Get all server nodes from oceanbase. You need to be sys tenant to get all server nodes.
AI agents call get_all_server_nodes to retrieve information from Mcp Oceanbase without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves server node information from an OceanBase database cluster. It performs a read-only operation that returns data without creating, modifying, deleting, or executing arbitrary operations. The blast radius of misuse is limited to information disclosure about the cluster topology, which is low severity.
From the tool's definition Tool name 'get_all_server_nodes' and description 'Get all server nodes from oceanbase' indicate a retrieval operation with no modification or side effects. The requirement to be sys tenant is an access control constraint, not a destructive or write operation.
Documented attack patterns abuse exactly the kind of access get_all_server_nodes gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Oceanbase, and nothing reaches the server without passing your rules. This is the rule we recommend for get_all_server_nodes:
{
"version": "1",
"default": "deny",
"tools": {
"get_all_server_nodes": {}
}
}get_all_server_nodes is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get all server nodes from oceanbase. You need to be sys tenant to get all server nodes. It is categorised as a Read tool in the Mcp Oceanbase MCP Server, which means it retrieves data without modifying state.
Register the Mcp Oceanbase MCP server in PolicyLayer and add a rule for get_all_server_nodes: 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 Mcp Oceanbase. Nothing to install.
get_all_server_nodes 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_all_server_nodes 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_all_server_nodes. 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_all_server_nodes is provided by the Mcp Oceanbase MCP server (oceanbase/awesome-oceanbase-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 134 Mcp Oceanbase tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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134 Mcp Oceanbase tools catalogued and risk-classified — across an index of 42,500+ MCP servers.