Automation library · Content

Route AI tasks between Anthropic Claude models with Postgres

Started by another system calling it, and works across Postgres. It hands the judgement calls to Claude. 20 steps, 1 branch: a working afternoon to understand properly.

MediumCalls a model: Claude

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20 stepsMedium: a working afternoon
1Branch: places the flow splits
0Loops or waits
1Service it connects to

The flow

Starts it 3Model 7Logic 6Service 4

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

  1. 1Task Input WebhookWebhookStarts it
  2. 2Weekly Self-Tuning ScheduleSchedule triggerStarts it
  3. 3Anthropic Chat Model - ClassifierLm Chat AnthropicModel
  4. 4Classification Output ParserOutput Parser StructuredModel
  5. 5Anthropic Chat Model - SmallLm Chat AnthropicModel
  6. 6Anthropic Chat Model - LargeLm Chat AnthropicModel
  7. 7Workflow ConfigurationSetLogic
  8. 8Fetch Historical DataPostgresService
  9. 9Task Classifier AgentAgentModel
  10. 10Small Model ExecutionAgentModel
  11. 11Large Model ExecutionAgentModel
  12. 12Aggregate Success MetricsAggregateLogic
  13. 13Load Policy RulesPostgresService
  14. 14Prepare Telemetry DataSetLogic
  15. 15Calculate Routing AdjustmentsCodeLogic
  16. 16Policy Engine DecisionCodeLogic
  17. 17Store TelemetryPostgresService
  18. 18Update Policy RulesPostgresService
  19. 19Route by Model SelectionSwitchLogic
  20. 20Return ResponseRespond To WebhookStarts it

How it's built

Starts on
Another system calling it
Steps
20, with 1 branch
Size
Medium: a working afternoon
Connects to
Postgres
Model
Claude

Questions

What does it need to run?

An n8n account, plus your own Postgres 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. 20 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 20 steps before you point it at anything that matters.