Marketplace · API · x402

kushbitx.com/api/preflight

One check before money moves on Base. Simulates the unsigned transaction, decodes approvals and transfers, screens the token and the recipient or spender, and applies a protected SpendGuard policy when given. Returns ALLOW, REVIEW or BLOCK with sourced findings. Fail-closed: no ALLOW unless every check ran. Does not detect prompt injection; Protected SpendGuard can cap what an agent pays, but does not detect it either.

Endpointhttps://kushbitx.com/api/preflight
TrustNot checked yet
PricingPay per call with x402, no account. Call it to get an exact quote before paying.
networkeip155:8453
schemeexact
pay to0x0d68028d06af13379C872FEE032568B4Be712f22
methodPOST
last updated2026-11-13T08:23:54.215Z

Use it

Call it (an x402 client pays automatically)

curl -i https://kushbitx.com/api/preflight
# 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/x402-7f02a8686a665434

Search the whole marketplace from your agent (MCP)

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