Marketplace · API · x402

x402.ochinimus.app/api/tx-precheck

Transaction precheck: simulated balance changes, programs or contracts, approvals, new accounts, token-risk reads and warnings. Use when you need to answer: What would this Solana or Base transaction do to the wallet that signs it, before it is signed? 503 if it cannot simulate: not charged.

Endpoint	`https://x402.ochinimus.app/api/tx-precheck`
Trust	Not checked yet
Pricing	Pay per call with x402, no account. Call it to get an exact quote before paying.
network	solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp
scheme	exact
pay to	4a8o45skRPcyjAdyR8yES215Swvh8uTpZD6KLarhxCJ7
method	GET
last updated	2026-11-09T14:28:43.006Z

Use it

Call it (an x402 client pays automatically)

curl -i https://x402.ochinimus.app/api/tx-precheck
# 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/x402-97e37af39a1468f2

Search the whole marketplace from your agent (MCP)

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