list_phone_numbers
List all phone numbers in your Retell account with their agent bindings. WHEN TO USE: - Before create_phone_call, to find available from_numbers - To check which agents are bound to which numbers - To verify outbound agent configuration TIP: The phone_number field (E.164 format) is what you pass ...
This record as markdown: /tools/freshdesk/list-phone-numbers.md
What list_phone_numbers does on Freshdesk
AI agents call list_phone_numbers to retrieve information from Freshdesk without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why list_phone_numbers is rated Low
This tool retrieves and displays configuration data (phone numbers and their associated agent bindings) without creating, modifying, deleting, or executing any operations. It is a pure data retrieval function used for inspection and verification purposes before other operations.
From the tool's definition Tool name 'list_phone_numbers' and description 'List all phone numbers in your Retell account with their agent bindings' indicate a retrieval operation.
Attacks that exploit this kind of access
The rule that runs list_phone_numbers safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Freshdesk, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For list_phone_numbers, this is the rule to start with:
list_phone_numbers is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Freshdesk, apply this rule, and every list_phone_numbers call is checked against it from then on.
Questions about list_phone_numbers
List all phone numbers in your Retell account with their agent bindings. WHEN TO USE: - Before create_phone_call, to find available from_numbers - To check which agents are bound to which numbers - To verify outbound agent configuration TIP: The phone_number field (E.164 format) is what you pass as from_number in create_phone_call. The outbound_agents array shows which agent(s) are bound for outbound calls from this number. Check each outbound agent. It is categorised as a Read tool in the Freshdesk MCP Server, which means it retrieves data without modifying state.
Register the Freshdesk 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 Freshdesk. 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 Freshdesk MCP server (@mindstone-engineering/mcp-server-freshdesk). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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