Stablecoin escrow and transfer verification on Arc mainnet
Express middleware for accepting payments in euros from humans via Stripe and USDC from AI agents via x402 on a single endpoint
Stage
Not given
Not given
Founded
Not given
Not given
Based in
Not given
DE
Pricing model
Not given
Freemium
Pricing
Free plan: up to 1,000 settled transfers per month and 10,000 payee checks per month; Growth plan: 0.10 USDC per settled transfer over 1,000, includes 100,000 payee checks, then 0.001 USDC each; Enterprise plan: contract pricing
Free core under Apache 2.0 license with both payment methods and Express integration. Pro Early Bird: 49 € including 19% VAT, one-time fee for 1 project, then 79 € (includes quotas, CSV payment log, webhook reconciliation, 12 months updates and support, delivery within 3 weeks or full refund). Team:
Key features
Payee verification with direct, escrow, or block decision
Transfer status and history tracking
Event webhooks for transfer lifecycle
TypeScript SDK for agent integration
MCP server for AI agents
Refund on non-delivery or expiry
Idempotency keys for safe retries
Rate limiting with plan-based quotas
Self-serve API key generation
Webhook signature verification
Single endpoint accepts both euro payments via Stripe and USDC payments via x402
Time-limited access model for human users paying in euros
Per-request billing for AI agents using USDC on x402
Cryptographic payment verification without holding funds
Local demo mode without accounts or real payments
Open source core under Apache 2.0 license
Works with Base Sepolia testnet and Stripe test mode
What makes it different
Transfers lock on-chain and release only with recipient proof, preventing wrong-wallet errors
Integrates AI agents through MCP server alongside REST API and TypeScript SDK
Automatic refunds after expiry without manual intervention
Free tier supports 1,000 transfers and 10,000 payee checks per month
Unified payment solution for both human users and AI agents from a single endpoint
Funds go directly to your accounts; Meterdoor never touches the money
Open source core provides transparency and no ongoing licensing costs
Ready for production with AI agents despite their current low payment volume
Local testing without creating accounts or handling real money
Notol
Meterdoor