Is your idea worth building as a paid x402 endpoint?
Your AI coder will build anything you ask. This checklist tells you what's actually worth building. Score your idea in 10 minutes — then hand the Starter Kit to Claude, Cursor, or your dev and let them ship it.
Free forever — scores your idea 0–16 with a plain go/no-go. We'll also send occasional x402 build tips; unsubscribe anytime.
Four moves — most people skip to step 4 and waste the weekend
1 · Notice
Spot an API-shaped asset you already have or use.
Spot an API-shaped asset you already have or use.
2 · Stress-test
Talk it through with your AI — then argue yourself out of it.
Talk it through with your AI — then argue yourself out of it.
3 · Score it
The free checklist. Trust the number, not the enthusiasm.
The free checklist. Trust the number, not the enthusiasm.
4 · Build it
12+? Drop the Starter Kit in your AI coder and ship.
12+? Drop the Starter Kit in your AI coder and ship.
By the time you've talked it through with your AI, you'll have that gut feeling whether to move forward — and a score to back it up.
The ladder
Free tells you if. Tier 1 shows you how to build. Tier 2 gives you everything — build + get found.
Free
Idea-Fit Checklist
$0
- 10-minute, no-code worksheet
- Scores your idea 0–16
- Talk through it with your AI — trust the score, not the hype
- Plain go/no-go
Tier 1 · most popular
x402 Server Starter Kit
$49
- Plain-English build guide (20 sections)
- Agent build-brief your AI coder executes
- Manifest, payment-config & discovery templates
- Payment-boundary & launch checklists
Tier 2 · everything
Complete Bundle
$99 founding
- Everything in Tier 1 — build guide, agent brief, all templates & checklists
- Distribution Playbook: top directories, in the right order
- The manual steps nobody documents
- Submission-packet template
Payments in USD via card, or USDC on Base. Instant download after checkout.