estimate_batch · Base Batch Send MCP: Risk & Policy

WHAT IT DOES

What estimate_batch does on Base Batch Send

AI agents use estimate_batch to create or update resources in Base Batch Send — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Base Batch Send environment.

WHY IT NEEDS A POLICY

Why estimate_batch needs a policy

An AI agent can call estimate_batch faster than any human can review — one bad instruction and it creates or modifies resources in Base Batch Send by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

estimate_batch Rate-limited

estimate_batch stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "estimate_batch": {
      "limits": [
        {
          "counter": "estimate_batch_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Base Batch Send, so you can run agents against it safely.

FAQ

Questions about estimate_batch

What does the estimate_batch tool do? +

Estimate gas cost and total ETH needed for a batch send operation. Use before executing to verify costs. It is categorised as a Write tool in the Base Batch Send MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on estimate_batch? +

Register the Base Batch Send MCP server in PolicyLayer and add a rule for estimate_batch: 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.

What risk level is estimate_batch? +

estimate_batch is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit estimate_batch? +

Yes. Add a rate_limit block to the estimate_batch 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.

How do I block estimate_batch completely? +

Set action: deny in the PolicyLayer policy for estimate_batch. 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.

What MCP server provides estimate_batch? +

estimate_batch 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.