Model Context Protocol critical risk

Beeper

Beeper-mcp is a backend service for executing transactions on Binance Smart Chain, providing tools for wallet management, token transfers, swaps, and reward claims.

Connections & Capabilities

Connects To

GitHub

Capabilities

readwriteexecadmin

Quickstart

Config

{
  "mcpServers": {
    "beeper": {
      "command": "uv",
      "args": [
        "--directory",
        "path/to/beeper-mcp",
        "run", 
        "src/beeper_mcp/server.py"
        ],
      "env": {
        "BEEPER_ACCOUNT": "your account, 0x...",
        "BEEPER_SECRET_KEY": "your private key or in .env",
        "BEEPER_TARGET_TOKEN": "default token address",
        "BEEPER_CHAIN": "chain type <bsc/bsc-testnet>"
      }
    }
  }
}

Exposed MCP Tools (12)

safe

get_default_wallet_address

Retrieves the configured default wallet address.

Read-only operation, no side effects.

safe

get_default_token_address

Retrieves the configured default token address.

Read-only operation, no side effects.

moderate

switch_default_token_address

Changes the default token address used for transactions.

Modifies configuration, potential for user error.

safe

get_balance

Retrieves the BNB balance of a specified address.

Read-only operation, no side effects.

safe

get_token_balance

Retrieves the token balance of a specified address for a given token.

Read-only operation, no side effects.

critical

transfer

Transfers BNB to a specified recipient address.

Transfers funds, high risk of loss if incorrect address.

critical

transfer_token

Transfers tokens to a specified recipient address.

Transfers tokens, high risk of loss if incorrect address or token.

critical

swap_token

Swaps one token for another using PancakeSwap.

Involves financial transactions with external DEX, risk of slippage and loss.

safe

get_token_price

Retrieves the price of a token in BNB.

Read-only operation, no side effects.

critical

buy_token

Buys tokens with BNB using PancakeSwap.

Involves financial transactions, risk of price volatility and slippage.

critical

sell_token

Sells tokens for BNB using PancakeSwap.

Involves financial transactions, risk of price volatility and slippage.

critical

claim_rewards

Claims rewards for a specified token.

Potentially interacts with smart contracts, risk of unexpected behavior.

Safety Assessment

This service provides direct access to blockchain operations, making it highly risky if misconfigured or compromised. It is safe only when used with extreme caution, with a dedicated test wallet, and with strict controls on the amounts being transacted. The lack of sandboxing and direct private key access make it inherently dangerous for general use.

Requires explicit wallet address and private key configuration.
Operations are limited to the Binance Smart Chain.
Includes error handling and status tracking for transactions.

Direct access to private keys poses a significant security risk.
Enables financial transactions, potentially leading to loss of funds.
Lack of sandboxing could expose the system to vulnerabilities if compromised.
No built-in rate limiting or spending limits.