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Northwind Helpline

Northwind Cloud, demo project

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Build a support agent that answers billing questions from our help center and escalates when it is not sure.

First build, v1. Preview is now on v14.

Plan38s$0.12
Database1m 4s$0.18
Agents1m 36s$0.41
Interface2m 32s$0.62
Checks41s$0.13

Built in 6m 31s for $1.46, inside the $1.20 to $2.00 estimate.

Northwind Helpline is ready. 7 conversations are waiting on a human, and 18 are still open.

Code

Every change the agents made, grouped by the request that caused it.

In the full product this opens an editor. This demo is read-only.

42 files, read only. 11 of them open here. The rest are listed so the tree is the real one, not a sample.

/
- README.md
- package.json
- next.config.ts
- tsconfig.json
app
- layout.tsx
- page.tsx
- globals.css
app/chat
- page.tsx
- message.tsx
app/dashboard
- page.tsx
- filters.tsx
- status-chip.tsx
app/inbox
- page.tsx
- conversation.tsx
- transcript.tsx
app/api/chat
- route.ts
app/api/escalations
- route.ts
app/api/invoices
- route.ts
app/api/health
- route.ts
agents
- intake.yaml
- answer.yaml
- grounding-checker.yaml
- escalation-router.yaml
- runtime.ts
lib
- escalations.ts
- help-center.ts
- conversations.ts
- queues.ts
- supabase.ts
- format.ts
db
- schema.sql
- policies.sql
- seed.sql
db/migrations
- 0001_init.sql
- 0002_escalation_reason.sql
tests
- chat.test.ts
- grounding.test.ts
- escalations.test.ts
- inbox.test.ts
public
- favicon.svg
- logo.svg
.github/workflows
- checks.yml

Changes

7be0d15pending, becomes v15Keep answers as specific as the source1 filenot applied yetnot decided yet
Asked for: Keep answers as close to the source as possible
- agents/answer.yaml+2-1not decided yetAccept Revert
Accept all 1 Revert all 1Demo action. Nothing is written: the verdict travels in the page address.
a41c9e2Add escalation reason to dashboard3 files2 days agook accepted, in v12
Asked for: Show me why each conversation was escalated, on the dashboard
- db/schema.sql+1-0ok accepted, in v12
- lib/escalations.ts+4-0ok accepted, in v12
- app/dashboard/page.tsx+3-0ok accepted, in v12
Shipped in v12. There is nothing to decide: rolling this back is a deploy action, on the Deploy tab.
c93f7a0Invoice download links in answers2 files5 hours agook accepted, in v14
Asked for: When someone asks for an invoice, give them the download link
- lib/help-center.ts+3-1ok accepted, in v14
- app/api/invoices/route.ts+3-0ok accepted, in v14
Shipped in v14. There is nothing to decide: rolling this back is a deploy action, on the Deploy tab.

Northwind Helpline, simulated. 5 of 5 passed.

ok passType check42 files, no errors2.14 s
ok passLintno warnings1.38 s
ok passUnit tests4 files, 11 tests3.26 s
ok passPreview healthpreview loads, 0 console errors0.84 s
ok passGrounding5 of 5 replies grounded after the fix1.91 s

Real change, from this repository

Everything above is simulated. This one is not: it is the commit that tightened the grounding criteria in the repo you are reading now, and its checks are live data.

b8ba98afix: the Grounding Checker no longer contradicts the demo, and results are signed2026-09-26

ok pass 6 of 6 labeled drafts land on the side we expected, at a bar of 60%

Open this commit on GitHub