npm · brdata-mcp
EVM_PRIVATE_KEY · secret — 0x private key of a DEDICATED wallet holding USDC on Base (pays per call). Paid tools return 402 without it; the free validate_cnpj tool still works.
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).
BRDATA_BASE_URL — Base URL of a brdata Worker. Defaults to the hosted production API (https://brdata.thomenz.me).
X402_NETWORK — 'base' (mainnet, default) or 'base-sepolia' (testnet).