List saved patterns
AI agents call list to retrieve information from Filopastry 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 saved musical patterns from the Filopastry music environment. It has no capacity to modify, delete, or execute operations—it only queries and presents information. The blast radius of misuse is minimal; listing patterns poses no risk to system integrity, financial impact, or destructive action.
From the tool's definition Tool name 'list' with description 'List saved patterns' indicates retrieval of existing data without modification, deletion, or side effects. The verb 'list' is characteristic of a Read operation (search, list, get, fetch).
Attacks that exploit this kind of access
List saved patterns. It is categorised as a Read tool in the Filopastry MCP Server, which means it retrieves data without modifying state.
Register the Filopastry MCP server in PolicyLayer and add a rule for list: 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 Filopastry. Nothing to install.
list 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 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. 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 is provided by the Filopastry MCP server (youwenshao/filopastry). 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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