followList

Follow a list to see its posts in the authenticated user timeline.

SERVERXdevplatform/xmcp SOURCExdevplatform/xmcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/xdevplatform-xmcp/followlist.md

WHAT IT DOES

What followList does on Xdevplatform/xmcp

AI agents use followList to create or update resources in Xdevplatform/xmcp, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Xdevplatform/xmcp environment.

RISK

Why followList is rated Medium

Following a list modifies the authenticated user's subscription/follow state on the platform. This is a reversible write operation (can be unfollowed), not destructive or financial. Misuse could cause unwanted content in timelines but blast radius is moderate.

From the tool's definition Follow a list to see its posts in the authenticated user timeline

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs followList safely

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

followList Rate-limited

followList 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": {
    "followList": {
      "limits": [
        {
          "counter": "followlist_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about followList

What does the followList tool do? +

Follow a list to see its posts in the authenticated user timeline. It is categorised as a Write tool in the Xdevplatform/xmcp MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on followList? +

Register the Xdevplatform/x MCP server in PolicyLayer and add a rule for followList: 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 Xdevplatform/xmcp. Nothing to install.

What risk level is followList? +

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

Can I rate-limit followList? +

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

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

followList is provided by the Xdevplatform/x MCP server (xdevplatform/xmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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