Convert between Wei, Gwei, and ETH
AI agents call convert-eth-units to retrieve information from Underground Cultural District MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool performs a mathematical conversion between Ethereum denominations (Wei, Gwei, ETH). It is purely a calculation/display operation with no financial transactions, data writes, or external calls implied. Similar to convert-timestamp, it is a stateless utility function. Severity is low as misuse has no financial or data impact.
From the tool's definition Convert between Wei, Gwei, and ETH — this is a unit conversion utility with no side effects
Attacks that exploit this kind of access
Convert between Wei, Gwei, and ETH. It is categorised as a Read tool in the Underground Cultural District MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Underground Cultural District MCP Server MCP server in PolicyLayer and add a rule for convert-eth-units: 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 Underground Cultural District MCP Server. Nothing to install.
convert-eth-units 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 convert-eth-units 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 convert-eth-units. 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.
convert-eth-units is provided by the Underground Cultural District MCP Server MCP server (lisamaraventano-spine/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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