Frequently Asked Questions

x402 is the open payment protocol built on HTTP 402 by Coinbase and Cloudflare. It lets AI agents pay for API calls, data, and services with USDC stablecoins — instantly, programmatically, no accounts needed. All x402 transactions settle in USDC on chains like Base and Solana. Multiple independent facilitators are live, each processing millions of transactions. If you run an API or agent platform, x402 support is becoming table stakes.

Model Context Protocol (MCP) is the standard for connecting AI agents to external tools and data. An MCP server exposes your systems — databases, APIs, business logic — to agents like Claude and GPT with structured context and permissions. The MCP server market is projected at $10.4B by 2026. I build custom MCP servers with optional x402 payment gating.

Every project gets a fixed-price proposal within 48 hours of our discovery call. Scope and pricing depend on complexity — integration projects typically take 2-6 weeks. We accept USD wire or USDC.

A full x402 MCP server with agent payment capability. An x402 facilitator with EIP-712 signature verification and gasless USDC permit flow. A production Perplexity-style cascade demo — User pays Perplexity $0.01 USDC, Perplexity pays Bloomberg $0.002 USDC, 80% margin — with real USDC settlement on Base mainnet. Multi-chain USDC support across Base and Solana. Open source at github.com/stablecoinxyz/x402-radius-research.

Agencies staff your project with junior engineers learning x402 on your dime. I've already built the stack, know the V2 migration path, and track every protocol update. You get depth, not headcount. Most projects deliver in 2-6 weeks.

Both. I've built USDC settlement infrastructure on Base, Solana, and EVM chains for crypto-native clients, and I understand enterprise requirements — compliance, security, multi-protocol support. Good Meta Limited (Hong Kong) accepts payment in USD or USDC, and I use USDC for cross-border settlement with global clients — the same stablecoin rails I build for production systems.

Yes. The agentic payment landscape changes monthly — x402 V2, Google AP2, MPP (Tempo/Stripe IETF draft), and emerging protocols. I track all of it and have built infrastructure across the full stack. Many companies will need multi-protocol support. I help you architect for that from day one instead of rebuilding later.