AI agents call mcp_registry_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 retrieves information from a registry without modifying, executing, or deleting anything. It is a straightforward informational query. Severity is low because registry information retrieval poses minimal risk—it does not execute code, modify state, or cause irreversible changes.
From the tool's definition Tool name 'mcp_registry_info' and description 'Get detailed registry information' indicate a data retrieval operation.
Documented attack patterns abuse exactly the kind of access mcp_registry_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_registry_info:
{
"version": "1",
"default": "deny",
"tools": {
"mcp_registry_info": {}
}
}mcp_registry_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 registry information. 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_registry_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_registry_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_registry_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_registry_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_registry_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.