X402 Multi Chain Blockchain Gateway MCP Server

What is X402 Multi Chain Blockchain Gateway?

A pay-per-call blockchain data API that provides REST endpoints for NEAR Protocol, Solana, and Base (Ethereum L2). It uses the x402 protocol for per-request USDC micropayments ($0.001–$0.005 per call) on Solana or Base. No API keys or signup required—just attach an X-PAYMENT header with a USDC transaction proof.

How to use X402 Multi Chain Blockchain Gateway?

Make HTTP GET requests to any of the 24 endpoints, including an X-PAYMENT header containing a USDC transaction proof from Solana mainnet (solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp) or Base (eip155:8453). The gateway is agent-discoverable via OpenAPI 3.1, A2A agent card, ChatGPT plugin manifest, and llms.txt. For self-hosting, clone the repository, install dependencies, set X402_PAY_TO and X402_BASE_PAY_TO environment variables, then start the server.

Key features of X402 Multi Chain Blockchain Gateway

• 24 REST endpoints across NEAR, Solana, and Base
• Micropayments via x402 protocol ($0.001–$0.005 USDC per call)
• No API keys, no signup required
• Agent-discoverable: OpenAPI 3.1, A2A card, ChatGPT plugin, llms.txt
• Built-in analytics dashboard with payment tracking
• Can self‑host with free/demo mode (no payment required)

Use cases of X402 Multi Chain Blockchain Gateway

• AI agents querying on-chain data on demand with microtransactions
• Developers building cross-chain dashboards without managing RPC keys
• Automated analytics pipelines fetching balances, validators, and token data
• Wallet applications tracking account activity across NEAR, Solana, and Base