substack_live_blog_end · Substack MCP Server MCP

WHAT IT DOES

What substack_live_blog_end does on Substack MCP Server

AI agents use substack_live_blog_end to create or update resources in Substack MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Substack MCP Server environment.

WHY IT NEEDS A POLICY

Why substack_live_blog_end needs a policy

Ending a live blogging session is a Write operation because it modifies the state of an ongoing content operation. While reversible (a new session could be started), it represents a consequential change to the live blog's operational state.

From the tool's definition Tool name 'substack_live_blog_end' and description 'End the current live blogging session' indicate a state-changing operation that terminates an active live blog session.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

substack_live_blog_end Rate-limited

substack_live_blog_end stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "substack_live_blog_end": {
      "limits": [
        {
          "counter": "substack_live_blog_end_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Substack MCP Server, so you can run agents against it safely.

FAQ

Questions about substack_live_blog_end

What does the substack_live_blog_end tool do? +

End the current live blogging session. It is categorised as a Write tool in the Substack MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on substack_live_blog_end? +

Register the Substack MCP Server MCP server in PolicyLayer and add a rule for substack_live_blog_end: 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 Substack MCP Server. Nothing to install.

What risk level is substack_live_blog_end? +

substack_live_blog_end is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit substack_live_blog_end? +

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

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

substack_live_blog_end is provided by the Substack MCP Server MCP server (jessicaruthabbott/my-substack-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.