
"url": "https://x402-gateway-production.up.railway.app",
"transport": "http",
"x402": { "wallet": "env:X402_WALLET", "maxUsdPerCall": 0.12 }
}
}
}