AI agents call home_equity 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 real estate valuation data (home equity information) from the ATTOM API. It is a read-only operation that returns data without side effects—no creation, modification, deletion, or financial transaction occurs. The pattern is consistent with sibling tools like 'assessment_detail', 'avm_detail', and 'avm_snapshot', which are all data retrieval functions.
From the tool's definition Tool name 'home_equity' and description 'Get home equity valuation information' indicate retrieval of property valuation data with no modification, deletion, or financial transaction execution.
Attacks that exploit this kind of access
Get home equity valuation 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 home_equity: 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.
home_equity 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 home_equity 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 home_equity. 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.
home_equity 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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