Detect stock price anomalies & send news alerts with Marketstack, HackerNews & DeepL

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Important notice

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

1. Workflow Overview

Price Anomaly Detection & News Alert (Marketstack + HN + DeepL + Slack) Overview This workflow monitors a stock’s closing price via Marketstack . It computes a 20 day moving average and standard de...

Best for

Crypto Trading automation workflows
Multimodal AI automation workflows
advanced n8n builders looking for reusable templates

Tools used

n8n-nodes-base.scheduletrigger, n8n-nodes-base.marketstack, n8n-nodes-base.code, n8n-nodes-base.if, n8n-nodes-base.hackernews, n8n-nodes-base.deepl, n8n-nodes-base.slack, n8n-nodes-base.merge

Source and attribution

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

Original n8n.io source

1.1 Workflow description

Title: Detect stock price anomalies & send news alerts with Marketstack, HackerNews & DeepL
Workflow name: Detect stock price anomalies & send news alerts with Marketstack, HackerNews & DeepL

Price Anomaly Detection & News Alert (Marketstack + HN + DeepL + Slack)

Overview

This workflow monitors a stock’s closing price via Marketstack. It computes a 20-day moving average and standard deviation (±2σ). If the latest close is outside ±2σ, it flags an anomaly, fetches related headlines from Hacker News, translates them to Japanese with DeepL, and posts both original and translated text to Slack. When no anomaly is detected, it sends a concise “normal” report.

How it works

Daily trigger at 09:00 JST
Marketstack: fetch EOD data
Code: compute mean/σ and classify (normal/high/low)
IF: anomaly? → yes = news path / no = normal report
Hacker News: search related items
DeepL: translate EN → JA
Slack: send bilingual notification

Requirements

Marketstack API key
DeepL API key
Slack OAuth2 (bot token / channel permission)

Notes

Edit the ticker in Get Stock Data.
Adjust N (days) and k (sigma multiplier) in Calculate Deviation.
Keep credentials out of HTTP nodes (use n8n Credentials).

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 - Daily Check

Type / Role: n8n-nodes-base.scheduleTrigger - scheduleTrigger
Config choices: Version 1.2

Block 2 - Get Stock Data

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

Block 3 - Calculate Deviation

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

Block 4 - Is Anomaly? (status != "normal")

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

Block 5 - Get Related News

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

Block 6 - Translate News

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

Block 7 - Send Alert to Slack

Type / Role: n8n-nodes-base.slack - slack
Config choices: Version 2.3

Block 8 - Send Normal Report to Slack

Type / Role: n8n-nodes-base.slack - slack
Config choices: Version 2.3

Block 9 - Merge Original + Translated

Type / Role: n8n-nodes-base.merge - merge
Config choices: Version 3.2

Block 10 - Sticky Note

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

Block 11 - Sticky Note1

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

Block 12 - Sticky Note2

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

Block 13 - Sticky Note3

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

Block 14 - Sticky Note4

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

Block 15 - Sticky Note5

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

Block 16 - Sticky Note6

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

Block 17 - Sticky Note7

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

Block 18 - Sticky Note8

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

Block 19 - Sticky Note9

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

Block 20 - Sticky Note10

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

Block 21 - Sticky Note11

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

Block 22 - Sticky Note12

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

Block 23 - Sticky Note13

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

Block 24 - Add Symbol Field

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

Showing the first 24 of 26 workflow blocks. Download the JSON for the full node graph.

3. Summary Table

Workflow	Detect stock price anomalies & send news alerts with Marketstack, HackerNews & DeepL
Complexity	advanced
Nodes	26
Categories	Crypto Trading, Multimodal AI
Author	noda
Published	30 Oct 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/10306/10306.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 Crypto Trading workflows Multimodal AI workflows

Frequently asked questions

What does Detect stock price anomalies & send news alerts with Marketstack, HackerNews & DeepL 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 Crypto Trading, Multimodal AI use case.

noda

5 workflows

Nodes

n8n-nodes-base.scheduletrigger n8n-nodes-base.marketstack n8n-nodes-base.code n8n-nodes-base.if n8n-nodes-base.hackernews n8n-nodes-base.deepl n8n-nodes-base.slack n8n-nodes-base.merge

Complexity

advanced

Published 30 Oct 2025

Likes 0

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Install path: /data/workflows/10306/10306.json

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Detect stock price anomalies & send news alerts with Marketstack, HackerNews & DeepL

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

Price Anomaly Detection & News Alert (Marketstack + HN + DeepL + Slack)

Overview

How it works

Requirements

Notes

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Daily Check

Block 2 - Get Stock Data

Block 3 - Calculate Deviation

Block 4 - Is Anomaly? (status != "normal")

Block 5 - Get Related News

Block 6 - Translate News

Block 7 - Send Alert to Slack

Block 8 - Send Normal Report to Slack

Block 9 - Merge Original + Translated

Block 10 - Sticky Note

Block 11 - Sticky Note1

Block 12 - Sticky Note2

Block 13 - Sticky Note3

Block 14 - Sticky Note4

Block 15 - Sticky Note5

Block 16 - Sticky Note6

Block 17 - Sticky Note7

Block 18 - Sticky Note8

Block 19 - Sticky Note9

Block 20 - Sticky Note10

Block 21 - Sticky Note11

Block 22 - Sticky Note12

Block 23 - Sticky Note13

Block 24 - Add Symbol Field

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