Export database schema information in various formats
AI agents call export-schema to retrieve information from Simple Snowflake MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool exports schema information, which is a read/retrieval operation. It queries and returns metadata about database structure without modifying any data. Severity is low as it only exposes structural metadata, though it could reveal sensitive schema details to unauthorized parties.
From the tool's definition Export database schema information in various formats
Documented attack patterns abuse exactly the kind of access export-schema gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Simple Snowflake MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for export-schema:
{
"version": "1",
"default": "deny",
"tools": {
"export-schema": {}
}
}export-schema is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Export database schema information in various formats. It is categorised as a Read tool in the Simple Snowflake MCP MCP Server, which means it retrieves data without modifying state.
Register the Simple Snowflake MCP server in PolicyLayer and add a rule for export-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 Simple Snowflake MCP. Nothing to install.
export-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 export-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 export-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.
export-schema is provided by the Simple Snowflake MCP server (yannbrrd/simple_snowflake_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Simple Snowflake MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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8 Simple Snowflake MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.