Marketplace · API · x402

preflight--preflight-api-api.us-east.modal.run/v1/sim/deep

Deep transaction simulation (anvil fork: gas, balance deltas, traces)

Endpointhttps://preflight--preflight-api-api.us-east.modal.run/v1/sim/deep
TrustNot checked yet
PricingPay per call with x402, no account. Call it to get an exact quote before paying.
networkeip155:8453
schemeexact
pay to0x5515f59a30fe2b9152cd5648a3a0d8c30c837d41
methodPOST
last updated2026-11-13T21:32:25.488Z

Use it

Call it (an x402 client pays automatically)

curl -i https://preflight--preflight-api-api.us-east.modal.run/v1/sim/deep
# 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-a0c9fe9ed617e39e

Search the whole marketplace from your agent (MCP)

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

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