Get table schema information
AI agents call timescale_describe_table to retrieve information from TigerData-mcp-server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool retrieves schema information (columns, types, constraints) from a table, which is a read-only operation with no side effects. No data is created, modified, deleted, or executed. The blast radius is minimal—schema inspection cannot harm data integrity or cause unintended effects.
From the tool's definition Tool name 'timescale_describe_table' and description 'Get table schema information' indicate retrieval of metadata without modification.
Attacks that exploit this kind of access
Get table schema information. It is categorised as a Read tool in the TigerData-mcp-server MCP Server, which means it retrieves data without modifying state.
Register the TigerData-mcp-server MCP server in PolicyLayer and add a rule for timescale_describe_table: 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 TigerData-mcp-server. Nothing to install.
timescale_describe_table 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 timescale_describe_table 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 timescale_describe_table. 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.
timescale_describe_table is provided by the TigerData-mcp-server MCP server (thesurfingcoder/tigerdata-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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