List all resource types in the PullNexus registry with counts.
AI agents call pullnexus_types to retrieve information from PullNexus without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a simple enumeration of resource types with their counts—a query operation with no capability to modify, delete, execute, or move resources. It has minimal blast radius if misused by an AI agent, as it only exposes metadata about available resource categories.
From the tool's definition Tool description states 'List all resource types in the PullNexus registry with counts.' The verb 'List' indicates a read-only operation that retrieves and displays data without modification or side effects.
Documented attack patterns abuse exactly the kind of access pullnexus_types gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and PullNexus, and nothing reaches the server without passing your rules. This is the rule we recommend for pullnexus_types:
{
"version": "1",
"default": "deny",
"tools": {
"pullnexus_types": {}
}
}pullnexus_types 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 resource types in the PullNexus registry with counts. It is categorised as a Read tool in the PullNexus MCP Server, which means it retrieves data without modifying state.
Register the PullNexus MCP server in PolicyLayer and add a rule for pullnexus_types: 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 PullNexus. Nothing to install.
pullnexus_types 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 pullnexus_types 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 pullnexus_types. 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.
pullnexus_types is provided by the PullNexus MCP server (mrwillist/pullnexus). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from PullNexus, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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11 PullNexus tools catalogued and risk-classified — across an index of 43,000+ MCP servers.