AI agents call library_get_libraries to retrieve information from Propresenter without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns library configuration data without modifying, executing, or deleting anything. It is a straightforward read operation with minimal security risk - the only concern would be information disclosure if library contents are sensitive, but listing library names/metadata is typically low-impact.
From the tool's definition Tool name 'library_get_libraries' and description 'Get a list of all configured libraries' indicate a retrieval operation with no side effects.
Documented attack patterns abuse exactly the kind of access library_get_libraries gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Propresenter, and nothing reaches the server without passing your rules. This is the rule we recommend for library_get_libraries:
{
"version": "1",
"default": "deny",
"tools": {
"library_get_libraries": {}
}
}library_get_libraries is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get a list of all configured libraries. It is categorised as a Read tool in the Propresenter MCP Server, which means it retrieves data without modifying state.
Register the Propresenter MCP server in PolicyLayer and add a rule for library_get_libraries: 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 Propresenter. Nothing to install.
library_get_libraries 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 library_get_libraries 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 library_get_libraries. 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.
library_get_libraries is provided by the Propresenter MCP server (@alxpark/propresenter-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Propresenter, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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177 Propresenter tools catalogued and risk-classified — across an index of 43,000+ MCP servers.