Look up a business entity by its website domain. STATUS: Coming in v1.2 — endpoint not yet deployed.
Part of the ENTIA Entity Verification server.
Free to start. No card required.
AI agents call lookup_by_domain to retrieve information from ENTIA Entity Verification without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though lookup_by_domain only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"lookup_by_domain": {}
}
}See the full ENTIA Entity Verification policy for all 14 tools.
These attack patterns abuse exactly the kind of access lookup_by_domain gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
Look up a business entity by its website domain. STATUS: Coming in v1.2 — endpoint not yet deployed.. It is categorised as a Read tool in the ENTIA Entity Verification MCP Server, which means it retrieves data without modifying state.
Register the ENTIA Entity Verification MCP server in PolicyLayer and add a rule for lookup_by_domain: 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 ENTIA Entity Verification. Nothing to install.
lookup_by_domain 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 lookup_by_domain 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 lookup_by_domain. 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.
lookup_by_domain is provided by the ENTIA Entity Verification MCP server (https://mcp.entia.systems/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 14 ENTIA Entity Verification tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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