Look up entities registered to do business with the US federal government in SAM.gov. Search by ueiSAM, cageCode, or legalBusinessName. Returns UEI, CAGE, legal/DBA name, registration status + dates, an active-exclusion flag, address, and business types. Free, public-domain. The federal counterpa...
AI agents call gov.entity to retrieve information from Mcp without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries publicly available federal business registration data from SAM.gov. It performs lookups by various identifiers and returns structured information about registered entities. There are no side effects, data modifications, deletions, code execution, or financial operations.
From the tool's definition Tool description states it 'Look[s] up entities' and 'Returns UEI, CAGE, legal/DBA name, registration status + dates' — pure data retrieval with no modification or deletion. Explicitly marked 'Free, public-domain', confirming read-only nature.
Attacks that exploit this kind of access
Look up entities registered to do business with the US federal government in SAM.gov. Search by ueiSAM, cageCode, or legalBusinessName. Returns UEI, CAGE, legal/DBA name, registration status + dates, an active-exclusion flag, address, and business types. Free, public-domain. The federal counterparty identity key. It is categorised as a Read tool in the Mcp MCP Server, which means it retrieves data without modifying state.
Register the MCP server in PolicyLayer and add a rule for gov.entity: 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 Mcp. Nothing to install.
gov.entity 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 gov.entity 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 gov.entity. 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.
gov.entity is provided by the MCP server (@2sio/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.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
Teams ship this data inside their own products. See what a licence covers →