List accessible tables for a database and optional schema.
AI agents call list_tables to retrieve information from MSSQL 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 metadata about table structure and availability without creating, modifying, deleting, or executing any code. It is a pure information retrieval operation with no side effects, fitting squarely within the Read category. The severity is low because listing tables poses minimal risk—it exposes schema structure but cannot alter data or trigger external operations.
From the tool's definition Tool name 'list_tables' and description 'List accessible tables for a database and optional schema' indicate a query/enumeration operation with no data modification or execution capability.
Attacks that exploit this kind of access
List accessible tables for a database and optional schema. It is categorised as a Read tool in the MSSQL MCP Server MCP Server, which means it retrieves data without modifying state.
Register the MSSQL MCP Server MCP server in PolicyLayer and add a rule for list_tables: 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 MSSQL MCP Server. Nothing to install.
list_tables 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 list_tables 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 list_tables. 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.
list_tables is provided by the MSSQL MCP Server MCP server (mortada7-11/mssql-mcpo-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.
Teams ship this data inside their own products. See what a licence covers →