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CantripCast better prompts
500 cantrips · 20 disciplines · 1 living spellbook

The prompt spellbook for the AI-era engineering team.

In tabletop lore a cantrip is a small spell you cast at will, for free, all day long. That's exactly what this is: 500 battle-tested prompts spanning the whole software lifecycle — paired with The Forge, an agent that rewrites your prompts to cut token cost and sharpen results, or conjures new ones on demand.

500READY CANTRIPS
20SDLC ROLES
10LIFECYCLE PHASES
✦ Cast at will ✦
Cantrip
Cast better prompts

One spellbook. Two superpowers.

Cast a ready cantrip for the moment — or let the Forge conjure one for you. Both work the same whether you write code, plan it, test it, or ship it.

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A curated Spellbook

500 cantrips organized by role and SDLC phase — from a PM's problem statement to a DBA's zero-downtime migration. Each is token-efficient, with fill-in-the-blank placeholders and usage tips.

The Forge agent

Paste a bloated prompt and watch it shrink — fewer tokens, clearer instructions, predictable output. Or describe a task and the Forge conjures a clean, reusable cantrip for your role and phase.

🗂️

Your own Grimoire

Save the cantrips your team relies on. They live on your device, ready offline. Install Cantrip as an app and your grimoire is a tap away on every machine.

How Cantrip assists you

It's built to become the thing a team opens reflexively — the way you'd reach for a dictionary, but for talking to AI.

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Find by what you're doing

Filter by your role and the phase you're in. Reviewing a PR? Designing an API? Writing a runbook? The right cantrip is two clicks away.

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Spend less per cast

The Forge shows you the token and cost delta of every rewrite. Trim the padding teams unknowingly pay for on every single request.

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Reusable by design

Placeholders turn each cantrip into a template. Fill the blanks, copy, cast — consistent quality across the whole team, every time.

Cantrip · a living spellbook for software teamsBuilt for the AI era

The Spellbook

500 cantrips across every discipline of modern software delivery.

500 cantripstap any card to open · fill · copy · forge
The Forge · prompt agent

Make every cantrip cheaper and sharper.

Optimize a prompt you already use, or conjure a new one for any role and phase. The Forge cuts wasted tokens and pins the output so results are predictable.

Your input
Role
SDLC phase
Output format
Result

The Forge uses live AI when available, and falls back to a built-in optimizer offline. ·

My Grimoire

Cantrips you've saved — stored privately on this device.

Own Cantrip. Forever.

No subscriptions, no per-seat creep. One payment, lifetime access for you and your team.

LIFETIME
Founding access
$49 once
One-time payment · yours to keep · free updates
  • All 500 cantrips across 20 roles & 10 SDLC phases
  • Unlimited Forge — optimize & conjure prompts on demand
  • Token & cost savings on every rewrite
  • Installable offline PWA — works on any device
  • Private on-device Grimoire for your team's favorites
  • Lifetime updates as new cantrips and roles are added

30-day money-back guarantee · secure checkout

Install Cantrip

Add it to your device for one-tap, offline access — like an app.

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