deploy_blog · Hexo Blog MCP Server MCP: Risk & Policy

WHAT IT DOES

What deploy_blog does on Hexo Blog MCP Server

AI agents invoke deploy_blog to trigger actions in Hexo Blog MCP Server. 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 deploy_blog needs a policy

The deploy_blog tool triggers a sequence of external commands (clean, generate, deploy) that execute code and interact with GitHub Pages infrastructure. While deployment is the intended use case, misuse could deploy malicious content, overwrite live site assets, or trigger unintended state changes in the remote repository.

From the tool's definition Tool performs hexo clean && hexo generate && hexo deploy operations, which execute build and deployment commands with external side effects.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

deploy_blog Rate-limited

deploy_blog 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": {
    "deploy_blog": {
      "limits": [
        {
          "counter": "deploy_blog_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 Hexo Blog MCP Server, so you can run agents against it safely.

FAQ

Questions about deploy_blog

What does the deploy_blog tool do? +

构建并发布博客到 GitHub Pages（执行 hexo clean && hexo generate && hexo deploy）. It is categorised as a Execute tool in the Hexo Blog MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on deploy_blog? +

Register the Hexo Blog MCP Server MCP server in PolicyLayer and add a rule for deploy_blog: 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 Hexo Blog MCP Server. Nothing to install.

What risk level is deploy_blog? +

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

Can I rate-limit deploy_blog? +

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

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

deploy_blog is provided by the Hexo Blog MCP Server MCP server (leejersey/hexo-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.