列出所有存储桶
AI agents call list_buckets to retrieve information from MinIO Storage MCP 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 a list of existing buckets from MinIO storage. It performs no mutations, deletions, or external operations—purely informational retrieval. The minimal severity reflects that bucket names are typically not sensitive, though listing could reveal storage structure. This is a standard Read operation.
From the tool's definition Tool name 'list_buckets' and description '列出所有存储桶' (lists all buckets) indicate a retrieval operation with no data modification or side effects.
Attacks that exploit this kind of access
列出所有存储桶. It is categorised as a Read tool in the MinIO Storage MCP MCP Server, which means it retrieves data without modifying state.
Register the MinIO Storage MCP server in PolicyLayer and add a rule for list_buckets: 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 MinIO Storage MCP. Nothing to install.
list_buckets 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_buckets 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_buckets. 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_buckets is provided by the MinIO Storage MCP server (pickstar-2002/minio-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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