Send ETH to multiple recipients in a single transaction on Base. Requires DEPLOYER_PRIVATE_KEY env var. A small batch fee (0.0005 ETH) is charged per batch.
AI agents use batch_send_eth to commit financial operations through Base Batch Send — usually the final step of a payment, billing, or trading workflow. A call moves real money.
This tool directly transfers cryptocurrency (ETH) to multiple recipients on the Base blockchain, which constitutes an irreversible financial transaction. Misuse by an AI agent could result in large-scale unauthorized fund transfers across many recipients simultaneously, making it critical severity. It uses a private key (DEPLOYER_PRIVATE_KEY) to sign and broadcast real on-chain transactions.
From the tool's definition 'Send ETH to multiple recipients in a single transaction on Base' and 'A small batch fee (0.0005 ETH) is charged per batch' — this tool moves real ETH to multiple addresses and incurs fees.
Attacks that exploit this kind of access
Send ETH to multiple recipients in a single transaction on Base. Requires DEPLOYER_PRIVATE_KEY env var. A small batch fee (0.0005 ETH) is charged per batch. It is categorised as a Financial tool in the Base Batch Send MCP Server, which means it involves financial transactions. Block by default and require explicit approval.
Register the Base Batch Send MCP server in PolicyLayer and add a rule for batch_send_eth: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Base Batch Send. Nothing to install.
batch_send_eth is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the batch_send_eth rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for batch_send_eth. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
batch_send_eth is provided by the Base Batch Send MCP server (lordbasilaiassistant-sudo/base-batch-send-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
Teams ship this data inside their own products. See what a licence covers →