go_test · Mcp Golang MCP: Risk & Policy

WHAT IT DOES

What go_test does on Mcp Golang

AI agents invoke go_test to trigger actions in Mcp Golang. 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 go_test needs a policy

Running tests executes arbitrary code in the Go test suite. An AI agent misusing this tool could trigger test code with side effects, resource consumption, or network calls. The empty description lowers confidence, but the tool name and server context strongly suggest code execution. Severity is high because executing arbitrary test code can have broad side effects depending on what the tests do.

From the tool's definition Tool name 'go_test' on a server that 'runs Go language tools' including analyze, fix, and test operations. The description is empty, but 'go test' in Go conventionally executes test code.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

go_test Rate-limited

go_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": {
    "go_test": {
      "limits": [
        {
          "counter": "go_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 Golang, so you can run agents against it safely.

FAQ

Questions about go_test

What does the go_test tool do? +

go_test. It is categorised as a Execute tool in the Mcp Golang MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on go_test? +

Register the Mcp Golang MCP server in PolicyLayer and add a rule for go_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 Golang. Nothing to install.

What risk level is go_test? +

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

Can I rate-limit go_test? +

Yes. Add a rate_limit block to the go_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 go_test completely? +

Set action: deny in the PolicyLayer policy for go_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 go_test? +

go_test is provided by the Mcp Golang MCP server (rethunk-ai/rethunk-mcp-go). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.