Automation library · AI assistants

Build a Slack knowledge graph with Claude and Neo4j

Started by another system calling it. It calls services over plain HTTP rather than through connectors. It hands the judgement calls to Claude. 18 steps, 2 loops or waits: a working afternoon to understand properly.

MediumCalls a model: Claude

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18 stepsMedium: a working afternoon
0Branches: places the flow splits
2Loops or waits
0Services by connector: it calls them over plain HTTP

The flow

Starts it 3Model 4Logic 9Service 2

The steps in the order they run, from what starts it.

  1. 1Webhook - Chat Message IngestWebhookStarts it
  2. 2Schedule - Poll Slack Every 15 minSchedule triggerStarts it
  3. 3Anthropic Claude - Entity Extractor ModelLm Chat AnthropicModel
  4. 4Anthropic Claude - Relationship Enricher ModelLm Chat AnthropicModel
  5. 5Normalise Message PayloadSetLogic
  6. 6AI - Entity & Relationship ExtractorAgentModel
  7. 7AI - Relationship Enrichment & WeightingAgentModel
  8. 8Python - Noise Filter & Signal TaggingCodeLogic
  9. 9JS - Merge & Structure Knowledge GraphCodeLogic
  10. 10Filter - Keep Relevant Messages OnlyFilterLogic
  11. 11Wait For DataWaitLogic
  12. 12Wait - API Rate Limit BufferWaitLogic
  13. 13JS - Validate Graph IntegrityCodeLogic
  14. 14Filter - Valid Graphs OnlyFilterLogic
  15. 15Neo4j - Upsert Nodes & EdgesHttp RequestService
  16. 16Google Sheets - Append Audit Log RowHttp RequestService
  17. 17JS - Build Success ResponseCodeLogic
  18. 18Webhook Response - 200 OKRespond To WebhookStarts it

How it's built

Starts on
Another system calling it
Steps
18, 2 loops or waits
Size
Medium: a working afternoon
Connects to
Nothing by connector; it calls services over plain HTTP
Model
Claude

Questions

What does it need to run?

An n8n account, and a key for Claude. You connect your own accounts after importing it; none are included.

What starts it?

It starts on another system calling it.

Does it use AI?

Yes. It calls Claude. Model calls are billed by the provider, not by n8n.

How long does it take to set up?

Plan an afternoon. 18 steps is enough that you should read each one before running it.

How do I import it?

Copy the workflow, open a new workflow in n8n and paste. The steps appear on the canvas, ready for your own accounts.

Before you run it

Nothing here has been tested by us. It is somebody's working automation, read and described from its own steps. Treat the connections it wants as a list of accounts it will touch, and read the 18 steps before you point it at anything that matters.