sessions_assign_agents · CyPerf MCP Server MCP

WHAT IT DOES

What sessions_assign_agents does on CyPerf MCP Server

AI agents use sessions_assign_agents to create or update resources in CyPerf MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your CyPerf MCP Server environment.

WHY IT NEEDS A POLICY

Why sessions_assign_agents needs a policy

The name suggests assigning agents to sessions, which is a Write operation (modifying session configuration). However, the description is empty, lowering confidence. Based on naming conventions and sibling tools, this likely modifies session state by associating agents with test sessions.

From the tool's definition Tool name 'sessions_assign_agents' and sibling tools context (agents_reserve, agents_release suggest resource management). Description is empty.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

sessions_assign_agents Rate-limited

sessions_assign_agents stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "sessions_assign_agents": {
      "limits": [
        {
          "counter": "sessions_assign_agents_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches CyPerf MCP Server, so you can run agents against it safely.

FAQ

Questions about sessions_assign_agents

What does the sessions_assign_agents tool do? +

sessions_assign_agents. It is categorised as a Write tool in the CyPerf MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on sessions_assign_agents? +

Register the CyPerf MCP Server MCP server in PolicyLayer and add a rule for sessions_assign_agents: 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 CyPerf MCP Server. Nothing to install.

What risk level is sessions_assign_agents? +

sessions_assign_agents is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit sessions_assign_agents? +

Yes. Add a rate_limit block to the sessions_assign_agents 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.

How do I block sessions_assign_agents completely? +

Set action: deny in the PolicyLayer policy for sessions_assign_agents. 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.

What MCP server provides sessions_assign_agents? +

sessions_assign_agents is provided by the CyPerf MCP Server MCP server (keysight/cyperf-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.