Read-only list of MCP resources exposed by the server for clients that do not expose resource discovery natively. Use when the user asks what context URIs are available; returns resource URI, name, description, MIME type, and total count.
AI agents call list_resources to retrieve information from Ableton Mind without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries available resources without side effects. It is purely informational—it lists what context URIs and resources are available to clients. There is no capability to modify, delete, execute, or perform any irreversible action. This is a classic Read operation in the MCP protocol.
From the tool's definition Tool name is 'list_resources' and description explicitly states 'Read-only list of MCP resources' with no mention of modification, deletion, or execution. Returns metadata (URI, name, description, MIME type, count) only.
Attacks that exploit this kind of access
Read-only list of MCP resources exposed by the server for clients that do not expose resource discovery natively. Use when the user asks what context URIs are available; returns resource URI, name, description, MIME type, and total count. It is categorised as a Read tool in the Ableton Mind MCP Server, which means it retrieves data without modifying state.
Register the Ableton Mind MCP server in PolicyLayer and add a rule for list_resources: 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 Ableton Mind. Nothing to install.
list_resources 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_resources 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_resources. 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_resources is provided by the Ableton Mind MCP server (ableton-mind). 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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