Marketplace · API · x402

modelmarket.dev/x402/histor-check

HISTOR pre-flight for an MCP server: its signed record in the HISTOR transparency log — when the tool set was first seen, whether it changed, what the pattern scan found. Never contacts the server asked about.

Endpointhttps://modelmarket.dev/x402/histor-check
Trust✓ Verified callable · 100% uptime over 1 checks · ~653 ms
PricingPay per call with x402, no account. Call it to get an exact quote before paying.
networkeip155:8453
schemeexact
pay to0x1218ff36C5d2e3B6A565CdB1A8B1AcCFc606Ad0a
methodPOST
last updated2026-11-11T12:21:32.573Z

Use it

Call it (an x402 client pays automatically)

curl -i https://modelmarket.dev/x402/histor-check
# 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/x402-9ec24ae074076085

Search the whole marketplace from your agent (MCP)

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