start_preview_server

A execute tool on the Cocos MCP server.

SERVERCocos SOURCEcaravanglory/cocos-mcp-server

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/caravanglory-cocos-mcp-server/start-preview-server.md

WHAT IT DOES

What start_preview_server does on Cocos

AI agents invoke start_preview_server to trigger actions in Cocos. 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.

RISK

Why start_preview_server is rated High

Starting a preview server is an Execute category action because it initiates an external process/service whose behavior and side effects depend on the environment and arguments provided. While not immediately destructive or financial, it represents code/process execution.

From the tool's definition The tool 'start_preview_server' starts a preview server, which triggers an external operation (server startup) whose effects depend on system state and configuration. This is an execution action that launches a process.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs start_preview_server safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Cocos, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For start_preview_server, this is the rule to start with:

start_preview_server Rate-limited

start_preview_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": {
    "start_preview_server": {
      "limits": [
        {
          "counter": "start_preview_server_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Cocos, apply this rule, and every start_preview_server call is checked against it from then on.

FAQ

Questions about start_preview_server

What does the start_preview_server tool do? +

start_preview_server is a execute tool on the Cocos MCP server. It is categorised as a Execute tool in the Cocos MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on start_preview_server? +

Register the Cocos MCP server in PolicyLayer and add a rule for start_preview_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 Cocos. Nothing to install.

What risk level is start_preview_server? +

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

Can I rate-limit start_preview_server? +

Yes. Add a rate_limit block to the start_preview_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 start_preview_server completely? +

Set action: deny in the PolicyLayer policy for start_preview_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 start_preview_server? +

start_preview_server is provided by the Cocos MCP server (caravanglory/cocos-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Cocos, and thousands of servers like it.

This server

All 157 Cocos tools → High-risk tools on this server →

Across the catalogue

start_devtools_monitoring on Percepta MCP Server →team_manager_start_room on Team Manager MCP →start_etw_trace on Procmon → All high-risk MCP tools → The MCP Attack Database →

Guides

Govern code and CI agents →Agent sandbox →Least privilege for MCP →