blog_publish_post · Mcp Blog MCP: Risk & Policy

WHAT IT DOES

What blog_publish_post does on Mcp Blog

AI agents invoke blog_publish_post to trigger actions in Mcp Blog. 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 blog_publish_post needs a policy

This tool both writes data (saves markdown/frontmatter to S3) and triggers an external CI/CD pipeline (fires a GitHub Actions build to publish). The most severe applicable category is Execute, because it triggers an external operation (GitHub Actions workflow) whose effects depend on the provided content. The blast radius is high since misuse could publish unintended content publicly and trigger build pipelines.

From the tool's definition S3 に保存し、GitHub Actions ビルドを発火させて公開する

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

blog_publish_post Rate-limited

blog_publish_post 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": {
    "blog_publish_post": {
      "limits": [
        {
          "counter": "blog_publish_post_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 Blog, so you can run agents against it safely.

FAQ

Questions about blog_publish_post

What does the blog_publish_post tool do? +

AI 補正済みの markdown と frontmatter を S3 に保存し、GitHub Actions ビルドを発火させて公開する。. It is categorised as a Execute tool in the Mcp Blog MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on blog_publish_post? +

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

What risk level is blog_publish_post? +

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

Can I rate-limit blog_publish_post? +

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

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

blog_publish_post is provided by the Mcp Blog MCP server (masatoshisano/mcp-blog). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.