List all active OpenClaude sessions.
AI agents call list_sessions to retrieve information from OpenClaude MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns information about active sessions without creating, modifying, deleting, or executing anything. It has no side effects and falls squarely into the Read category. Severity is low because listing sessions poses minimal risk even if misused by an agent — it only exposes metadata about existing sessions, not sensitive data or destructive capabilities.
From the tool's definition Tool name is 'list_sessions' and description states 'List all active OpenClaude sessions' — a pure retrieval operation with no modification, deletion, or execution capability.
Attacks that exploit this kind of access
List all active OpenClaude sessions. It is categorised as a Read tool in the OpenClaude MCP Server MCP Server, which means it retrieves data without modifying state.
Register the OpenClaude MCP Server MCP server in PolicyLayer and add a rule for list_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 OpenClaude MCP Server. Nothing to install.
list_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_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_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_sessions is provided by the OpenClaude MCP Server MCP server (sandraschi/openclaude-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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