AI agents call scan_tool_definition to retrieve information from Pypi:asqav without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool appears to retrieve or analyze metadata about tool definitions as part of the governance framework. While the empty description reduces confidence, the naming pattern and server context (audit trails, compliance reporting) indicate this is a Read operation that queries tool definitions rather than modifying or executing them.
From the tool's definition Tool name 'scan_tool_definition' suggests inspection/analysis of tool definitions without modification. The empty description limits confidence, but 'scan' typically indicates a read-only query operation.
Documented attack patterns abuse exactly the kind of access scan_tool_definition gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Pypi:asqav, and nothing reaches the server without passing your rules. This is the rule we recommend for scan_tool_definition:
{
"version": "1",
"default": "deny",
"tools": {
"scan_tool_definition": {}
}
}scan_tool_definition is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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scan_tool_definition. It is categorised as a Read tool in the Pypi:asqav MCP Server, which means it retrieves data without modifying state.
Register the Pypi:asqav MCP server in PolicyLayer and add a rule for scan_tool_definition: 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 Pypi:asqav. Nothing to install.
scan_tool_definition 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 scan_tool_definition 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 scan_tool_definition. 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.
scan_tool_definition is provided by the Pypi:asqav MCP server (jagmarques/asqav-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Pypi:asqav, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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15 Pypi:asqav tools catalogued and risk-classified — across an index of 43,000+ MCP servers.