Pay for APIs with USDC.
x402-powered payment gateway for AI agents. Providers receive USD payouts — no wallet needed.
Why Nonagon Link?
Instant USDC Settlement
Payments settle in USDC on Solana within seconds. Request USD payouts to your bank account anytime.
No Wallet Required
Integrate with just an API key. No crypto wallet management needed for providers.
Real-time Dashboard
Monitor payments, view analytics, and manage your API monetization in one place.
MCP Native
AI agents discover and pay for your API directly via MCP. Works with Claude Desktop, Claude Code, and any MCP-compatible client.
How It Works
Discovery
AI agent calls your API and receives a 402 Payment Required response.
Agent → ProviderQuote
Agent requests a payment quote from Nonagon Link and receives a nonce.
Agent → Nonagon LinkTransfer
Agent sends USDC on Solana with the nonce as a memo.
Agent → SolanaAuthorize
Nonagon Link verifies the transaction and issues an access token.
Nonagon LinkAccess
Agent uses the token to access your API — you get paid per call.
Agent → ProviderSettlement
Request a payout anytime — USDC is converted to USD and wired to your bank account.
Nonagon Link → CirclePricing
Pricing details are coming soon.
Ready to get started?
Closed beta access is coming soon. Join the waitlist to get notified.