Marketplace · API · x402

GrapeInTheTree/x402-playground

Interactive Go playground for the x402 payment protocol — learn, explore, and practice EIP-3009 & Permit2 flows with a bubbletea TUI on Base Sepolia

Endpointhttps://github.com/GrapeInTheTree/x402-playground
Trust100% uptime over 1 checks · ~642 ms
PricingPay per call with x402, no account. Call it to get an exact quote before paying.
docs urlhttps://github.com/GrapeInTheTree/x402-playground
authnone
sourcex402_registry

Use it

Call it (an x402 client pays automatically)

curl -i https://github.com/GrapeInTheTree/x402-playground
# 402 reply -> sign PAYMENT-REQUIRED with an x402 client (e.g. @x402/fetch) -> retry with PAYMENT-SIGNATURE

This listing as JSON

curl https://aipaygen.com/v1/catalog/api/4311

Search the whole marketplace from your agent (MCP)

{
  "mcpServers": {
    "aipaygen": {
      "url": "https://aipaygen.com/mcp"
    }
  }
}

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