JavaScriptSentry: detect sensitive information in JavaScript

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Important notice

This workflow is provided as-is. Please review and test before using in production.

1. Workflow Overview

This workflow contains community nodes that are only compatible with the self hosted version of n8n. How It works: When the user clicks "Execute Workflow" they are prompted for a URL, from there th...

Best for

SecOps automation workflows
AI Summarization automation workflows
intermediate n8n builders looking for reusable templates

Tools used

n8n-nodes-base.stickynote, n8n-nodes-base.formtrigger, n8n-nodes-puppeteer.puppeteer, n8n-nodes-base.code, n8n-nodes-base.aggregate, n8n-nodes-base.set, n8n-nodes-base.gmail, @n8n/n8n-nodes-langchain.lmchatopenai

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by Sean Birmingham.

Original n8n.io source

1.1 Workflow description

Title: JavaScriptSentry: detect sensitive information in JavaScript
Workflow name: JavaScriptSentry: detect sensitive information in JavaScript

This workflow contains community nodes that are only compatible with the self-hosted version of n8n.

How It works:

When the user clicks "Execute Workflow" they are prompted for a URL, from there the Puppeteer node extracts JavaScript links from the provided URL.

The links are then filtered down to ones that are relevant to the original URL that was quieried.

From there an AI Agent searches the provided JavaScript links for API Keys, email addresses, and PII leaks.

Finally a report is generated and sent via gmail to a desired destination. The report contains discovered links as well as any sensitive information that may have been found.

Why It's Useful:

This is a great tool for Cybersecurity testing.

For Developers, make sure your scripts are clean and you didn't leave anything behind.
For Ethical Hackers, this is a great tool for Bug Bounties by discovering sensitive information hidden in JavaScript.

1.2 Logical Blocks

This catalog entry is organized from the workflow JSON. The node-level section below shows the executable blocks available for review before importing the template.

2. Block-by-Block Analysis

Block 1 - Sticky Note

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 2 - Sticky Note1

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 3 - Sticky Note2

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 4 - Sticky Note3

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 5 - Sticky Note4

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 6 - Landing Page Url1

Type / Role: n8n-nodes-base.formTrigger - formTrigger
Config choices: Version 2.2

Block 7 - Puppeteer1

Type / Role: n8n-nodes-puppeteer.puppeteer - puppeteer
Config choices: Version 1

Block 8 - JavaScript Extractor1

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 9 - Aggregate1

Type / Role: n8n-nodes-base.aggregate - aggregate
Config choices: Version 1

Block 10 - Data Mapper1

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

Block 11 - Format Report for Email1

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 12 - Send a message1

Type / Role: n8n-nodes-base.gmail - gmail
Config choices: Version 2.1

Block 13 - OpenAI Chat Model

Type / Role: @n8n/n8n-nodes-langchain.lmChatOpenAi - lmChatOpenAi
Config choices: Version 1.2

Block 14 - JavaScript Search Agent w/Email Template1

Type / Role: @n8n/n8n-nodes-langchain.agent - agent
Config choices: Version 2

3. Summary Table

Workflow	JavaScriptSentry: detect sensitive information in JavaScript
Complexity	intermediate
Nodes	14
Categories	SecOps, AI Summarization
Author	Sean Birmingham
Published	30 Jun 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/5497/5497.json as the source template for this automation.
2. Import the template into n8n

Open n8n, import the downloaded JSON, and review each node before activating the workflow.
3. Configure credentials and variables

Replace placeholder credentials, API keys, webhook URLs, account IDs, and environment-specific values with your own settings.
4. Test with sample data

Run the workflow manually or in a staging workspace, inspect node output, and confirm downstream systems receive the expected data.
5. Activate and monitor

Enable the workflow only after testing, then monitor executions, errors, and rate limits during the first production runs.

5. General Notes & Resources

Review imported nodes carefully before activation. This catalog entry is intended to help you inspect the workflow structure, understand required services, and find related templates faster.

Node names, credentials, schedules, webhook paths, and external service limits may need adjustment for your workspace.

Download workflow JSON Original n8n.io source SecOps workflows AI Summarization workflows

Frequently asked questions

What does JavaScriptSentry: detect sensitive information in JavaScript do?

What do I need before importing this workflow?

Review the workflow JSON, configure any required credentials in n8n, and test the automation in a safe workspace before using it in production.

Can I customize this workflow?

Yes. Use the block-by-block analysis and the downloadable JSON to inspect each node, then adjust credentials, prompts, schedules, filters, or destinations for your SecOps, AI Summarization use case.

Sean Birmingham

7 workflows

Nodes

n8n-nodes-base.stickynote n8n-nodes-base.formtrigger n8n-nodes-puppeteer.puppeteer n8n-nodes-base.code n8n-nodes-base.aggregate n8n-nodes-base.set n8n-nodes-base.gmail @n8n/n8n-nodes-langchain.lmchatopenai

Complexity

intermediate

Published 30 Jun 2025

Likes 0

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Install path: /data/workflows/5497/5497.json

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JavaScriptSentry: detect sensitive information in JavaScript

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Sticky Note

Block 2 - Sticky Note1

Block 3 - Sticky Note2

Block 4 - Sticky Note3

Block 5 - Sticky Note4

Block 6 - Landing Page Url1

Block 7 - Puppeteer1

Block 8 - JavaScript Extractor1

Block 9 - Aggregate1

Block 10 - Data Mapper1

Block 11 - Format Report for Email1

Block 12 - Send a message1

Block 13 - OpenAI Chat Model

Block 14 - JavaScript Search Agent w/Email Template1

3. Summary Table

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

2. Import the template into n8n

3. Configure credentials and variables

4. Test with sample data

5. Activate and monitor

5. General Notes & Resources

Frequently asked questions