AI agents call sg_company_uen to retrieve information from Sg Data 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 public company registration information from Singapore's ACRA (Accounting and Corporate Regulatory Authority) database using a UEN identifier. It performs a read-only lookup operation with no capability to modify, delete, or execute actions.
From the tool's definition Tool description states 'Look up a Singapore company by UEN' and 'Returns full ACRA registration details'. The verb 'Look up' and 'Returns' indicate data retrieval with no modification or side effects.
Attacks that exploit this kind of access
Look up a Singapore company by UEN (Unique Entity Number). Returns full ACRA registration details. Use when you have a UEN to verify. It is categorised as a Read tool in the Sg Data MCP Server, which means it retrieves data without modifying state.
Register the Sg Data MCP server in PolicyLayer and add a rule for sg_company_uen: 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 Sg Data. Nothing to install.
sg_company_uen 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 sg_company_uen 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 sg_company_uen. 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.
sg_company_uen is provided by the Sg Data MCP server (vdineshk/sg-data-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.
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