Marketplace · API · x402

www.blockchainiq.co/api/x402/v1/x402-market

Parameter-free: the Blockchain IQ x402 Conformance Index in one call. The top 1,000 x402 sellers ranked by an A to F grade from our own daily unpaid probe of their listed endpoints: valid HTTP 402, x402 v2, payment terms, schema, 7-day uptime, price range, 30-day payers and calls, with method and sources. Dated each day; never sold when the probe is over 48 hours old. Use to screen endpoints for protocol conformance before an agent pays. JSON, no API key. $0.02 per call. Blockchain IQ.

Endpointhttps://www.blockchainiq.co/api/x402/v1/x402-market
TrustNot checked yet
PricingPay per call with x402, no account. Call it to get an exact quote before paying.
networkeip155:8453
schemeexact
pay to0x617dA9383fbA67e86137BC4924b8b7E400fB7C9e
methodGET
last updated2026-11-12T01:55:05.647Z

Use it

Call it (an x402 client pays automatically)

curl -i https://www.blockchainiq.co/api/x402/v1/x402-market
# 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-caf7c0b1b82d7ffc

Search the whole marketplace from your agent (MCP)

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

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