list_active_sessions
AI agents call list_active_sessions to retrieve information from Universal AI Chat MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool appears to enumerate or retrieve active session information from the collaborative AI platform. This is a read operation—it retrieves data with no side effects. The empty description lowers confidence slightly, but the tool name and context strongly suggest passive data retrieval rather than mutation, execution, or destructive action.
From the tool's definition Tool name 'list_active_sessions' indicates a query/list operation that retrieves session data without modification.
Attacks that exploit this kind of access
list_active_sessions. It is categorised as a Read tool in the Universal AI Chat MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Universal AI Chat MCP Server MCP server in PolicyLayer and add a rule for list_active_sessions: 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 Universal AI Chat MCP Server. Nothing to install.
list_active_sessions 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 list_active_sessions 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 list_active_sessions. 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.
list_active_sessions is provided by the Universal AI Chat MCP Server MCP server (marc-shade/universal-ai-chat). 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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