Get activity stream for a record (all changes, comments)
AI agents call activity_stream 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 and queries existing audit trail and comment data without creating, modifying, deleting, or executing any operations. It has no side effects and poses minimal security risk unless the activity stream itself contains highly sensitive information, but the risk is inherent to data sensitivity rather than the tool's operation.
From the tool's definition Tool name 'activity_stream' and description 'Get activity stream for a record (all changes, comments)' indicate data retrieval only. The verb 'Get' and absence of any modification language confirm read-only access to historical audit/activity logs.
Attacks that exploit this kind of access
Get activity stream for a record (all changes, comments). 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 activity_stream: 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.
activity_stream 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 activity_stream 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 activity_stream. 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.
activity_stream 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.
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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