swarm_run_test · Mcp Swarm MCP: Risk & Policy

WHAT IT DOES

What swarm_run_test does on Mcp Swarm

AI agents invoke swarm_run_test to trigger actions in Mcp Swarm. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why swarm_run_test needs a policy

Running test suites involves executing code whose behavior depends on test content and configuration. While tests are typically intended for validation rather than production changes, they execute arbitrary code that could have side effects (file I/O, network calls, environment modifications). This makes it Execute-category.

From the tool's definition Tool name 'swarm_run_test' and description '运行测试套件' (meaning 'run test suite') indicate execution of arbitrary test commands/scripts.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

swarm_run_test Rate-limited

swarm_run_test stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "swarm_run_test": {
      "limits": [
        {
          "counter": "swarm_run_test_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about swarm_run_test

What does the swarm_run_test tool do? +

运行测试套件。. It is categorised as a Execute tool in the Mcp Swarm MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on swarm_run_test? +

Register the Mcp Swarm MCP server in PolicyLayer and add a rule for swarm_run_test: 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 Mcp Swarm. Nothing to install.

What risk level is swarm_run_test? +

swarm_run_test is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit swarm_run_test? +

Yes. Add a rate_limit block to the swarm_run_test 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 swarm_run_test completely? +

Set action: deny in the PolicyLayer policy for swarm_run_test. 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 swarm_run_test? +

swarm_run_test is provided by the Mcp Swarm MCP server (moselu/mcp-swarm). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.