the402 endpoint detail

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agents.x402stock.xyz v1 exchanges

https://agents.x402stock.xyz/api/v1/exchanges

answers 402

Reference list of US equity exchanges and market centers with names, MICs, operating MICs, and SIP participant IDs. From x402stock, a pay-per-call market & economic data API for AI agents. No API key or account; pay in USDC via x402.

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.01
Network
base
Pay to
0xfdb4b511f6ae1f270776e500b3360217d5e7ed03
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
376 ms
Payment options
1 usable of 1
Last checked
2026-09-06T01:17:59.188Z (19d ago)
Category
ai-inference

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fagents.x402stock.xyz%2Fapi%2Fv1%2Fexchanges"