mock_api_server · MCP Software Engineer MCP: Risk & Policy

WHAT IT DOES

What mock_api_server does on MCP Software Engineer

AI agents invoke mock_api_server to trigger actions in MCP Software Engineer. 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 mock_api_server needs a policy

Creating a mock API server involves executing a process that listens on a network port, which constitutes running an external operation. While it is scoped to testing, it spins up a live server process with potential network exposure. It doesn't merely write a config file — it activates a running service, placing it in Execute.

From the tool's definition 'Create a mock API server for testing' — starts/runs a server process

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

mock_api_server Rate-limited

mock_api_server 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": {
    "mock_api_server": {
      "limits": [
        {
          "counter": "mock_api_server_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 Software Engineer, so you can run agents against it safely.

FAQ

Questions about mock_api_server

What does the mock_api_server tool do? +

Create a mock API server for testing. It is categorised as a Execute tool in the MCP Software Engineer MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on mock_api_server? +

Register the MCP Software Engineer MCP server in PolicyLayer and add a rule for mock_api_server: 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 Software Engineer. Nothing to install.

What risk level is mock_api_server? +

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

Can I rate-limit mock_api_server? +

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

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

mock_api_server is provided by the MCP Software Engineer MCP server (rajawatrajat/mcp-software-engineer). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.