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AdvancedPremiumDocument ProcessingScheduled trigger23 nodes

Parse receipts: Slack for contracts

Runs on a schedule across Slack, Google Sheets and PostgreSQL, branches on the check before anything is written, then drops anything it has already handled. Built for contracts, around a "Export All Rows (Google Sheets)" step, in 23 documented nodes.

Parse receipts with Google Drive and PostgreSQL automatically. An original, ready-to-import n8n workflow built around the 'File Processing' pattern for legal & compliance. It runs on a schedule and orchestrates 23 nodes across Slack, Google Sheets, PostgreSQL. It uses n8n's LangChain AI nodes (Agent/Chain + chat model). Retry-on-fail is enabled on external calls. Import the JSON, add your credentials, and adapt the parameters. Nothing slips through the cracks.

Key benefits

  • ✓Keeps Slack and Google Sheets in step for contracts, without anyone re-typing a row
  • ✓Safe to re-run: records already in Slack or Google Sheets are skipped, across all 23 nodes of this contracts build
  • ✓A failed Slack or Google Sheets call is retried rather than dropped, at any of the 23 nodes in this contracts build
  • ✓Every contracts run leaves an audit row behind, alongside Slack
  • ✓Fans the same result out to PostgreSQL in the same run, for contracts

Use cases

  • →Teams keeping Slack and Google Sheets aligned by hand for contracts
  • →Contracts work where "Export All Rows (Google Sheets)" is still a manual step before Slack
  • →Contracts work that only reaches Slack on a schedule, when someone remembers to start it

Integrations

SlackGoogle SheetsPostgreSQLGoogle DriveHTTP / REST APIOpenAI

Workflow preview (23 nodes)

The template's actual node layout and connections. Node parameters and credential slots unlock with the download.

Weekly ScheduleSchedule TriggerExport All Rows (Google…Google SheetsSerialize to CSVConvert To FileCompress ArchiveCompressionUpload Backup to Google…Google DriveBackup Size Sane?IfAlarm — Empty BackupSlackFingerprint for Idempot…CodeDrop Already-Processed …Remove DuplicatesLoad Previous SnapshotPostgresCompute Drift vs Snapsh…CodeStamp Completion TimeDate TimePersist Run MetadataExecution DataEnrich with Reference D…Http RequestFold In Enrichment Fiel…SetSerialize Run Output (C…Convert To FileArchive Copy to Google …Google DriveSummarize Run StatsSetAppend Audit Row (Postg…PostgresSend Summary to SlackSlackCapture Failure ContextSetEscalate Failure to Sla…SlackPark in Dead-Letter Que…Google Sheets

What's inside (23 nodes)

A look at the node types this workflow uses. No purchase required — full parameters and credentials are yours after you buy.

CodeCompressionConvert To FileDate TimeExecution DataGoogle DriveGoogle SheetsHttp RequestIfPostgresRemove DuplicatesSchedule TriggerSetSlack

From download to running in 3 steps

  1. 1
    Import. In n8n, open Workflows → menu → “Import from File” and pick the downloaded JSON.
  2. 2
    Connect. Add your own credentials on the app nodes - n8n highlights exactly which ones need them.
  3. 3
    Activate. Run it once to test, then toggle Active. The automation is live.

What you'll learn

Production level

Production-grade: idempotency, dead-letter handling, and reconciliation included.

  • •Serializing processed items back out to a file
  • •Quarantining malformed rows without failing the whole batch
  • •Archiving the processed file

Every node carries its own documentation on the canvas, plus notes explaining why the architecture was built this way, a credential setup guide, troubleshooting, and three practice exercises. Sample data comes pinned to the trigger, so you can hit Execute and watch data flow before connecting a single account.

Common questions

What exactly do I get?

The complete, ready-to-import n8n workflow as a JSON file, delivered instantly after payment. Import it into your own n8n (cloud or self-hosted), add your credentials, and it runs.

How do I import it into n8n?

In n8n, open Workflows, click the three-dot menu, choose “Import from File”, and select the downloaded JSON. Then connect your own app credentials on the highlighted nodes.

Do I need anything else for it to work?

You need your own n8n instance and accounts/credentials for the apps this workflow connects to (Slack, Google Sheets, PostgreSQL, Google Drive, …). No coding is required.

What if it doesn't work for me?

If the file is faulty, won't import, or isn't as described, contact us within 7 days and we'll fix it or refund you - see our refund policy.

Can I modify or resell it?

You can freely adapt and use it in your own or your clients' projects. Reselling or redistributing the template file itself is not permitted.

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Original n8n workflow template created and owned by WorkflowCrate. After purchase you receive the ready-to-import JSON file and a license to use and adapt it in your own projects.