AI agents call mcp_registry_status 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 status information about a registry (availability and performance metrics). It performs no modifications, deletions, code execution, or financial operations. The 'check' verb and 'status' terminology confirm it is a read-only diagnostic query. The broader server context (managing MCP server aggregation) and sibling tools (list, info, search) reinforce this is a data retrieval function.
From the tool's definition Tool name 'mcp_registry_status' and description 'Check registry availability and performance' indicate a monitoring/status check operation that queries state without modifying data.
Documented attack patterns abuse exactly the kind of access mcp_registry_status 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_status:
{
"version": "1",
"default": "deny",
"tools": {
"mcp_registry_status": {}
}
}mcp_registry_status is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Check registry availability and performance. 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_status: 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_status 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_status 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_status. 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_status 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.
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17 1MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.