MCP Crypto Wallet EVM

Instructions

Implementation Reference

• src/handlers/wallet.ts:193-204 (handler)

  The core handler function that implements the wallet_get_public_key tool. It retrieves the wallet instance using getWallet helper and returns the public key.

  export const getPublicKeyHandler = async (input: any): Promise<ToolResultSchema> => {
    try {
      const wallet = await getWallet(input.wallet);
  
      return createSuccessResponse(
      `Wallet public key retrieved successfully:
        Public Key: ${wallet.publicKey}
      `);
    } catch (error) {
      return createErrorResponse(`Failed to get wallet public key: ${(error as Error).message}`);
    }
  };

• src/tools.ts:152-162 (schema)

  Input schema and tool metadata definition for wallet_get_public_key.

  {
    name: "wallet_get_public_key",
    description: "Get the wallet public key",
    inputSchema: {
      type: "object",
      properties: {
        wallet: { type: "string", description: "The wallet (private key, mnemonic, or JSON). If not provided, uses PRIVATE_KEY environment variable if set." }
      },
      required: []
    }
  },

• src/tools.ts:556-608 (registration)

  Registration of tool names to their handler functions in the central handlers dictionary. Specifically maps 'wallet_get_public_key' to getPublicKeyHandler.

  export const handlers: HandlerDictionary = {
    // Provider Methods
    "wallet_provider_set": setProviderHandler,
    // Wallet Creation and Management
    "wallet_create_random": createWalletHandler,
    "wallet_from_private_key": fromPrivateKeyHandler,
    "wallet_from_mnemonic": fromMnemonicHandler,
    "wallet_from_encrypted_json": fromEncryptedJsonHandler,
    "wallet_encrypt": encryptWalletHandler,
  
    // Wallet Properties
    "wallet_get_address": getAddressHandler,
    "wallet_get_public_key": getPublicKeyHandler,
    "wallet_get_private_key": getPrivateKeyHandler,
  
    // Blockchain Methods
    "wallet_get_balance": getBalanceHandler,
    "wallet_get_chain_id": getChainIdHandler,
    "wallet_get_gas_price": getGasPriceHandler,
    "wallet_get_transaction_count": getTransactionCountHandler,
    "wallet_call": callHandler,
  
    // Transaction Methods
    "wallet_send_transaction": sendTransactionHandler,
    "wallet_sign_transaction": signTransactionHandler,
    "wallet_populate_transaction": populateTransactionHandler,
  
    // Signing Methods
    "wallet_sign_message": signMessageHandler,
    "wallet_sign_typed_data": signTypedDataHandler,
    "wallet_verify_message": verifyMessageHandler,
    "wallet_verify_typed_data": verifyTypedDataHandler,
  
    // Provider Methods
    "provider_get_block": getBlockHandler,
    "provider_get_transaction": getTransactionHandler,
    "provider_get_transaction_receipt": getTransactionReceiptHandler,
    "provider_get_code": getCodeHandler,
    "provider_get_storage_at": getStorageAtHandler,
    "provider_estimate_gas": estimateGasHandler,
    "provider_get_logs": getLogsHandler,
    "provider_get_ens_resolver": getEnsResolverHandler,
    "provider_lookup_address": lookupAddressHandler,
    "provider_resolve_name": resolveNameHandler,
  
    // Network Methods
    "network_get_network": getNetworkHandler,
    "network_get_block_number": getBlockNumberHandler,
    "network_get_fee_data": getFeeDataHandler,
  
    // Mnemonic Methods
    "wallet_create_mnemonic_phrase": createMnemonicPhraseHandler
  };