sf_create_visualforce_page
Creates a Visualforce page in the Salesforce org via the Metadata API. Provide the page API name, label, and Visualforce markup content (must include an <apex:page> tag). Optionally specify a standard controller, extensions, and whether to show the header/sidebar. The page is deployed immediately...
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What sf_create_visualforce_page does on Salesforce Metadata Mcp
AI agents use sf_create_visualforce_page to create or update resources in Salesforce Metadata Mcp, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Salesforce Metadata Mcp environment.
Why sf_create_visualforce_page is rated Medium
This tool creates new Visualforce pages in a Salesforce org, which are executable UI components with access to org data and Apex logic. While creation is reversible (pages can be deleted), the tool enables arbitrary code deployment to a production system, potentially allowing injection of malicious UI components, data exfiltration, or privilege escalation through custom Apex controllers/extensions.
From the tool's definition Tool description explicitly states it 'Creates a Visualforce page' and 'The page is deployed immediately and accessible', indicating persistent creation of application code/content.
Attacks that exploit this kind of access
The rule that runs sf_create_visualforce_page safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Salesforce Metadata Mcp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For sf_create_visualforce_page, this is the rule to start with:
sf_create_visualforce_page 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 Salesforce Metadata Mcp, apply this rule, and every sf_create_visualforce_page call is checked against it from then on.
Questions about sf_create_visualforce_page
Creates a Visualforce page in the Salesforce org via the Metadata API. Provide the page API name, label, and Visualforce markup content (must include an <apex:page> tag). Optionally specify a standard controller, extensions, and whether to show the header/sidebar. The page is deployed immediately and accessible at /apex/PageName. It is categorised as a Write tool in the Salesforce Metadata Mcp MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Salesforce Metadata MCP server in PolicyLayer and add a rule for sf_create_visualforce_page: 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 Salesforce Metadata Mcp. Nothing to install.
sf_create_visualforce_page 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 sf_create_visualforce_page 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 sf_create_visualforce_page. 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.
sf_create_visualforce_page is provided by the Salesforce Metadata MCP server (salesforce-metadata-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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