获取存储桶策略
AI agents call get_bucket_policy 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 retrieves bucket access policies for informational purposes. It performs a read-only operation with no side effects, no data modification, and no destructive actions. Even in a misuse scenario, an AI agent could only access policy information already stored in the system, with minimal blast radius.
From the tool's definition Tool name is 'get_bucket_policy' and description translates to 'Get bucket policy'. The 'get' prefix and retrieval nature indicate this tool queries and retrieves existing policy data without modifying it.
Attacks that exploit this kind of access
获取存储桶策略. 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 get_bucket_policy: 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.
get_bucket_policy 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_bucket_policy 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_bucket_policy. 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_bucket_policy 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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