AI agents call sales_comparables to retrieve information from Attom without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves comparable sales data from the ATTOM real estate API. It performs no data creation, modification, deletion, or external execution. The worst-case misuse (an AI agent requesting excessive comparable sales data) has minimal blast radius—it may cause rate-limiting or data exposure but cannot alter property records, trigger financial transactions, or execute arbitrary operations.
From the tool's definition Tool name 'sales_comparables' and description 'Get sales comparables information' indicates data retrieval without modification. The verb 'Get' confirms read-only operation.
Attacks that exploit this kind of access
Get sales comparables information. It is categorised as a Read tool in the Attom MCP Server, which means it retrieves data without modifying state.
Register the Attom MCP server in PolicyLayer and add a rule for sales_comparables: 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 Attom. Nothing to install.
sales_comparables 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 sales_comparables 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 sales_comparables. 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.
sales_comparables is provided by the Attom MCP server (nkbud/mcp-server-attom). 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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