AI agents call get_current_schema to retrieve information from Dm without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only retrieves and returns information about the current schema configuration and permitted schemas. It performs no data modification, deletion, code execution, or financial operations. The retrieval of configuration metadata poses minimal risk.
From the tool's definition Tool name 'get_current_schema' and description 'retrieves the current configured database SCHEMA and list of allowed SCHEMAs' indicate a read-only query operation with no side effects.
Attacks that exploit this kind of access
获取当前配置的数据库的SCHEMA及允许的SCHEMA列表. It is categorised as a Read tool in the Dm MCP Server, which means it retrieves data without modifying state.
Register the Dm MCP server in PolicyLayer and add a rule for get_current_schema: 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 Dm. Nothing to install.
get_current_schema 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_current_schema 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_current_schema. 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_current_schema is provided by the Dm MCP server (tgich/dm_mcp_server). 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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