getGasPrice

THE RISK

Low Risk

Why getGasPrice needs a policy

This tool performs a read-only query of blockchain state data. Retrieving gas price information has no side effects and poses minimal risk—it is informational data that helps users understand transaction costs but does not execute transactions, move funds, or modify any state. Severity is low because misuse cannot cause harm beyond information leakage.

From the tool's definition Tool description states 'Get the current gas price' with no mention of state modification, transaction execution, or financial transfers. It retrieves current network data (gas prices) for informational purposes only.

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

POLICY

How to control getGasPrice

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

policy.json

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

getGasPrice 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 Agentek Eth — 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

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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 getGasPrice

What does the getGasPrice tool do? +

Get the current gas price. If chainId is not specified, returns gas prices for all supported chains. It is categorised as a Read tool in the Agentek Eth MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on getGasPrice? +

Register the Agentek Eth MCP server in PolicyLayer and add a rule for getGasPrice: 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 Agentek Eth. Nothing to install.

What risk level is getGasPrice? +

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

Can I rate-limit getGasPrice? +

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

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

getGasPrice is provided by the Agentek Eth MCP server (nanidao/agentek). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Agentek Eth tool call.

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

CHECK YOUR STACK →