Decentralized Developer Hub

Monetize APIs with
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PayPI is a decentralized marketplace where developers publish, discover, and consume APIs with instant stablecoin settlement, Soroban-managed subscriptions, and automated developer workflows.

API Key ManagementActive
x402-client-keysk_live_paypi_xusdc_9103...
Soroban Contract:CC...SUBSCRIPTION_REGISTRY...XYZ
Recent Settlement$0.01 USDC
Asset:USDC (Testnet)
Ledger:#4930129
Interactive Simulator

Experience Stellar x402 billing live

Click the simulate button to watch a HTTP weather-feed request hit the API gateway, return a payment request, get signed by the local Stellar wallet, and settle instantly on-chain.

< 2s Latency
Decentralized Auth
Soroban Gateway Emulator
IDLE
⚡

API Client Sandbox

Press the button to emulate an on-demand API query and payment cycle.

Execution Logs
Idle console logs. Run simulation to stream...
The Architecture

Unified Blockchain & Automations

We combine Stellar’s rapid micro-transactions with Soroban’s code sandboxes and automated webhook triggers.

x402 Micropayments

Charge per-request stablecoins dynamically. High-performance Express API gateways yield frictionless checkout.

Soroban Entitlements

De-risk subscription management by anchoring user access rights, payouts, and billing logic to public ledgers.

Webhook Automations

Sync repository schemas with GitHub, pipe real-time subscription alerts to Slack, and alert billing events on email.

Cost Efficiency Auditing

Stablecoin Settlement Calculator

See how much you save on payment gateway and clearinghouse fees with Stellar.

Monthly API Request Volume250,000 reqs
Average Fee Per Request$0.020 USDC
Traditional Processor Fees$2675.00
Stellar x402 Protocol Cost$3.00
Est. Net Monthly Savings$2672.00 USDCBypasses 3% credit card fees
Platform Pricing

Simple, transparent developer plans

Get started for free on testnet or scale to millions of transactions.

Sandbox

Perfect for building and testing integrations.

$0/mo
  • Testnet Access
  • 10 API Registrations
  • Basic telemetry logs
  • Standard Rate Limits

Publisher Pro

Popular

For professional SaaS operations.

$49/mo
  • Pubnet & Testnet Access
  • Unlimited API publishes
  • Advanced Webhooks & Slack alerts
  • Custom Soroban registry contract
  • 99.9% uptime SLA
FAQ

Frequently Asked Questions

How do x402 micropayments work on Stellar?+
What role do Soroban smart contracts play?+
How do developers consume subscribed APIs?+
How do I setup my wallet to subscribe?+