AI agents call get-gas-prices to retrieve information from Mcp Otc without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only reads and returns gas price information from the blockchain. It has no side effects, does not execute code, does not modify data, and does not move funds. It is a straightforward data retrieval operation typical of blockchain explorers like Etherscan.
From the tool's definition Tool name is 'get-gas-prices' and description states 'Get current gas prices in Gwei' — a pure query operation that retrieves real-time blockchain data without modification or execution.
Attacks that exploit this kind of access
Get current gas prices in Gwei. It is categorised as a Read tool in the Mcp Otc MCP Server, which means it retrieves data without modifying state.
Register the Mcp Otc MCP server in PolicyLayer and add a rule for get-gas-prices: 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 Mcp Otc. Nothing to install.
get-gas-prices 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 get-gas-prices 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 get-gas-prices. 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.
get-gas-prices is provided by the Mcp Otc MCP server (otc-ai/mcp-otc). 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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