AI agents call list_collections 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.
The name 'list_collections' strongly suggests a query operation that retrieves or lists existing collections. Without a description indicating side effects, parameter execution capability, or data modification, this is classified as Read. Low confidence due to empty description, but the semantic meaning of 'list' is reliably indicative of read-only retrieval.
From the tool's definition Tool name 'list_collections' indicates retrieval/enumeration of collections without modification. No description provided to suggest destructive, write, or execute operations.
Documented attack patterns abuse exactly the kind of access list_collections 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 list_collections:
{
"version": "1",
"default": "deny",
"tools": {
"list_collections": {}
}
}list_collections is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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list_collections. 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 list_collections: 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.
list_collections 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 list_collections 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 list_collections. 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.
list_collections 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.