Track OpenAI token usage and AI agent metrics with Google Sheets dashboard

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Important notice

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

1. Workflow Overview

What it does Captures token usage and cost from your AI Agent/LLM. Logs model, tokens, cost, tool use, and conversation I/O to Google Sheets for simple observability and billing. Perfect for Develo...

Best for

Engineering automation workflows
Multimodal AI automation workflows
intermediate n8n builders looking for reusable templates

Tools used

@n8n/n8n-nodes-langchain.chattrigger, @n8n/n8n-nodes-langchain.agent, n8n-nodes-base.googlesheetstool, n8n-nodes-base.stickynote, n8n-nodes-base.set, @n8n/n8n-nodes-langchain.code, n8n-nodes-base.if, n8n-nodes-base.googlesheets

Source and attribution

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

Original n8n.io source

1.1 Workflow description

Title: Track OpenAI token usage and AI agent metrics with Google Sheets dashboard
Workflow name: Track OpenAI token usage and AI agent metrics with Google Sheets dashboard

What it does Captures token usage and cost from your AI Agent/LLM. Logs model, tokens, cost, tool use, and conversation I/O to Google Sheets for simple observability and billing.

Perfect for Developers adding usage monitoring to AI agents. Teams needing cost transparency in prototypes.

How it works

Chat Trigger collects user input for the AI Agent.
A Set node injects metadata like workflow, execution, and client IDs.
LangChain Code node returns a configured Chat model with a callback that reads usage metadata.
The callback computes input, output, and total costs based on per‑million token prices you define.
It appends token metrics to a Google Sheet via the Google Sheets Tool.
The Agent records intermediate tool calls.
An If node checks whether a tool was used.
When tools are used, the workflow logs input, output, tool name, and metadata to an Observability sheet.

How to use SELF-HOSTED N8N ONLY - the Langchain Code node is only available in the self-hosted version of n8n. It is not available in n8n cloud.

Requirements Self-hosted version of n8n

If you have any questions in running the workflow, see the attached video: https://youtu.be/JSulRS128MA

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 - When chat message received

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

Block 2 - AI Agent

Type / Role: @n8n/n8n-nodes-langchain.agent - agent
Config choices: Version 2.1

Block 3 - Token Usage Log

Type / Role: n8n-nodes-base.googleSheetsTool - googleSheetsTool
Config choices: Version 4.5

Block 4 - Sticky Note8

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

Block 5 - Sticky Note

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

Block 6 - Set • Workflow + Client Metadata

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

Block 7 - LangChain Chat Model + Token Callback

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

Block 8 - Branch • Tool Used?

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

Block 9 - Log • Token Metrics to Sheets (Tool)

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.6

3. Summary Table

Workflow	Track OpenAI token usage and AI agent metrics with Google Sheets dashboard
Complexity	intermediate
Nodes	9
Categories	Engineering, Multimodal AI
Author	Hunyao
Published	11 Aug 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/7231/7231.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 Multimodal AI workflows

Frequently asked questions

What does Track OpenAI token usage and AI agent metrics with Google Sheets dashboard 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 Engineering, Multimodal AI use case.

Hunyao

5 workflows

Nodes

@n8n/n8n-nodes-langchain.chattrigger @n8n/n8n-nodes-langchain.agent n8n-nodes-base.googlesheetstool n8n-nodes-base.stickynote n8n-nodes-base.set @n8n/n8n-nodes-langchain.code n8n-nodes-base.if n8n-nodes-base.googlesheets

Complexity

intermediate

Published 11 Aug 2025

Likes 0

View on n8n.io Download Workflow

Install path: /data/workflows/7231/7231.json

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Track OpenAI token usage and AI agent metrics with Google Sheets dashboard

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 - When chat message received

Block 2 - AI Agent

Block 3 - Token Usage Log

Block 4 - Sticky Note8

Block 5 - Sticky Note

Block 6 - Set • Workflow + Client Metadata

Block 7 - LangChain Chat Model + Token Callback

Block 8 - Branch • Tool Used?

Block 9 - Log • Token Metrics to Sheets (Tool)

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