reddit_subscribe · UnClick MCP: Risk & Policy

WHAT IT DOES

What reddit_subscribe does on UnClick

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

PARAMETERS

Parameter	Type	Required	Description
`sr`	string	Yes
`action`	string	Yes	sub or unsub
`access_token`	string	Yes

Parameters from the server's own tool schema.

WHY IT NEEDS A POLICY

Why reddit_subscribe needs a policy

This tool modifies account subscription state on Reddit (subscribing or unsubscribing from subreddits). This is a reversible write action — subscribing can be undone by unsubscribing and vice versa. No data is deleted permanently, no code is executed, and no financial transaction occurs. Misuse could spam subscriptions or alter a user's feed unexpectedly, warranting medium severity.

From the tool's definition Subscribe to or unsubscribe from a Reddit subreddit

Risk signalsHandles credentials or secrets (access_token)

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

reddit_subscribe Rate-limited

reddit_subscribe 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": {
    "reddit_subscribe": {
      "limits": [
        {
          "counter": "reddit_subscribe_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 UnClick, so you can run agents against it safely.

FAQ

Questions about reddit_subscribe

What does the reddit_subscribe tool do? +

Subscribe to or unsubscribe from a Reddit subreddit. It is categorised as a Write tool in the UnClick MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does reddit_subscribe accept? +

reddit_subscribe accepts 3 parameters: sr, action, access_token. Required: sr, action, access_token. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on reddit_subscribe? +

Register the UnClick MCP server in PolicyLayer and add a rule for reddit_subscribe: 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 UnClick. Nothing to install.

What risk level is reddit_subscribe? +

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

Can I rate-limit reddit_subscribe? +

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

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

reddit_subscribe is provided by the UnClick MCP server (@unclick/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.