AI-powered Upwork cover letter generator – Pinecone, Groq, Google Gemin, SerpAPI
Needs changesNeeds changes. This template uses 2 thing(s) that n8n 3.0 removes: AI Agent v1 (old agent modes), SerpApi (Google Search). 2 breaking item(s) found. Static check, last run 2026-10-19.
What this workflow does
This AI workflow has 15 nodes and runs when an HTTP GET request hits its webhook URL. Along the way it connects Pinecone Vector Store, Embeddings Google Gemini, Groq Chat Model and Vector Store Question Answer and 1 more.
How it runs
Trigger: When an HTTP GET request hits its webhook URL.
- Fields_Mappings (Edit Fields (Set)): sets or maps fields
- Basic LLM Chain: sends a prompt to an LLM, with model: Groq Chat Model
- Question and Answer Chain: answers questions over your documents (RAG), with model: Groq Chat Model; retriever: Vector Store Retriever
- AI Agent: runs an AI agent, with model: Groq Chat Model; 2 tools (SerpAPI, Answer questions with a vector store); memory: Window Buffer Memory
- Markdown: converts between Markdown and HTML
- Respond to Webhook: sends the response back to the webhook caller
Services it uses
Before you upgrade to n8n 3.0
2 things in this workflow are removed in n8n 3.0. Fix them before you upgrade:
- AI Agent v1 (old agent modes) in AI Agent (v1.7): replace with Latest AI Agent node (Tools Agent). For SQL Agent, use a Postgres or MySQL tool with a recent AI Agent.
- 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 |
|---|---|
| AI Agent v1 (old agent modes) AI Agent (v1.7) | Latest AI Agent node (Tools Agent). For SQL Agent, use a Postgres or MySQL tool with a recent AI Agent. |
| 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 (14)
- AI Agent
@n8n/n8n-nodes-langchain.agent - Pinecone Vector Store
@n8n/n8n-nodes-langchain.vectorStorePinecone - Embeddings Google Gemini
@n8n/n8n-nodes-langchain.embeddingsGoogleGemini - Webhook
n8n-nodes-base.webhook - Simple Memory
@n8n/n8n-nodes-langchain.memoryBufferWindow - Groq Chat Model
@n8n/n8n-nodes-langchain.lmChatGroq - Respond to Webhook
n8n-nodes-base.respondToWebhook - Markdown
n8n-nodes-base.markdown - Edit Fields (Set)
n8n-nodes-base.set - Basic LLM Chain
@n8n/n8n-nodes-langchain.chainLlm - Question and Answer Chain
@n8n/n8n-nodes-langchain.chainRetrievalQa - Vector Store Retriever
@n8n/n8n-nodes-langchain.retrieverVectorStore - Vector Store Question Answer Tool
@n8n/n8n-nodes-langchain.toolVectorStore - SerpApi (Google Search)
@n8n/n8n-nodes-langchain.toolSerpApi
From the author
🚀 Automated Upwork Cover Letter Generator with n8n + MacOS Shortcut + Pinecone Context Retrieval This n8n automation is designed to streamline the Upwork proposal process by generating highly personalized, context-aware cover letters using your own skills…