Search for CSS properties by name or description.
AI agents call search_properties to retrieve information from CSS MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only retrieves data about CSS properties without any side effects. It does not create, modify, delete, or execute operations. It falls squarely under the Read category as a search/lookup function. The severity is low because misuse would only result in retrieving unwanted information with no impact on data integrity or system state.
From the tool's definition Tool performs a 'Search for CSS properties by name or description' - a pure query operation with no modification, deletion, or execution of code. It retrieves and returns information about CSS properties from a static reference database.
Attacks that exploit this kind of access
Search for CSS properties by name or description. It is categorised as a Read tool in the CSS MCP Server MCP Server, which means it retrieves data without modifying state.
Register the CSS MCP Server MCP server in PolicyLayer and add a rule for search_properties: 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 CSS MCP Server. Nothing to install.
search_properties 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 search_properties 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 search_properties. 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.
search_properties is provided by the CSS MCP Server MCP server (lesleslie/css-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
search_properties is one line of CSS MCP Server'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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