Promo seeker: Auto-find promo codes with SerpAPI, Gemini & Telegram
Needs changesNeeds changes. This template uses 1 thing(s) that n8n 3.0 removes: SerpApi (Google Search). 1 breaking item(s) found. Static check, last run 2026-10-19.
What this workflow does
This AI workflow has 16 nodes and runs when someone submits an n8n form (“Promo Seeker”) (plus 3 other triggers). Along the way it connects SerpApi (Google Search), OpenRouter Chat Model, Telegram and Gmail.
How it runs
Trigger: When someone submits an n8n form (“Promo Seeker”) (plus 3 other triggers).
- Platform (Edit Fields (Set)): sets 2 fields: query, receiver
- Get row(s) (Data table): get
- Code Exist? (If): checks a condition and branches into true / false
- notify telegram (Telegram): uses Telegram
- Send a message (Gmail): uses Gmail
- Respond to Webhook: sends the response back to the webhook caller
- Promo Seeker Agent (AI Agent): runs an AI agent, with model: Gemini 2.5Pro; 1 tool (SerpAPI); output parser: Structured Output Parser
- Upsert row(s) (Data table): create or update
Services it uses
Before you upgrade to n8n 3.0
1 thing in this workflow is removed in n8n 3.0. Fix it before you upgrade:
- SerpApi (Google Search) in SerpAPI: no direct replacement: call the SerpApi REST API with an HTTP Request tool, or use a verified community node.
Rather not rewrite it? Many of these flows can be rebuilt in Make (free plan).
| Removed in 3.0 | Replace with |
|---|---|
| SerpApi (Google Search) SerpAPI | No direct replacement: call the SerpApi REST API with an HTTP Request tool, or use a verified community node |
Nodes used (15)
- SerpApi (Google Search)
@n8n/n8n-nodes-langchain.toolSerpApi - AI Agent
@n8n/n8n-nodes-langchain.agent - OpenRouter Chat Model
@n8n/n8n-nodes-langchain.lmChatOpenRouter - Schedule Trigger
n8n-nodes-base.scheduleTrigger - Edit Fields (Set)
n8n-nodes-base.set - No Operation, do nothing
n8n-nodes-base.noOp - Telegram Trigger
n8n-nodes-base.telegramTrigger - Structured Output Parser
@n8n/n8n-nodes-langchain.outputParserStructured - Data table
n8n-nodes-base.dataTable - If
n8n-nodes-base.if - n8n Form Trigger
n8n-nodes-base.formTrigger - Gmail
n8n-nodes-base.gmail - Telegram
n8n-nodes-base.telegram - Webhook
n8n-nodes-base.webhook - Respond to Webhook
n8n-nodes-base.respondToWebhook
From the author
Never pay full price from ignorance again. Promo Seeker finds, verifies, and delivers active promo codes via Telegram or email using SerpAPI + Gemini (OpenRouter). A 2-hour manual hunt becomes a 5-minute query, with results deduplicated into an n8n Data Table…