AI agents call sg_hawker_stats 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 summary statistics about hawker centres from Singapore government data. It performs a read operation querying public datasets (data.gov.sg) and returns aggregate information. There is no indication of data modification, deletion, code execution, or financial transactions. The incomplete description ('total count,') still clearly indicates a data retrieval function.
From the tool's definition Tool name 'sg_hawker_stats' and description 'Summary statistics of all hawker centres — total count' indicate retrieval of aggregated public data without modification or side effects.
Attacks that exploit this kind of access
Summary statistics of all hawker centres — total count,. 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_hawker_stats: 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_hawker_stats 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_hawker_stats 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_hawker_stats. 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_hawker_stats 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.
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 →