Intelligent Web Query and Semantic Re-Ranking Flow

Step 1. Set Up a Free Brave Web Search Query API Key To attain the free web search API tier from Brave, follow these steps: 1. Visit api.search.brave.com 2. Create an account 3. Subscribe to the free plan (no charge) 4. Navigate to the API Keys section 5. Generate an API key. For the subscription type, choose "Free". 6. Go to the "Query" Nodes and change the "X-Subscription-Token" value to your API Key.

Workflow Structure (16 nodes)
100%
Webhook
Webhook
Date Time
Date & Time
Langchain.output Parser Autofixing
Auto-fixing Output Parser
Langchain.chain Llm
Semantic Search -Query Maker
Langchain.output Parser Structured
Structured Output Parser1
Http Request
Query
Langchain.lm Chat Google Gemini
Parser Model
Langchain.lm Chat Google Gemini
Agent Model
Code
Query-1 Combined
Langchain.chain Llm
Semantic Search - Result Re-Ranker
Langchain.output Parser Autofixing
Auto-fixing Output Parser6
Langchain.output Parser Structured
Structured Output Parser2
Respond To Webhook
Respond to Webhook
Langchain.lm Chat Anthropic
Anthropic Chat Model
Langchain.lm Chat Open Ai
OpenAI Chat Model
Http Request
Webhook Call
Node Types:
default
trigger
code
http
action
Requires credentials

Prerequisites

Required Credentials (3)

Anthropic

Used by: Anthropic Chat Model

Docs

Google Palm

Used by: Parser Model, Agent Model

Docs

OpenAI

Used by: OpenAI Chat Model

Docs

Multiple services required

This workflow needs 3 different credentials. Make sure you have accounts for all services before importing.

Complexity

Advanced

Expert level. Custom code, complex logic, many integrations.

Setup time: ~50 min
Score: 68/100
Custom Code
4 Integrations

When to Use This Workflow

AI-Powered Content Creation

Automate content generation, summarization, or analysis using AI capabilities.

Save hours of manual work while maintaining quality and consistency.

Real-time Response

React instantly when events happen - new orders, form submissions, or API calls.

Zero delay between trigger and action for time-sensitive workflows.

Error Reduction

Eliminate human error from routine processes with consistent automation.

Improve accuracy and reliability across your workflows.

workflow.json
{
  "id": "wa2uEnSIowqSrHoY",
  "meta": {
    "instanceId": "cca06617664f52c5a019ea575691fdbce675dd95dc0452af5f13dbe76d615b69"
  },
  "name": "Intelligent Web Query and Semantic Re-Ranking Flow",
  "tags": [],
  "nodes": [
    {
      "id": "8e7dc5cb-6822-4ef6-9e5a-2b350a1526bf",
      "name": "Sticky Note4",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -640,
        -620
      ],
      "parameters": {
        "color": 5,
        "width": 1172,
        "height": 970,
...

Workflow Details

Nodes
20
Trigger
Webhook
Source
awesome
Added
Dec 4, 2025

Need Help?

Check out the official n8n documentation for detailed guides.

Related Workflows

🔍🛠️Perplexity Researcher to HTML Web Page

Create Article from Perplexity Research

Lmchatopenai
Outputparserstructured
Webhook
Telegram
47 nodesWebhook
Curated

Docsify example

Main Docsify webhook In response, n8n serves the main html page with the [Docsify JS library](https://docsify.js.org/)

Readwritefile
N8n
Chainllm
Lmchatopenai
60 nodesWebhook
Curated

Host Your Own AI Deep Research Agent with n8n, Apify and OpenAI o3

2. Ask Clarifying Questions [Read more about form nodes](https://docs.n8n.io/integrations/builtin/core-nodes/n8n-nodes-b...

Outputparserstructured
Lmchatopenai
Form
Chainllm
87 nodesEvent
Curated

Proxmox AI Agent with n8n and Generative AI Integration

API Key for Proxmox Create Credentails ensure to create credentials in Proxmox Data Center as API Key and then create...

Http-request
Toolhttprequest
Outputparserautofixing
Lmchatgooglegemini
35 nodesEvent
Curated

AI Data Extraction with Dynamic Prompts and Airtable

1. Get Table Schema [Learn more about the Airtable node](https://docs.n8n.io/integrations/builtin/app-nodes/n8n-nodes-ba...

Http-request
Chainllm
Lmchatopenai
Airtable
51 nodesWebhook
Curated

AI Voice Chat using Webhook, Memory Manager, OpenAI, Google Gemini & ElevenLabs

Get Context

Memorymanager
Memorybufferwindow
Lmchatgooglegemini
Http-request
15 nodesWebhook
Curated