Returns the current price per gas in wei
AI agents call eth_gasPrice to retrieve information from EVM MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a pure query function that retrieves blockchain state information (current gas price) without modifying any data, executing code, or triggering transactions. It falls clearly into the Read category. The severity is low because misuse cannot directly harm systems—an agent calling this repeatedly would waste compute resources but poses no financial or destructive risk.
From the tool's definition Tool returns the current gas price in wei. The method name 'eth_gasPrice' and description 'Returns the current price per gas in wei' indicate a read-only query operation with no side effects.
Attacks that exploit this kind of access
Returns the current price per gas in wei. It is categorised as a Read tool in the EVM MCP Server MCP Server, which means it retrieves data without modifying state.
Register the EVM MCP Server MCP server in PolicyLayer and add a rule for eth_gasPrice: 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 EVM MCP Server. Nothing to install.
eth_gasPrice is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the eth_gasPrice 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 eth_gasPrice. 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.
eth_gasPrice is provided by the EVM MCP Server MCP server (jamesanz/evm-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.
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