AI agents call list_inclusion_filters to retrieve information from Mcp Base without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool name indicates it retrieves or lists inclusion filters, a read-only operation. No modification, deletion, or execution of code is implied. The sibling tools (health_check, list_folder, list_root_paths) are all read operations, reinforcing this classification. Even without a description, the naming pattern clearly indicates data retrieval with no side effects.
From the tool's definition Tool name 'list_inclusion_filters' implies retrieval of a filter list with no side effects. The 'list_' prefix strongly suggests a read operation. Description is empty, which reduces confidence slightly.
Attacks that exploit this kind of access
list_inclusion_filters. It is categorised as a Read tool in the Mcp Base MCP Server, which means it retrieves data without modifying state.
Register the Mcp Base MCP server in PolicyLayer and add a rule for list_inclusion_filters: 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 Mcp Base. Nothing to install.
list_inclusion_filters 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_inclusion_filters 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_inclusion_filters. 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_inclusion_filters is provided by the Mcp Base MCP server (sesopenko/mcp-filesystem-readonly). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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