Use OpenClaw to build an AI automatic collection system in 30 minutes: grab structured data from web pages

Tutorial Objectives

Do you often need to collect information from a web page—competitor pricing, industry news, job postings, product data—and then manually copy and paste it into a table? Not only is this a waste of time, it's also error-prone.

In this tutorial, I will teach you step by step how to use OpenClaw's browser tool and DeepSeek V4's AI capabilities to build a fully automated web page data collection system. All operations do not require writing a single line of code and can be completed in 30 minutes.

Pain point issues:

• Manually copying web page data is time-consuming and labor-intensive, and at least 1-2 hours are wasted every day.
• Manual entry is prone to errors and the data format is not uniform
• Unable to automatically update regularly, information lags behind

What will you build?

After completing this tutorial, you will have:

• ✅ A browser tool that can automatically open the target web page and capture the specified content
• ✅ An AI processing chain that can automatically organize original web text into structured tables
• ✅ A scheduled task that runs automatically every morning and outputs the results to a local file

Prerequisites:

• Node.js (v18+) and npm installed
• There is an OpenClaw runtime environment
• Understand basic command line operations

Preparation list

Account preparation:

• OpenClaw is installed and available locally
• There is an AI API key (such as DeepSeek, OpenRouter, etc.)

Knowledge Preparation:

• Basic understanding of terminal/command line operations
• Familiar with Markdown format

Budget Estimate:

• OpenClaw: free and open source, no payment required
• AI API: DeepSeek V4 costs about 0.01 yuan per acquisition, less than 1 yuan per month

Overall architecture

Data flow:

## ] → [OpenClaw] → [AI] → [

Step 1: OpenClaw

****OpenClaw，AI。

# OpenClaw
npm install -g openclaw

#
openclaw --version

#
openclaw tools

openclaw 。 browser ，。

⚠️ **** npm install -g ， sudo npm install -g openclaw， npx openclaw （）。

Step 2:

**** OpenClaw ，。

#
openclaw browser navigate "https://example.com/products"

#
openclaw browser snapshot --full

（Headless Browser），。 --full ，。

⚠️ ****，，。

Step 3: AI

****HTML/，AI。

# AI
openclaw ai process --input raw_content.txt --format json --schema "、、、"

{
  "provider": "deepseek",
  "model": "deepseek-v4-flash",
 "system_prompt": "。，JSON。",
  "temperature": 0.1,
  "max_tokens": 2000
}

****AI schema 。，。DeepSeek V4 ，——100token12。

❌ ****，AI ✅ ****system prompt returns JSON format

Step 4:

**** OpenClaw cron ，。

# ，8
openclaw cron create \
  --name "daily-data-collection" \
  --schedule "0 8 * * *" \
 --task ""

#
openclaw cron list

#
openclaw cron run "daily-data-collection"

// ， n8n
// OpenClawwebhookn8n，、

❌ ****，cron ✅ ****cron， Asia/Shanghai

❌ ****IP ✅ ****11，

，

• 1
• JSON，
• ，1-2

**Q1: **

A: JavaScript，JS。， --user-agent 。

Q2: AI

A: system prompt。prompt "JSON，"。

**Q3: **

A: cron0 8 * * * means execution at 8:00 every morning. Also check if the OpenClaw background process is running.

Advanced skills

Optimization 1 — Multi-page collection:

If you need to collect multiple pages, you can write a simple loop script to pass different URLs into the browser tool and process them one by one. Cooperating with the concurrency function of OpenClaw can greatly improve efficiency.

Optimization 2 — Data deduplication:

The results of each collection may contain duplicate data. You can add deduplication logic before output, or use n8n to connect to the database to achieve incremental updates.

Automation Enhancements:

If you want further automation, you can integrate n8n or LangGraph to orchestrate a more complex workflow - such as a fully automatic link of collection → cleaning → warehousing → notification.

Tool entry

This tutorial uses the following tools, click to view detailed introduction:

• OpenClaw: the core automation platform on which the scheduling and orchestration of all steps are completed
• DeepSeek V4: AI processing engine used to convert raw web page text into structured data
• n8n: Optional workflow orchestration tool for more complex data post-processing

Related resources

Extended reading:

• OpenClaw
• DeepSeek V4 API
• AI

Tool Link:

• OpenClaw: https://github.com/nousresearch/openclaw
• DeepSeek: https://platform.deepseek.com/
• n8n: https://n8n.io/