BuyProducts@marcinplazienski
Agent Review Star
The seller's cover image. See what's in the package

What you run

self-hosted
Runtime
n8n
Services you bring
  • n8n
  • Gmail
  • OpenAI
Accounts you sign up for, billed by them — not by Sigrix.
You provide
  • Google Sheets Oauth2 Api
  • Gmail OAuth credential
  • OPENAI_API_KEY
Workflow
13 connections
Running cost
~$22.90/moPaid to the services, not part of the price.

No secrets ship inside the download. The package arrives with empty credential slots. You paste your own keys into your own n8n; nothing you enter is transmitted to Sigrix or to the seller.

Product Self-hosted stack

Agent Review Star

Review-Star Agent helps local businesses generate more positive Google Maps reviews while protecting their online reputation.

marcinplazienski @marcinplazienski Founding seller
99 views Added Jul 22, 2026 Updated Sep 20, 2026
Price $49.00 · one-time
Category Marketing & Growth
Services needed 3
Running cost ~$22.90/mo · to the services
Works with n8n
$49.00 One-time

Then ~$22.90/mo in services you run yourself. Update policy: Updates included.

  • Includes 1 item
  • 14-day refund if it doesn't work as described
  • Free updates for as long as you own it
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Setup

What you run, and what it costs you

A self-hosted n8n workflow with 0 webhook(s) feeding 2 AI agent(s) (Gmail, OpenAI). Imported draft — review before publishing.

3 services · 3 credentials
01

Services you bring

Accounts you sign up for, billed by them — not by Sigrix.
n8n The automation host you self-host; runs the workflow and its webhooks. Self-hosted (e.g. ~$5/mo on a small VPS); n8n itself is source-available. Sign up
Gmail Sends and reads email. Free tier. Sign up
OpenAI The chat model behind the AI agents. Usage-based. Sign up
02

Credentials you provide

BYO — never embedded
Google Sheets Oauth2 Api for n8n Authenticates the Google Sheets Oauth2 Api integration. You supply
Gmail OAuth credential for Gmail Authenticates the Gmail integration. You supply
OPENAI_API_KEY for OpenAI Authenticates the OpenAI integration. You supply
03

What you need to have

Check these first. They are the same whether you own the listing or not.
  • n8n Cloud account or a self-hosted n8n instance
  • Google Sheets OAuth2 API credential — connects n8n to Google Sheets to retrieve appointment records and update review statuses
  • Gmail OAuth2 credential — sends review requests and alerts and monitors customer replies
  • OpenAI API credential with active billing — generates review requests and analyzes customer sentiment
  • Google Business Profile with a direct review link
  • PDF reader
Workflow

How it connects

13 connections
  1. 01Retrieve Appointments → Appointments from the Past 24 Hours (data flow)
  2. 02Appointments from the Past 24 Hours → Appointments Found? (data flow)
  3. 03AI Agent → Gmail (data flow)
  4. 04AI Agent → Mark as Sent (data flow)
  5. 05Gmail → AI Agent (data flow)
  6. 06AI Agent → Parse Sentiment (data flow)
  7. 07Parse Sentiment → Positive? (data flow)
  8. 08Positive? → Gmail (data flow)
  9. 09Positive? → Negative? (data flow)
  10. 10AI Agent → OpenAI (chat completion)
  11. 11Appointments Found? → AI Agent (data flow)
  12. 12Negative? → Gmail (data flow)
  13. 13Every Day at 10:00 AM → Retrieve Appointments (data flow)
Recurring cost

What it costs to run

Charged monthly by the services above.

~$22.90/mo
Estimated running cost $22.90/mo

You pay this to the services above, every month, for as long as the automation runs — it is not part of the listing price.

Breakdown
n8n Cloud Starter $22.82/mo
OpenAI API $0.08/mo
Gmail $0/mo
Google Sheets $0/mo
Assumes
  • Assumptions: 30 customers per month, n8n Cloud Starter billed annually, two OpenAI calls per customer, and free Gmail and Google Sheets accounts.
  • Monthly cost breakdown:
  • Total: $22.90
What you get

Everything in the package

Includes 1 item
  • A ready-to-import n8n workflow with two automated review-management flows A preconfigured Google Sheets template for customer and appointment tracking

What this does

Review-Star Agent helps local businesses generate more positive Google Maps reviews while protecting their online reputation. It automatically sends personalized follow-up messages after each appointment and uses AI to analyze customer sentiment. Satisfied customers receive a direct review link, while negative feedback is privately routed to the business owner for a quick response. The result is more reviews, stronger customer relationships, and less manual work.

Setup guide

The setup guide comes with the listing

Written by the seller for exactly this package, and unlocked with it.

What the guide holds

The seller's own steps for getting this running with your accounts, and how to use it once it is.

  • The setup guideThe seller's steps for getting this running with your own accounts, written for exactly this package.
  • The packageEvery item under What you get, as one download.
  • UpdatesFree updates for as long as you own it.
Locked until purchase
Buy once, keep it, with every update the seller publishes.
$49.00 one-time
Production readiness

1 of 5 production pillars met

Starter
  • Not yet met: Compatibility tested
  • Not yet met: Evaluated
  • Met: Security screened
  • Not yet met: Tools & integrations
  • Not yet met: Memory & state
  • Per-run observabilitycoming soon
Details

Specifics and common questions

published Jul 22, 2026
Type
Product
Runtime
n8nSelf-hosted
Services needed
3
Running cost
$22.90/mo
Update policy
Updates included
Category
Marketing & Growth
Published
Jul 22, 2026
Updated
Sep 20, 2026
Reviews
No reviews yet
8 listings · seller on Sigrix
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Founding seller One of the sellers who launched Sigrix — it recognises tenure, not vetting. Permanent — never removed.
View seller profile
  • What does Agent Review Star do?

    Review-Star Agent helps local businesses generate more positive Google Maps reviews while protecting their online reputation. It automatically sends personalized follow-up messages after each appointment and uses AI to analyze customer sentiment. Satisfied customers receive a direct review link, while negative feedback is privately routed to the business owner for a quick response. The result is more reviews, stronger customer relationships, and less manual work.

  • Who is Agent Review Star best for?

    Agent Review Star is built for marketing & growth use cases and is particularly useful for Google Reviews, Reputation Management, Customer Feedback, Sentiment Analysis, and n8n Automation.

  • What do I get with Agent Review Star?

    A ready-to-import n8n workflow with two automated review-management flows A preconfigured Google Sheets template for customer and appointment tracking

  • How much does Agent Review Star cost?

    Agent Review Star is priced at $49.00 on Sigrix.

  • Can I customize Agent Review Star after I get it?

    Yes — once you own Agent Review Star on Sigrix the deliverables are yours to adapt to your own data and workflow rather than starting from scratch.

  • How do I use this product?

    Open the setup guide on this page once you own it and follow it with your own accounts. Everything runs on your infrastructure; Sigrix never executes it for you.

  • What do I get after purchase?

    Immediate access to every file in the package, the full setup guide, and free updates to this listing for as long as you own it.

  • Where can I find support references?

    Support comes from the seller; their profile lists how to reach them. Your certificate and product identifiers are in the Your copy card on this page, and Sigrix mediates refund requests within 14 days.

Reviews

Ratings and reviews

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