AI agents call get_access_group 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 access group information without modifying, deleting, or executing any operations. It is a straightforward read operation that queries existing data. The low severity reflects minimal risk—unauthorized reads of access group metadata present limited blast radius compared to tools that modify configurations or delete resources.
From the tool's definition Tool name is 'get_access_group' and description explicitly states 'Read an access group', indicating a retrieval operation with no side effects.
Documented attack patterns abuse exactly the kind of access get_access_group 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_access_group:
{
"version": "1",
"default": "deny",
"tools": {
"get_access_group": {}
}
}get_access_group is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Read an access group. 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_access_group: 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_access_group 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_access_group 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_access_group. 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_access_group 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.