AI agents call snow_discover_data_sources 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 queries and enumerates available data sources (import sets, REST endpoints) in ServiceNow without creating, modifying, deleting, or executing any operations. It is purely exploratory/informational in nature, making it a Read operation with low severity since the blast radius of misuse is limited to exposure of metadata about available integrations.
From the tool's definition Tool name 'snow_discover_data_sources' and description 'Discover available data sources for integration including import sets and REST endpoints' — the verb 'discover' and action of listing/identifying available data sources indicates information retrieval…
Attacks that exploit this kind of access
Discover available data sources for integration including import sets and REST endpoints. 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_discover_data_sources: 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_discover_data_sources 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_discover_data_sources 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_discover_data_sources. 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_discover_data_sources 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_discover_data_sources 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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