clerk.update_phone_number
Update a Clerk phone number by id. Call clerk.get_connected_accounts first. Pass clerk_instance_id to target a specific connection, or omit it to use the default account. Returns the updated phone number summary. Cost = 8 tokens.
This record as markdown: /tools/io-github-vee3io-vee3/clerk.update-phone-number.md
What clerk.update_phone_number does on Vee3
AI agents use clerk.update_phone_number to create or update resources in Vee3, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Vee3 environment.
| Parameter | Type | Required | Description |
|---|---|---|---|
primary | object | — | Whether this should be the user's primary phone number. |
verified | object | — | Whether the phone number should be marked verified. |
phone_number_id | string | Yes | Clerk phone number id (idn_... or phn_...) to retrieve or modify. |
clerk_instance_id | object | — | Clerk instance id (ins_...) from clerk.get_connected_accounts. Omit to use the default connected account. |
reserved_for_second_factor | object | — | Whether to reserve this number for multi-factor authentication. |
Parameters from the server's own tool schema.
Why clerk.update_phone_number is rated Medium
Modifies user phone number data reversibly via API; moderate blast radius if abused by agent to alter user accounts.
From the tool's definition Update a Clerk phone number by id. Returns the updated phone number summary.
Attacks that exploit this kind of access
The rule that runs clerk.update_phone_number safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Vee3, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For clerk.update_phone_number, this is the rule to start with:
clerk.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.
The button opens the PolicyLayer dashboard: create your workspace, connect Vee3, apply this rule, and every clerk.update_phone_number call is checked against it from then on.
Questions about clerk.update_phone_number
Update a Clerk phone number by id. Call clerk.get_connected_accounts first. Pass clerk_instance_id to target a specific connection, or omit it to use the default account. Returns the updated phone number summary. Cost = 8 tokens. It is categorised as a Write tool in the Vee3 MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
clerk.update_phone_number accepts 5 parameters: primary, verified, phone_number_id, clerk_instance_id, reserved_for_second_factor. Required: phone_number_id. The full parameter table on this page comes from the server's own tool schema.
Register the Vee3 MCP server in PolicyLayer and add a rule for clerk.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 Vee3. Nothing to install.
clerk.update_phone_number is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the clerk.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.
Set action: deny in the PolicyLayer policy for clerk.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.
clerk.update_phone_number is provided by the Vee3 MCP server (https://mcp.vee3.io/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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