AI agents call get_promotion_aliases to retrieve information from Vercel MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves promotion alias information from the Vercel project configuration. No data is created, modified, deleted, or executed—it only queries existing data. The blast radius of misuse is minimal since read operations cannot directly damage systems or configurations. Classified as Read/low severity.
From the tool's definition Tool name 'get_promotion_aliases' and description 'Get promotion aliases' indicate a retrieval operation with no side effects. The verb 'get' and context of fetching alias information from a Vercel project confirms read-only behavior.
Documented attack patterns abuse exactly the kind of access get_promotion_aliases gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Vercel MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_promotion_aliases:
{
"version": "1",
"default": "deny",
"tools": {
"get_promotion_aliases": {}
}
}get_promotion_aliases is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get promotion aliases. It is categorised as a Read tool in the Vercel MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Vercel MCP Server MCP server in PolicyLayer and add a rule for get_promotion_aliases: 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 Vercel MCP Server. Nothing to install.
get_promotion_aliases 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 get_promotion_aliases 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 get_promotion_aliases. 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.
get_promotion_aliases is provided by the Vercel MCP Server MCP server (quegenx/vercel-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 154 Vercel MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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154 Vercel MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.