AI agents call mcp_info to retrieve information from 1MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns information about an MCP server configuration or status. It performs a read-only lookup operation without modifying, executing, deleting, or creating any resources. The potential blast radius is minimal—an AI agent obtaining server information poses no direct risk unless that information itself is sensitive, but the operation itself is non-destructive and reversible.
From the tool's definition Tool name 'mcp_info' and description 'Get detailed information about a specific MCP server' indicate a retrieval operation with no side effects.
Documented attack patterns abuse exactly the kind of access mcp_info gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and 1MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for mcp_info:
{
"version": "1",
"default": "deny",
"tools": {
"mcp_info": {}
}
}mcp_info is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Get detailed information about a specific MCP server. It is categorised as a Read tool in the 1MCP Server MCP Server, which means it retrieves data without modifying state.
Register the 1MCP Server MCP server in PolicyLayer and add a rule for mcp_info: 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 1MCP Server. Nothing to install.
mcp_info 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 mcp_info 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 mcp_info. 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.
mcp_info is provided by the 1MCP Server MCP server (1mcp-app/agent). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 17 1MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
17 1MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.