obdiag 集群信息查询功能，返回支持的指令列表 :param cluster_name: 集群配置文件名前缀，可选。如 ob_test 表示使用 ~/.obdiag/ob_test.yml。不传则使用默认 config.yml :return: 支持的指令列表
AI agents call obdiag_display_list 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 is a read-only diagnostic tool that retrieves metadata about available OceanBase diagnostic commands. It takes an optional cluster configuration parameter but only returns information about what commands are supported. There are no side effects, data modifications, deletions, code execution, or financial operations.
From the tool's definition Tool name 'obdiag_display_list' and description state it 'returns supported command list' (返回支持的指令列表). The function queries and displays available diagnostic commands without modifying or executing operations.
Documented attack patterns abuse exactly the kind of access obdiag_display_list 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 obdiag_display_list:
{
"version": "1",
"default": "deny",
"tools": {
"obdiag_display_list": {}
}
}obdiag_display_list is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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obdiag 集群信息查询功能，返回支持的指令列表 :param cluster_name: 集群配置文件名前缀，可选。如 ob_test 表示使用 ~/.obdiag/ob_test.yml。不传则使用默认 config.yml :return: 支持的指令列表. 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 obdiag_display_list: 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.
obdiag_display_list 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 obdiag_display_list 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 obdiag_display_list. 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.
obdiag_display_list 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.