account__getminedblocks

THE RISK

Low Risk

Why account__getminedblocks needs a policy

This tool retrieves historical blockchain validation data for an address. It has no side effects, cannot execute code or commands, and does not modify, delete, or create data. The query-only nature and the Etherscan API context (which provides read-only blockchain data access) confirm this is a Read category tool. Severity is low because misuse only exposes existing public blockchain information.

From the tool's definition Tool description states it 'Returns the list of blocks validated by an address' — a retrieval operation with no modification or execution capability.

Documented attack patterns abuse exactly the kind of access account__getminedblocks gives an agent:

POLICY

How to control account__getminedblocks

PolicyLayer is an MCP gateway — it sits between your AI agents and Etherscan MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for account__getminedblocks:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "account__getminedblocks": {}
  }
}

account__getminedblocks is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Etherscan MCP — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Etherscan MCP tools

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about account__getminedblocks

What does the account__getminedblocks tool do? +

Returns the list of blocks validated by an address. It is categorised as a Read tool in the Etherscan MCP MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on account__getminedblocks? +

Register the Etherscan MCP server in PolicyLayer and add a rule for account__getminedblocks: 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 Etherscan MCP. Nothing to install.

What risk level is account__getminedblocks? +

account__getminedblocks is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit account__getminedblocks? +

Yes. Add a rate_limit block to the account__getminedblocks 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 account__getminedblocks completely? +

Set action: deny in the PolicyLayer policy for account__getminedblocks. 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 account__getminedblocks? +

account__getminedblocks is provided by the Etherscan MCP server (xiaok/etherscan-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Etherscan MCP tool call.

Start from Etherscan MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →