npm · brmarket-mcp
$npx -y brmarket-mcp@0.3.0 EVM_PRIVATE_KEY · secret — 0x private key of a DEDICATED wallet holding USDC on Base. OPTIONAL: product search and the tax calculator are free and work without any wallet; only search_by_image and the link comparison return 402 without it.
SOLANA_PRIVATE_KEY · secret — base58 or JSON-array secret key of a DEDICATED Solana wallet holding USDC (pays per call). Configure this and/or EVM_PRIVATE_KEY; the x402 layer settles on whichever rail the 402 advertises.
SOLANA_RPC_URL — Optional Solana RPC override used to build the payment (e.g. a Helius URL).
BRMARKET_BASE_URL — Base URL of a brmarket Worker. Defaults to the hosted production API (https://brmarket.thomenz.me).
X402_NETWORK — 'base' (mainnet, default) or 'base-sepolia' (testnet).