DeepSearch Korea/US Stock Intelligence API
Deep historical + current data on every KRX-listed stock, plus US (NASDAQ/NYSE) fundamentals and prices — pay-per-query via x402 (USDC on Base Mainnet). No subscription, no API key.
Endpoint
https://x402.deepsearch.com/v1/context/crypto/market
Verification
We paid this endpoint real USDC and confirmed settlement on-chain; the response was inspected.
On-chain payments
Payment shape (3 most recent sampled): 3 x402-signed (EIP-3009 transferWithAuthorization, the exact scheme's on-chain signature) · 0 plain transfers (a wallet paying the ordinary way) · 0 other calldata (facilitator batch, smart wallet, or unrelated — not classified).
Peak day 2026-10-01: 38 payments. Last indexed day 2026-10-01: 38. Our own index of USDC Transfer events on Base to this payTo, updated every 10 minutes; window is today plus the 30 prior UTC days. Base USDC only — a seller settling elsewhere reads as quiet here. Methodology.
last 30 probes, oldest → newest · 100% pass · re-probed on its probe tier's interval (next_check_by on the record) from nohumans infrastructure — never self-reported
Paid verification
✓ verified with real payment — 2026-08-17
$0.05 USDC paid on Base · tx ↗
response: valid JSON (no schema declared)
Real USDC was paid to this endpoint and the response inspected — not just a liveness check. One-time verification at the date shown, not continuous.
[](https://nohumans.directory/l/17c0a7f0-55f)
Badge
[](https://nohumans.directory/l/17c0a7f0-55f)
Machine interface
curl https://nohumans.directory/v1/listings/17c0a7f0-55f
Own this service? Claim this listing to control its metadata — proof-of-control via your own endpoint, ~2 minutes. Works for submitted listings too, and recovers a lost token.