AI agents call sg_carpark_availability to retrieve information from Sgdata without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves real-time carpark occupancy data from Singapore's public government datasets. It performs a simple query to return current availability information without creating, modifying, deleting, or executing anything. The data returned is informational only and poses minimal security risk if misused by an AI agent.
From the tool's definition Tool queries 'Live HDB/LTA carpark lot availability across Singapore' — a read-only data retrieval operation with no modification, deletion, or execution capability.
Attacks that exploit this kind of access
Live HDB/LTA carpark lot availability across Singapore (updated every. It is categorised as a Read tool in the Sgdata MCP Server, which means it retrieves data without modifying state.
Register the Sgdata MCP server in PolicyLayer and add a rule for sg_carpark_availability: 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 Sgdata. Nothing to install.
sg_carpark_availability 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_carpark_availability 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_carpark_availability. 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_carpark_availability is provided by the Sgdata MCP server (sypherin/sgdata-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
sg_carpark_availability is one line of Sgdata's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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