Allow your AI to call an API to fetch data

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Important notice

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

1. Workflow Overview

Use n8n to bring data from any API to your AI. This workflow uses the Chat Trigger to provide the chat interf...

Best for

Engineering automation workflows
AI Chatbot automation workflows
advanced n8n builders looking for reusable templates

Tools used

n8n-nodes-base.stickynote, @n8n/n8n-nodes-langchain.chattrigger, @n8n/n8n-nodes-langchain.lmchatopenai, @n8n/n8n-nodes-langchain.memorybufferwindow, n8n-nodes-base.executeworkflowtrigger, @n8n/n8n-nodes-langchain.informationextractor, n8n-nodes-base.httprequest, @n8n/n8n-nodes-langchain.toolworkflow

Source and attribution

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

Original n8n.io source

1.1 Workflow description

Title: Allow your AI to call an API to fetch data
Workflow name: Allow your AI to call an API to fetch data

Use n8n to bring data from any API to your AI. This workflow uses the Chat Trigger to provide the chat interface, and the Custom n8n Workflow Tool to call a second workflow that calls the API.

The second workflow uses AI functionality to refine the API request based on the user's query. It then makes an API call, and returns the response to the main workflow.

This workflow is used in Advanced AI examples | Call an API to fetch data in the documentation.

To use this workflow:

Load it into your n8n instance.
Add your credentials as prompted by the notes.

Requires n8n 1.28.0 or above

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 Note1

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

Block 2 - Sticky Note2

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

Block 3 - Sticky Note

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

Block 4 - Sticky Note5

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 - Sticky Note3

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

Block 7 - Sticky Note6

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

Block 8 - When chat message received

Type / Role: @n8n/n8n-nodes-langchain.chatTrigger - chatTrigger
Config choices: Version 1.1

Block 9 - OpenAI Chat Model

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

Block 10 - Simple Memory

Type / Role: @n8n/n8n-nodes-langchain.memoryBufferWindow - memoryBufferWindow
Config choices: Version 1.3

Block 11 - When Executed by Another Workflow

Type / Role: n8n-nodes-base.executeWorkflowTrigger - executeWorkflowTrigger
Config choices: Version 1.1

Block 12 - OpenAI Chat Model1

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

Block 13 - Work out activity type and number of people1

Type / Role: @n8n/n8n-nodes-langchain.informationExtractor - informationExtractor
Config choices: Version 1

Block 14 - Call the API

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 15 - Activity Tool

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

Block 16 - Set 'response' value

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

Block 17 - Combine

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

Block 18 - AI Agent

Type / Role: @n8n/n8n-nodes-langchain.agent - agent
Config choices: Version 1.8

3. Summary Table

Workflow	Allow your AI to call an API to fetch data
Complexity	advanced
Nodes	18
Categories	Engineering, AI Chatbot
Author	Deborah
Published	14 Feb 2024

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/2094/2094.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 Engineering workflows AI Chatbot workflows

Frequently asked questions

What does Allow your AI to call an API to fetch data do?

Use n8n to bring data from any API to your AI. This workflow uses the Chat Trigger to provide the chat interf...

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 Engineering, AI Chatbot use case.

Deborah

5 workflows

Nodes

n8n-nodes-base.stickynote @n8n/n8n-nodes-langchain.chattrigger @n8n/n8n-nodes-langchain.lmchatopenai @n8n/n8n-nodes-langchain.memorybufferwindow n8n-nodes-base.executeworkflowtrigger @n8n/n8n-nodes-langchain.informationextractor n8n-nodes-base.httprequest @n8n/n8n-nodes-langchain.toolworkflow

Complexity

advanced

Published 14 Feb 2024

Likes 0

View on n8n.io Download Workflow

Install path: /data/workflows/2094/2094.json

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Allow your AI to call an API to fetch data

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 Note1

Block 2 - Sticky Note2

Block 3 - Sticky Note

Block 4 - Sticky Note5

Block 5 - Sticky Note4

Block 6 - Sticky Note3

Block 7 - Sticky Note6

Block 8 - When chat message received

Block 9 - OpenAI Chat Model

Block 10 - Simple Memory

Block 11 - When Executed by Another Workflow

Block 12 - OpenAI Chat Model1

Block 13 - Work out activity type and number of people1

Block 14 - Call the API

Block 15 - Activity Tool

Block 16 - Set 'response' value

Block 17 - Combine

Block 18 - AI Agent

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