x402 List

x402 Protocol Service Directory

●

SNTL Helium Intelligence

Blockchain

Pay-per-query intelligence over the Helium DePIN network, settled on Solana. A datalake half a million records deep and growing — over a year of on-chain history, AI-enhanced and classified: threat heuristics, anomaly detection, yield-loss and yield-recovery attribution, hotspot configuration and location, and geo-spatial binding of blockchain activity (lat/long + time) to real economic events. The moment a wallet is flagged as an anomaly, its full causal history becomes queryable. Agents POST read-only SQL and receive structured rows — flat $0.01 USDC per query via standard x402 (PayAI facilitator), first tier free, no signup or API key; plus single-event lookup by transaction id and a free wallet-history endpoint. Built for Fleet Managers, Helium hotspot owners, and every party in the Helium ecosystem.

UPTIME 24H 100% │ 7D 100% │ 30D 100%
BASE URL https://a2a.sntl.site │ WEBSITE https://sntl.site │ ENDPOINTS 1 │ NETWORK Solana │ ASSET USDC │ MEMBER SINCE 21 Jun 2026 │ MONITORED SINCE 01 Jun 2026

ENDPOINTS

Service endpoints with HTTP method, path, description, pricing, and network
METHOD PATH DESCRIPTION PRICE NETWORK ASSET
GET /api/v1/event/2u5G1DZ37cRCFbsyPuXeaMWmz5WtUMhshCLtvhpaLoG8BjtGf1YX8whyv6d81BuLp8s6rmhP7pMAKFMm4VcMUEwd $0.000 Solana USDC
1 endpoints

REQUEST / RESPONSE EXAMPLE

An unpaid request to GET /api/v1/event/2u5G1DZ37cRCFbsyPuXeaMWmz5WtUMhshCLtvhpaLoG8BjtGf1YX8whyv6d81BuLp8s6rmhP7pMAKFMm4VcMUEwd returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.

// request
curl -i 'https://a2a.sntl.site/api/v1/event/2u5G1DZ37cRCFbsyPuXeaMWmz5WtUMhshCLtvhpaLoG8BjtGf1YX8whyv6d81BuLp8s6rmhP7pMAKFMm4VcMUEwd'
// 402 response (captured by monitor)
[
  {
    "code": "PAYMENT_REQUIRED",
    "asset": "USDC",
    "chain": "solana",
    "error": "x402 payment required",
    "links": {
      "docs": "https://x402.org",
      "subscribe": "https://moonpay.hel.io/deposit/2f8f1f3d-cae4-4f15-a14c-04f707936af8",
      "facilitator": "https://docs.cdp.coinbase.com/x402"
    },
    "price": "0.01",
    "accepts": [
      {
        "asset": "USDC",
        "payTo": "DDxMHJceaNE9tWohpauakaek8Q7P7CJ2jkzhiHRybCmt",
        "price": "$0.01",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "resource": "/api/v1/event/2u5G1DZ37cRCFbsyPuXeaMWmz5WtUMhshCLtvhpaLoG8BjtGf1YX8whyv6d81BuLp8s6rmhP7pMAKFMm4VcMUEwd",
        "description": "Sentinel Helium intelligence asset"
      }
    ],
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "payment": {
      "header": "x-payment-signature",
      "instructions": "Transfer 0.01 USDC to the treasury on Solana mainnet, then retry the request with header `x-payment-signature: <transaction_signature>`."
    },
    "resource": "/api/v1/event/2u5G1DZ37cRCFbsyPuXeaMWmz5WtUMhshCLtvhpaLoG8BjtGf1YX8whyv6d81BuLp8s6rmhP7pMAKFMm4VcMUEwd",
    "treasury": "DDxMHJceaNE9tWohpauakaek8Q7P7CJ2jkzhiHRybCmt",
    "extensions": {
      "bazaar": {
        "info": {
          "name": "SNTL Helium Intelligence",
          "tags": [
            "helium",
            "depin",
            "solana",
            "enriched-events",
            "intelligence"
          ],
          "category": "data",
          "description": "Enriched, AI-classified Helium / Solana DePIN intelligence — threat, anomaly, wallet & forensic assets."
        }
      }
    }
  }
]

UPTIME

06-25 · uptime 100.0% · 1106ms avg06-26 · uptime 100.0% · 1114ms avg06-2506-26
RESPONSE TIME
06-25 · 1106ms avg06-25 · 1106ms avg06-26 · 1114ms avg06-26 · 1114ms avg06-2506-26
30d UPTIME 100%
UPTIME 30D 100%
AVG RESP 1112ms
TOTAL CHECKS 138

RECENT CHECKS

TIME STATUS RESP
● OK 1248ms
● OK 1008ms
● OK 1404ms
● OK 1348ms
● OK 1085ms
● OK 734ms
● OK 1206ms
● OK 1636ms
● OK 1133ms
● OK 1057ms
● OK 1051ms
● OK 1215ms
● OK 1374ms
● OK 753ms
● OK 790ms
15 of 138 checks

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