post_comment

Post a top-level comment on a Reddit post.

SERVERReddit Skills SOURCE1146345502/reddit-skills

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade C, identity unverified Pull the record →

This record as markdown: /tools/1146345502-reddit-skills/post-comment.md

WHAT IT DOES

What post_comment does on Reddit Skills

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

RISK

Why post_comment is rated Medium

Posting a comment creates new user-generated content on a public platform. This is a Write operation because it modifies state (adds a comment) reversibly—comments can be deleted. It is not Execute (no code execution or arbitrary operations), Destructive (can be undone), or Financial (no monetary impact).

From the tool's definition Tool description: 'Post a top-level comment on a Reddit post.' This creates new content on Reddit, a reversible action.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs post_comment safely

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

post_comment Rate-limited

post_comment 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": {
    "post_comment": {
      "limits": [
        {
          "counter": "post_comment_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 Reddit Skills, apply this rule, and every post_comment call is checked against it from then on.

FAQ

Questions about post_comment

What does the post_comment tool do? +

Post a top-level comment on a Reddit post. It is categorised as a Write tool in the Reddit Skills MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on post_comment? +

Register the Reddit Skills MCP server in PolicyLayer and add a rule for post_comment: 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 Reddit Skills. Nothing to install.

What risk level is post_comment? +

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

Can I rate-limit post_comment? +

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

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

post_comment is provided by the Reddit Skills MCP server (1146345502/reddit-skills). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Reddit Skills, and thousands of servers like it.

This server

All 16 Reddit Skills tools →

Across the catalogue

team_manager_post_blackboard on Team Manager MCP → The MCP Attack Database →

Guides

Govern customer-ops agents →Argument validation →Scoped token →