List all phone numbers associated with the ElevenLabs account
AI agents call list_phone_numbers to retrieve information from Ableton MCP Extended without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves phone numbers from an ElevenLabs account, which is a Read operation (query/fetch with no side effects). However, the severity is medium rather than low because phone numbers are sensitive personally identifiable information (PII); exposure could enable social engineering, harassment, or identity theft.
From the tool's definition Tool name and description: 'list_phone_numbers' and 'List all phone numbers associated with the ElevenLabs account'. The verb 'list' indicates data retrieval with no modification.
Documented attack patterns abuse exactly the kind of access list_phone_numbers gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Ableton MCP Extended, and nothing reaches the server without passing your rules. This is the rule we recommend for list_phone_numbers:
{
"version": "1",
"default": "deny",
"tools": {
"list_phone_numbers": {}
}
}list_phone_numbers is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List all phone numbers associated with the ElevenLabs account. It is categorised as a Read tool in the Ableton MCP Extended MCP Server, which means it retrieves data without modifying state.
Register the Ableton MCP Extended MCP server in PolicyLayer and add a rule for list_phone_numbers: 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 MCP Extended. Nothing to install.
list_phone_numbers 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_phone_numbers 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_phone_numbers. 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_phone_numbers is provided by the Ableton MCP Extended MCP server (thomas0barand/ableton-mcp-expanded). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Ableton MCP Extended, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
38 Ableton MCP Extended tools catalogued and risk-classified — across an index of 43,000+ MCP servers.