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io.github.AsaiShota/mcp-server
Officialx402-market
Let AI agents pay-per-call for any HTTP API via x402 on Base mainnet. One tool: pay_and_call.
Enable AI agents to call any HTTP API with micropayments via x402 on Base.
README not available yet.
Install
Configuration
Environment variables
MARKET_API_URLdefault https://x402-market-api.lien-studio-akiyama.workers.devMarketplace API base URL.
MCP_BUYER_PRIVATE_KEYsecretFunded buyer wallet private key (0x-prefixed). Required for pay_and_call; read-only tools work without it.
BASE_RPC_URLdefault https://mainnet.base.orgBase RPC endpoint. Defaults to Base mainnet public RPC; Alchemy/QuickNode recommended for higher rate limits.
BASE_CHAIN_IDdefault 84538453 = Base mainnet (default, matches live listings). 84532 = Base Sepolia testnet.
MCP_MAX_PRICEdefault 1.0Hard cap on per-call cost (USDC). Refuses to pay above this.
claude_desktop_config.json
{
"mcpServers": {
"mcp-server": {
"command": "npx",
"args": [
"-y",
"@x402-market/mcp-server@0.2.0-alpha.1"
],
"env": {
"MARKET_API_URL": "https://x402-market-api.lien-studio-akiyama.workers.dev",
"MCP_BUYER_PRIVATE_KEY": "<YOUR_MCP_BUYER_PRIVATE_KEY>",
"BASE_RPC_URL": "https://mainnet.base.org",
"BASE_CHAIN_ID": "8453",
"MCP_MAX_PRICE": "1.0"
}
}
}
}