# post_comment

Post a top-level comment on a Reddit post.

Agent View of the PolicyLayer registry record for `post_comment`. HTML page: https://policylayer.com/tools/1146345502-reddit-skills/post-comment

## Facts

- Tool: `post_comment`
- Server: Reddit Skills (`1146345502/reddit-skills`) — https://policylayer.com/tools/1146345502-reddit-skills.md
- Homepage: https://github.com/1146345502/reddit-skills
- Risk category: Write (Medium risk)
- Registry record: grade C, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "post_comment",
    "arguments": {}
  }
}
```

## 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 own definition: "Tool description: 'Post a top-level comment on a Reddit post.' This creates new content on Reddit, a reversible action."

## Use case

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.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Reddit Skills:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "post_comment": {
      "limits": [
        {
          "counter": "post_comment_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Reddit Skills (15)

- `logout` — Destructive — https://policylayer.com/tools/1146345502-reddit-skills/logout.md
- `check_login` — Read — https://policylayer.com/tools/1146345502-reddit-skills/check-login.md
- `get_post_detail` — Read — https://policylayer.com/tools/1146345502-reddit-skills/get-post-detail.md
- `home_feed` — Read — https://policylayer.com/tools/1146345502-reddit-skills/home-feed.md
- `search` — Read — https://policylayer.com/tools/1146345502-reddit-skills/search.md
- `subreddit_feed` — Read — https://policylayer.com/tools/1146345502-reddit-skills/subreddit-feed.md
- `subreddit_rules` — Read — https://policylayer.com/tools/1146345502-reddit-skills/subreddit-rules.md
- `user_profile` — Read — https://policylayer.com/tools/1146345502-reddit-skills/user-profile.md
- `downvote` — Write — https://policylayer.com/tools/1146345502-reddit-skills/downvote.md
- `reply_comment` — Write — https://policylayer.com/tools/1146345502-reddit-skills/reply-comment.md
- `save_post` — Write — https://policylayer.com/tools/1146345502-reddit-skills/save-post.md
- `submit_image_post` — Write — https://policylayer.com/tools/1146345502-reddit-skills/submit-image-post.md
- `submit_link_post` — Write — https://policylayer.com/tools/1146345502-reddit-skills/submit-link-post.md
- `submit_text_post` — Write — https://policylayer.com/tools/1146345502-reddit-skills/submit-text-post.md
- `upvote` — Write — https://policylayer.com/tools/1146345502-reddit-skills/upvote.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

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Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=1146345502-reddit-skills · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/1146345502-reddit-skills