reverse_geocode_svy21
AI agents call reverse_geocode_svy21 to retrieve information from OneMap MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Reverse geocoding is a standard location lookup operation that queries a mapping database to retrieve address/location data from coordinates. This is a read-only query with no side effects, fitting the 'Read' category. The tool retrieves existing geographic data without creating, modifying, deleting, or executing external operations.
From the tool's definition Tool name 'reverse_geocode_svy21' indicates a geocoding operation that converts coordinates to location information. The 'reverse' prefix and 'geocode' verb imply data retrieval without modification.
Attacks that exploit this kind of access
reverse_geocode_svy21. It is categorised as a Read tool in the OneMap MCP Server MCP Server, which means it retrieves data without modifying state.
Register the OneMap MCP Server MCP server in PolicyLayer and add a rule for reverse_geocode_svy21: 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 OneMap MCP Server. Nothing to install.
reverse_geocode_svy21 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 reverse_geocode_svy21 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 reverse_geocode_svy21. 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.
reverse_geocode_svy21 is provided by the OneMap MCP Server MCP server (linzele/mcp-onemap). 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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