Reddit Brand & Keyword Monitor — New Mention Alerts (Vigia)

Monitor Reddit for your brand, product or competitor keywords and get only NEW posts since last check, with a discussion-spike signal. Charged only on new mentions, never per run. Ideal for social-listening and reputation agents.

Posts and comments

Set includeComments to get Reddit comments alongside posts — the replies are usually where the opinion is, and a brand mention buried in a comment thread is invisible to a posts-only scraper.

It costs nothing extra. Both share the same 15-item budget per subject, so a run with comments on returns fewer posts and the identical bill. Off by default.

Free tier — 10 results free on every run

The first 10 results of every run are free, on every run you ever make — not a one-off trial. Run it on your own subjects and see the real output before you are billed for a single result.

One guard: the free allowance never covers more than half of a run, so a run returning 6 results gets 3 free. That keeps the offer sustainable.

What it does

Catch new Reddit posts about your brand and a discussion spike. You get only what changed since your last check — never a full re-dump to diff yourself.

Why Vigia — 5 advantages a raw scraper can't match

1. You pay the alert price only for real change. New-mention alerts are billed only for genuinely new mentions since your last check. With monitoring on, a quiet run bills only a small check fee — never the result price on unchanged data; one-off runs pay only per result. Raw scrapers bill every row of a full re-scan every run.
2. Never billed on a failed source. If the source is down or an input fails, that item is free.
3. Append-only delta + spike signal. The first monitored run stores a free baseline; later runs deliver only what's new, plus a velocity-spike alert when volume suddenly surges (trend / review-bomb / hiring-surge).
4. Hard cost cap you control. Set maxTotalChargeUsd and the run can never bill above it — predictable spend, no surprise invoice.
5. Agent-ready output. Clean, normalized rows and a RUN_SUMMARY.json with ready-to-use signals — chainable from any MCP / A2A agent in one step.

Example input

{
  "keywords": [
    "your brand",
    "competitor name"
  ],
  "monitorEnabled": true,
  "maxTotalChargeUsd": 1.0
}

Set monitorEnabled: true so the first run stores a free baseline and later runs return only new results. Pin a monitorId to keep separate targets from sharing state.

Output

Each row is a normalized change record: record_id, query_id, title, url, author, published_at, score, text. A RUN_SUMMARY.json accompanies every run with the aggregated signal (counts, velocity spikes, trend).

How you're charged

• Mention alert — billed once per new mention since the last check (this is the only charge that scales with change).
• Monitoring check ($0.15) — only when you turn on scheduled monitoring (monitorEnabled), once per target per run, and only when the source responded. One-off runs never pay it: you pay only per result.
• One-off runs pay only per result. The monitoring check applies only to scheduled monitoring; every upstream call is capped, so a run can never cost more than you allow.

Related tools

• Already know which subreddit to watch? → Reddit Subreddit Scraper - Posts, Comments, Upvote Count
• Tracking one specific account instead of a keyword? → Reddit User Scraper - Posts, Comments, Karma History

How to use it in 3 steps

1. Click Try for free and fill in Reddit search keywords (keywords).
2. Optional: adjust the other fields; every one has a description and a sensible default.
3. Click Start and download the results as JSON, CSV or Excel, or read them from the API.

Use cases

• Brand mentions
• Market research
• AI datasets

Use it from code (API)

Every Apify Actor is an API. Start a run and read the results with one call.

Python

from apify_client import ApifyClient

client = ApifyClient("<YOUR_APIFY_TOKEN>")
run = client.actor("om_kh/reddit-posts-comments-scraper").call(run_input={"keywords": ["your brand", "competitor name"], "includeComments": false})
for item in client.dataset(run["defaultDatasetId"]).iterate_items():
    print(item)

JavaScript

import { ApifyClient } from 'apify-client';

const client = new ApifyClient({ token: '<YOUR_APIFY_TOKEN>' });
const run = await client.actor('om_kh/reddit-posts-comments-scraper').call({
    "keywords": [
        "your brand",
        "competitor name"
    ],
    "includeComments": false
});
const { items } = await client.dataset(run.defaultDatasetId).listItems();
console.log(items);

One HTTP call (cURL) — runs the Actor and returns the dataset in the same response:

curl -X POST "https://api.apify.com/v2/acts/om_kh~reddit-posts-comments-scraper/run-sync-get-dataset-items?token=<YOUR_APIFY_TOKEN>" \
  -H "Content-Type: application/json" \
  -d '{"keywords": ["your brand", "competitor name"], "includeComments": false}'

Integrations: n8n, Make, Zapier, Google Sheets

• n8n — the official Apify node, operation Run Actor and get dataset, Actor om_kh/reddit-posts-comments-scraper.
• Make — Apify › Run an Actor, then Apify › Get Dataset Items.
• Zapier — Apify › Run Actor; map the dataset items into your next step.
• Google Sheets, webhooks, Slack — add an integration from the Integrations tab of this Actor.
• Schedules — run it every hour or day from Schedules in Apify Console.

Use it from an AI agent (MCP and x402)

Connect Claude Desktop, Cursor, VS Code or any MCP client to Apify's MCP server at https://mcp.apify.com and add this Actor, om_kh/reddit-posts-comments-scraper, as a tool — the agent passes the same JSON as the run input and gets the dataset back.

AI agents that pay with x402 can run it too, without an Apify account: the Actor charges only per result delivered, so an agent pays exactly for what it gets.

FAQ

Is it legal to scrape Reddit Posts & Comments? This Actor collects only publicly available Reddit Posts & Comments data and never logs in. You are responsible for how you use it; check Reddit Posts & Comments's terms and your local law (GDPR, CCPA) if you store personal data, and ask a lawyer if unsure.

Do I need an account, cookies or an API key? No. You only need an Apify account to run it.

What data do I get? Posts and comments with text, subreddit, score and date. Download it as JSON, CSV, Excel, HTML or XML, or read it from the API.

Am I charged when something fails? No. An input that fails is listed with its reason in the run summary and is never charged.

Can I run it on a schedule? Yes. Create a schedule in Apify Console (hourly, daily, weekly) and connect webhooks, Google Sheets, Slack, n8n, Make or Zapier.

Can I use it from Python, JavaScript or an AI agent? Yes: see the code samples above, or connect AI agents through MCP with the reddit_new_mentions tool.

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