Get a quote for swapping between DIFFERENT tokens, same-chain or cross-chain (e.g. ETH → USDC on Base, or ETH on Ethereum → USDC on Base). Use when input and output tokens differ. Works same-chain and cross-chain. For same-token bridging (e.g. ETH on Ethereum → ETH on Base), use get_bridge_quote ...
AI agents call get_swap_quote to retrieve information from Relay MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and returns a quote or pricing information for a potential swap transaction. It does not execute any financial transaction, transfer funds, or make irreversible changes. The tool only provides data (a quote) to inform decision-making; actually executing the swap would require a separate tool.
From the tool's definition Get a quote for swapping between DIFFERENT tokens, same-chain or cross-chain... Use when input and output tokens differ. Works same-chain and cross-chain.
Attacks that exploit this kind of access
Get a quote for swapping between DIFFERENT tokens, same-chain or cross-chain (e.g. ETH → USDC on Base, or ETH on Ethereum → USDC on Base). Use when input and output tokens differ. Works same-chain and cross-chain. For same-token bridging (e.g. ETH on Ethereum → ETH on Base), use get_bridge_quote instead — it. It is categorised as a Read tool in the Relay MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Relay MCP Server MCP server in PolicyLayer and add a rule for get_swap_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 Relay MCP Server. Nothing to install.
get_swap_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 get_swap_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 get_swap_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.
get_swap_quote is provided by the Relay MCP Server MCP server (relayprotocol/relay-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.
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