# Building Nod With Vercel And Amazon Aurora PostgreSQL

> Source: <https://dev.to/madebyaman/building-nod-with-vercel-and-amazon-aurora-postgresql-4e8g>
> Published: 2026-06-29 18:34:31+00:00

Nod is an approval API for AI agents, scripts, and workflows.

The idea is simple:

We built the web app on **Vercel**. The dashboard lets teams manage:

For the database, we used **Amazon Aurora PostgreSQL**. Nod needs a strong relational database because approval data must be correct. An approval is not just a UI card. It has a lifecycle.

``` php
pending -> approved
pending -> rejected
pending -> expired
pending -> canceled
```

Aurora stores the source of truth:

The backend runs on AWS with Lambda workers. One worker sends Slack notifications. Another sends signed callbacks. Another expires old approvals.

A typical flow looks like this:

``` php
App or agent
  -> Nod API
  -> Aurora PostgreSQL
  -> Slack or web approval
  -> Signed callback
  -> App continues
```

Vercel helped us move fast on the user experience. Aurora gave us the reliable data layer needed for real approvals. Together, they helped us build Nod as infrastructure, not just a demo.