List all available icon categories with their icon counts
AI agents call list_all_categories to retrieve information from Lucide Icons MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and displays metadata about icon categories. It performs no creation, modification, deletion, or execution of code/commands. The information returned is static reference data. Misuse poses no security risk beyond potential information disclosure of non-sensitive category names and counts.
From the tool's definition Tool description states 'List all available icon categories with their icon counts' — a purely informational retrieval operation with no side effects.
Documented attack patterns abuse exactly the kind of access list_all_categories gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Lucide Icons MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for list_all_categories:
{
"version": "1",
"default": "deny",
"tools": {
"list_all_categories": {}
}
}list_all_categories is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List all available icon categories with their icon counts. It is categorised as a Read tool in the Lucide Icons MCP MCP Server, which means it retrieves data without modifying state.
Register the Lucide Icons MCP server in PolicyLayer and add a rule for list_all_categories: 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 Lucide Icons MCP. Nothing to install.
list_all_categories 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 list_all_categories 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 list_all_categories. 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.
list_all_categories is provided by the Lucide Icons MCP server (seeyangzhi/lucide-icons-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 7 Lucide Icons MCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
7 Lucide Icons MCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.