Get tasks associated with a change request
AI agents call changes_tasks to retrieve information from ServiceNow 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 task information linked to a change request. The verb 'Get' and the absence of any mutative language (create, update, delete, execute) clearly indicate a read-only operation. Even though ServiceNow changes can have governance implications, merely querying associated tasks poses minimal risk—no data is modified, deleted, or executed.
From the tool's definition Tool name 'changes_tasks' and description 'Get tasks associated with a change request' indicate a retrieval operation with no modification or side effects.
Attacks that exploit this kind of access
Get tasks associated with a change request. It is categorised as a Read tool in the ServiceNow MCP Server MCP Server, which means it retrieves data without modifying state.
Register the ServiceNow MCP Server MCP server in PolicyLayer and add a rule for changes_tasks: 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 ServiceNow MCP Server. Nothing to install.
changes_tasks 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 changes_tasks 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 changes_tasks. 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.
changes_tasks is provided by the ServiceNow MCP Server MCP server (schwarztim/servicenow-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
changes_tasks is one line of ServiceNow MCP Server'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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