Process multiple requests in FIFO using OpenAI Batch API and Supabase/Postgres

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1. Workflow Overview

How it works You provide a list of prompts and a system instruction, the workflow batches them into a single OpenAI Batch API request. The batch job is tracked in a Supabase openai batches table. A...

Best for

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

Tools used

n8n-nodes-base.httprequest, n8n-nodes-base.manualtrigger, n8n-nodes-base.if, n8n-nodes-base.code, n8n-nodes-base.extractfromfile, n8n-nodes-base.scheduletrigger, n8n-nodes-base.supabase, n8n-nodes-base.postgres

Source and attribution

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

Original n8n.io source

1.1 Workflow description

Title: Process multiple requests in FIFO using OpenAI Batch API and Supabase/Postgres
Workflow name: Process multiple requests in FIFO using OpenAI Batch API and Supabase/Postgres

How it works

You provide a list of prompts and a system instruction, the workflow batches them into a single OpenAI Batch API request. The batch job is tracked in a Supabase openai_batches table. A cron job polls OpenAI every 5 minutes, and once the batch completes, the results are decoded and stored back in Supabase.

Set up steps

Create the openai_batches table in Supabase. Schema is in the yellow sticky note. Add your OpenAI and Supabase/Postgres credentials to the workflow. Replace the mock data with your actual prompts and you're ready to go!

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 - Call Files API

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

Block 2 - Call Batch API

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

Block 3 - Start (mock data)

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

Block 4 - If status = completed

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

Block 5 - Convert to batch requests in .jsonl

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

Block 6 - .jsonl to base64

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

Block 7 - Decode base64

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

Block 8 - Call Batch API to retrieve batch object

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.1

Block 9 - Download .jsonl result

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.1

Block 10 - Cron Job (5 mins)

Type / Role: n8n-nodes-base.scheduleTrigger - scheduleTrigger
Config choices: Version 1.3

Block 11 - Create a row in batch table

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

Block 12 - Get the earliest uncompleted batch

Type / Role: n8n-nodes-base.postgres - postgres
Config choices: Version 2.6

Block 13 - Update status

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

Block 14 - Update status and result

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

Block 15 - Sticky Note

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

Block 16 - Sticky Note1

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

Block 17 - Sticky Note2

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

Block 18 - Submission done

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

Block 19 - Retrieval done

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

3. Summary Table

Workflow	Process multiple requests in FIFO using OpenAI Batch API and Supabase/Postgres
Complexity	advanced
Nodes	19
Categories	Engineering, AI Summarization
Author	Teng Wei Herr
Published	06 Feb 2026

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/13238/13238.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 Summarization workflows

Frequently asked questions

What does Process multiple requests in FIFO using OpenAI Batch API and Supabase/Postgres 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, AI Summarization use case.

Teng Wei Herr

1 workflow

Nodes

n8n-nodes-base.httprequest n8n-nodes-base.manualtrigger n8n-nodes-base.if n8n-nodes-base.code n8n-nodes-base.extractfromfile n8n-nodes-base.scheduletrigger n8n-nodes-base.supabase n8n-nodes-base.postgres

Complexity

advanced

Published 06 Feb 2026

Likes 0

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Install path: /data/workflows/13238/13238.json

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Process multiple requests in FIFO using OpenAI Batch API and Supabase/Postgres

Workflow preview

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

How it works

Set up steps

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Call Files API

Block 2 - Call Batch API

Block 3 - Start (mock data)

Block 4 - If status = completed

Block 5 - Convert to batch requests in .jsonl

Block 6 - .jsonl to base64

Block 7 - Decode base64

Block 8 - Call Batch API to retrieve batch object

Block 9 - Download .jsonl result

Block 10 - Cron Job (5 mins)

Block 11 - Create a row in batch table

Block 12 - Get the earliest uncompleted batch

Block 13 - Update status

Block 14 - Update status and result

Block 15 - Sticky Note

Block 16 - Sticky Note1

Block 17 - Sticky Note2

Block 18 - Submission done

Block 19 - Retrieval done

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