AI agents call sg_company_search 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 queries a public business registry (ACRA) and retrieves read-only information. It has no side effects, cannot modify data, and does not execute code or trigger external operations. While the data could theoretically be used for social engineering or reconnaissance, the tool itself performs only harmless information retrieval from public government data.
From the tool's definition Tool description states it 'Search Singapore registered companies by name' and 'Returns UEN, entity type, status, and address.' The verb 'search' and 'returns' indicate retrieval only. No mention of modification, deletion, execution, or financial operations.
Attacks that exploit this kind of access
Search Singapore registered companies by name using ACRA data. Returns UEN, entity type, status, and address. Use for KYB verification, due diligence, or finding any Singapore business entity. 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_search: 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_search 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_search 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_search. 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_search 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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