modify db instance description.
AI agents use modify_db_instance_description to create or update resources in Alibaba Cloud RDS OpenAPI MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Alibaba Cloud RDS OpenAPI MCP Server environment.
This tool modifies the descriptive metadata of a database instance, which is a Write operation—it creates or modifies data reversibly. The scope is limited to a single instance's description field (typically a non-critical string attribute), not structural changes to the database itself, making this low severity. The operation can be undone by modifying the description again.
From the tool's definition Tool name 'modify_db_instance_description' and description 'modify db instance description' indicate the tool updates metadata (the description field) of an RDS database instance. This is a reversible modification operation.
Documented attack patterns abuse exactly the kind of access modify_db_instance_description gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Alibaba Cloud RDS OpenAPI MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for modify_db_instance_description:
{
"version": "1",
"default": "deny",
"tools": {
"modify_db_instance_description": {
"limits": [
{
"counter": "modify_db_instance_description_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}modify_db_instance_description stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
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modify db instance description. It is categorised as a Write tool in the Alibaba Cloud RDS OpenAPI MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Alibaba Cloud RDS OpenAPI MCP Server MCP server in PolicyLayer and add a rule for modify_db_instance_description: 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 Alibaba Cloud RDS OpenAPI MCP Server. Nothing to install.
modify_db_instance_description is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the modify_db_instance_description 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 modify_db_instance_description. 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.
modify_db_instance_description is provided by the Alibaba Cloud RDS OpenAPI MCP Server MCP server (aliyun/alibabacloud-rds-openapi-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 37 Alibaba Cloud RDS OpenAPI MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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37 Alibaba Cloud RDS OpenAPI MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.