Pillar

Tutorials

Step-by-step builds of useful tools using AI and automation.

Build a research agent with the Perplexity API in one evening

You can build a working perplexity api research agent in one evening by scoping the problem, using Perplexity’s Agent API presets, and wiring a simple plan→search→read→extract→verify→cite loop in a single script. This tutorial walks through setup, the Agent API “define the run” flow, a minimal Python implementation, and how to extend it with background runs and internal knowledge bases.

May 31, 2026

Tutorials·8 min read

Automate your invoicing with Stripe and a 50‑line script

This tutorial shows how to automate invoicing with Stripe using a ~50‑line Python script, wired to a simple CSV or Airtable export. You’ll see how to validate customer data, create invoice items, generate and finalize invoices, and optionally send them automatically. We’ll keep Stripe as the billing engine, your spreadsheet as the source of record, and avoid brittle one‑off hacks that break as you grow.

May 27, 2026