Is your idea worth building as a paid x402 endpoint?
AI agents are starting to pay each other in USDC — per request, no login, no subscription. Before you spend a weekend building the wrong thing, run the free 10-minute Idea-Fit Checklist. No code, no wallet, no protocol rabbit hole.
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
Argue yourself out of it: would an agent really pay?
Argue yourself out of it: would an agent really pay?
3 · Score it
The free checklist. Honest number, not a hopeful one.
The free checklist. Honest number, not a hopeful one.
4 · Build it
12+/16? That's what the Starter Kit is for.
12+/16? That's what the Starter Kit is for.
The ladder
Free tells you if. Tier 1 shows you how to build. Tier 2 shows you how to get found.
Free
Idea-Fit Checklist
$0
- 10-minute, no-code worksheet
- Scores your idea 0–16
- Endpoint sketch worksheet
- 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
Distribution Playbook
$149 founding
- Every directory, in the right order
- The manual steps nobody documents
- Submission-packet template
- Get found, not just built
Payments in USD via card, or USDC on Base. Instant download after checkout.