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ExpertPremiumDocument ProcessingScheduled trigger23 nodes

Process receipts with Google Sheets

Runs on a schedule across Google Sheets, Slack and Google Drive, looks the answer up in a vector store, then parses the incoming file into rows. Built for invoices, around a "List Changed Docs (Google Drive)" step, in 23 documented nodes.

Process receipts with Google Drive and Google Sheets. 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 Google Sheets, Slack, Google Drive. 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. What used to take a morning now runs on its own.

Key benefits

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

Use cases

  • Teams keeping Google Sheets and Slack aligned by hand for invoices
  • Answering invoices questions from your own indexed documents, then replying in Google Sheets
  • Invoices work where "List Changed Docs (Google Drive)" is still a manual step before Google Sheets
  • Invoices work that only reaches Google Sheets on a schedule, when someone remembers to start it

Integrations

Google SheetsSlackGoogle DriveHTTP / REST APIAnthropic

Workflow preview (23 nodes)

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

Daily ScheduleSchedule TriggerList Changed Docs (Goog…Google DriveRemove Duplicate Docume…Remove DuplicatesDownload File ContentGoogle DriveExtract Text from FileExtract From FileAttach Chunk MetadataCodeInsert into Vector StoreVector Store SupabasePrepare DocumentsDocument Default Data LoaderChunk with OverlapText Splitter Recursive Cha…Document EmbeddingsEmbeddings Open AiCount Indexed ChunksAggregateLoad Previous SnapshotGoogle SheetsCompute Drift vs Snapsh…CodeStamp Completion TimeDate TimePersist Run MetadataExecution DataEnrich with Reference D…Http RequestFold In Enrichment Fiel…SetSummarize Run StatsSetAppend Audit Row (Googl…Google SheetsSend 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.

AggregateCodeDate TimeDocument Default Data LoaderEmbeddings Open AiExecution DataExtract From FileGoogle DriveGoogle SheetsHttp RequestRemove DuplicatesSchedule TriggerSetSlackText Splitter Recursive Character Text SplitterVector Store Supabase

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.

  • Downloading and parsing CSV, XLSX, or PDF into JSON items
  • Archiving the processed file
  • Moving data between Google Drive, Google Sheets and Slack in a single run

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 (Google Sheets, Slack, Google Drive, HTTP / REST API). 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.

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.