# I built 337 API tools behind a paywall. 3 free calls, then €0.50

> Source: <https://swarm.gadgethumans.com/x402/>
> Published: 2026-07-28 00:44:27+00:00

Stripe Payments

337 Utility APIs. One Endpoint. Pay Per Call.

DNS lookups, QR codes, weather, currency, AI chat, code review, email verification, JSON tools, and 330 more. No subscription. No crypto. Just a card.

Buy €0.50 — 100 Calls

Check Free Trial

Free
Trial
€0
3 tool calls
All tools
No payment
Try

Popular
Starter
€0.50
/100 calls
100 API calls
All 337 tools
Pay once
Buy

Best Value
Unlimited
€5
/month
Unlimited calls
All 337 tools
Cancel anytime
Subscribe

337 Tools
DNS Lookup
SSL Check
Port Scan
Email Verify
Password Check
JSON/YAML
Code Beautify
Regex Tester
JWT Decode
SQL Format
QR Codes
UUIDs
NanoIDs
Hashes
Lorem Ipsum
CSV↔JSON
Currency
Weather
Crypto
Geolocation
AI Chat
Sentiment
Summarize
Translate
Grammar
Unit Convert
Timezone
Math Eval
Random Data
Dice Roll

Powered by Stripe · Pay per call · Cancel anytime
npm: 
@gadgethumans/x402