Fetch a price quote for buying crypto with fiat. Returns expected crypto out, fees, and ETA. Use before signing an onramp URL so the agent can decide if the rate is acceptable.
AI agents call moonpay_get_quote to retrieve information from Execution Market without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and displays informational data (crypto price quotes, fees, ETAs) to help an agent decide whether to proceed with a transaction. It has no side effects, does not execute transactions, does not move funds, and does not modify any data. It is purely a Read operation used for decision-making prior to user confirmation of a financial transaction.
From the tool's definition Tool description states it 'Fetch[es] a price quote' and 'Returns expected crypto out, fees, and ETA.' These are read-only operations that retrieve pricing information without modifying state, executing code, or committing financial transactions.
Attacks that exploit this kind of access
Fetch a price quote for buying crypto with fiat. Returns expected crypto out, fees, and ETA. Use before signing an onramp URL so the agent can decide if the rate is acceptable. It is categorised as a Read tool in the Execution Market MCP Server, which means it retrieves data without modifying state.
Register the Execution Market MCP server in PolicyLayer and add a rule for moonpay_get_quote: 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 Execution Market. Nothing to install.
moonpay_get_quote 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 moonpay_get_quote 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 moonpay_get_quote. 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.
moonpay_get_quote is provided by the Execution Market MCP server (https://mcp.execution.market/mcp/). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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