AI agents call snow_query_table to retrieve information from Serac without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves data from ServiceNow tables without creating, modifying, or deleting records. It is a read-only operation. Severity is medium rather than low because querying 'any' ServiceNow table could expose sensitive enterprise data (employee records, financial data, configurations) depending on access controls and what an AI agent might query.
From the tool's definition Tool description states 'Query any ServiceNow table with filtering, pagination, and field selection.' The verb 'query' combined with 'returns' indicates data retrieval with no modification capability.
Attacks that exploit this kind of access
Query any ServiceNow table with filtering, pagination, and field selection. Always returns sys_id for each record. It is categorised as a Read tool in the Serac MCP Server, which means it retrieves data without modifying state.
Register the Serac MCP server in PolicyLayer and add a rule for snow_query_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 Serac. Nothing to install.
snow_query_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 snow_query_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 snow_query_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.
snow_query_table is provided by the Serac MCP server (serac-labs/serac). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
snow_query_table is one line of Serac's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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