update_phone_number

Update agent bindings and settings for a phone number. WHEN TO USE: - To bind an agent to a phone number for outbound/inbound calls - To fix

SERVERFreshdesk SOURCE@mindstone-engineering/mcp-server-freshdesk

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/freshdesk/update-phone-number.md

WHAT IT DOES

What update_phone_number does on Freshdesk

AI agents use update_phone_number to create or update resources in Freshdesk, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Freshdesk environment.

RISK

Why update_phone_number is rated Medium

This tool creates or modifies settings and bindings, which is a Write operation. The severity is medium because misconfiguration could disrupt communications (binding wrong agents to phone numbers) but is reversible through subsequent updates.

From the tool's definition Tool name is 'update_phone_number' and description states 'Update agent bindings and settings for a phone number' — this modifies configuration data (agent bindings and settings) reversibly without deleting or destroying information.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs update_phone_number 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 update_phone_number, this is the rule to start with:

update_phone_number Rate-limited

update_phone_number stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "update_phone_number": {
      "limits": [
        {
          "counter": "update_phone_number_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Freshdesk, apply this rule, and every update_phone_number call is checked against it from then on.

FAQ

Questions about update_phone_number

What does the update_phone_number tool do? +

Update agent bindings and settings for a phone number. WHEN TO USE: - To bind an agent to a phone number for outbound/inbound calls - To fix. It is categorised as a Write tool in the Freshdesk MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on update_phone_number? +

Register the Freshdesk MCP server in PolicyLayer and add a rule for update_phone_number: 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.

What risk level is update_phone_number? +

update_phone_number is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit update_phone_number? +

Yes. Add a rate_limit block to the update_phone_number 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.

How do I block update_phone_number completely? +

Set action: deny in the PolicyLayer policy for update_phone_number. 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.

What MCP server provides update_phone_number? +

update_phone_number 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.

KEEP EXPLORING

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