get_theme_info
AI agents call get_theme_info 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.
The tool appears to query and retrieve metadata about OneMap themes (thematic layers), which is a read-only operation with no side effects. Even if misused by an AI agent, it would only retrieve data without modifying, deleting, or executing operations on external systems.
From the tool's definition Tool name 'get_theme_info' suggests retrieval of information about themes. Sibling tools include 'get_all_themes_info', 'get_all_planning_areas', and coordinate conversion functions, all of which are read-only queries.
Attacks that exploit this kind of access
get_theme_info. 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 get_theme_info: 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.
get_theme_info 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 get_theme_info 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 get_theme_info. 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.
get_theme_info 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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