Get schema information for tables
AI agents call get_table_schema to retrieve information from Multi-Database SQL MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves database schema metadata (table structure, columns, data types, constraints, etc.) with no side effects. It is a read-only operation that queries the database's information schema or equivalent system tables. While the server overall includes Execute-level tools (execute_query), this specific tool is purely informational and poses minimal risk if misused by an AI agent.
From the tool's definition Tool name 'get_table_schema' and description 'Get schema information for tables' indicate retrieval of metadata without modification or execution of arbitrary operations.
Attacks that exploit this kind of access
Get schema information for tables. It is categorised as a Read tool in the Multi-Database SQL MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Multi-Database SQL MCP Server MCP server in PolicyLayer and add a rule for get_table_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 Multi-Database SQL MCP Server. Nothing to install.
get_table_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_table_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_table_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_table_schema is provided by the Multi-Database SQL MCP Server MCP server (soumya7681/sql-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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