x402 List

x402 Protocol Service Directory

SNTL Helium Intelligence

Blockchain ✓ VERIFIED

verified until 2026-08-17

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.

first settlement 2026-06-21 · $0 all-time · last settled 2026-07-05

BASE URL https://a2a.sntl.site WEBSITE https://sntl.site ENDPOINTS 1 NETWORK Solana ASSET UNKNOWN MEMBER SINCE 2026-06-25 MONITORED SINCE 2026-06-25

ASSESSMENT

updated 10m ago

Evidence-backed signals, not a single score. Click any chip for the proof. Measured values stay read-only; unknown is honest.

reliability 31.1%
uptime 24h
86.7%
uptime 7d
81.9%
uptime 30d
31.1%
uptime 90d
50.9%
response p95
5371ms
avg response
3433ms
total checks
2,666

Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.

compliance A (9/10): atomic price declared

9 of 10 x402 conformance checks pass; failing: atomic price declared. Full checklist below.

jump to compliance checklist

price $0.00 (p1 in Blockchain)
price (min)
$0.00
category percentile (min)
p1 in Blockchain
endpoints / prices
1 / 1
model
free
stability
100%
risk clean

No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.

domain age
-
registrar
-
hosting
custom
domain created
---

Identity facts, not a risk score.

traction $0.00 30d · 0 buyers
volume 30d
$0.00
buyers 30d
0
settlements 30d
0
first settlement
2026-06-21
last settlement
2026-07-05
top buyer share
-
trend 7d vs 30d
-
networks
solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147dw2N9d
volume all-time
$0
settlements all-time
0
median settlement 30d
-
max settlement 30d
-
settled via
-

Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.

Top buyer share is a concentration signal, not part of the ranking score.

WHAT IT DOES

ai-derived

No AI synthesis has been produced for this service yet.

ENDPOINTS

Service endpoints with HTTP method, path, description, pricing, and network
METHOD PATH DESCRIPTION PRICE NETWORK ASSET 402 CHANNEL
GET /api/v1/event/2u5G1DZ37cRCFbsyPuXeaMWmz5WtUMhshCLtvhpaLoG8BjtGf1YX8whyv6d81BuLp8s6rmhP7pMAKFMm4VcMUEwd $0.00 Solana UNKNOWN body (v1 style)
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) · 1 payload · click to expand
[
  {
    "code": "PAYMENT_REQUIRED",
    "asset": "USDC",
    "chain": "solana",
    "error": "x402 payment required",
    "links": {
      "docs": "https://x402.org",
      "facilitator": "https://facilitator.payai.network"
    },
    "price": "0.01",
    "accepts": [
      {
        "asset": "USDC",
        "payTo": "77jDxfGUbCUbJCRZfrmXcjQ2kT7MHe4oQ3ZUBzncBXCp",
        "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": "77jDxfGUbCUbJCRZfrmXcjQ2kT7MHe4oQ3ZUBzncBXCp",
    "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."
        }
      }
    }
  }
]

OVER TIME

All charts use the 30d selector; each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/sntl-helium-intelligence/price, /scores, /volume and /buyers. On-chain volume and distinct buyers are measured over the service's settlement address and are a conservative undercount (only settlements that reach a measured facilitator are counted). The on-chain series roll up hourly, so the latest day can be up to about an hour behind; distinct buyers are counted per payout address, so a service that settles to more than one address is an upper bound.

UPTIME
07-12 · uptime 22.2% · 4366ms avg07-13 · uptime 0.0%07-14 · uptime 0.0%07-15 · uptime 0.0%07-16 · uptime 0.0%07-17 · uptime 0.0%07-18 · uptime 0.0%07-19 · uptime 0.0%07-20 · uptime 0.0%07-21 · uptime 0.0%07-22 · uptime 0.0%07-23 · uptime 0.0%07-24 · uptime 0.0%07-25 · uptime 0.0%07-26 · uptime 0.0%07-27 · uptime 0.0%07-28 · uptime 0.0%07-29 · uptime 34.4% · 5827ms avg07-30 · uptime 21.1% · 5554ms avg08-03 · uptime 51.1% · 3107ms avg08-04 · uptime 0.0%08-06 · uptime 90.0% · 3154ms avg08-07 · uptime 59.5% · 4597ms avg08-10 · uptime 86.8% · 3794ms avg07-12 · uptime 22.2% · 4366ms avg07-13 · uptime 0.0%07-14 · uptime 0.0%07-15 · uptime 0.0%07-16 · uptime 0.0%07-17 · uptime 0.0%07-18 · uptime 0.0%07-19 · uptime 0.0%07-20 · uptime 0.0%07-21 · uptime 0.0%07-22 · uptime 0.0%07-23 · uptime 0.0%07-24 · uptime 0.0%07-25 · uptime 0.0%07-26 · uptime 0.0%07-27 · uptime 0.0%07-28 · uptime 0.0%07-29 · uptime 34.4% · 5827ms avg07-30 · uptime 21.1% · 5554ms avg07-31 · uptime 98.9% · 2854ms avg08-01 · uptime 97.8% · 3193ms avg08-02 · uptime 98.9% · 3026ms avg08-03 · uptime 51.1% · 3107ms avg08-04 · uptime 0.0%08-05 · uptime 95.1% · 1394ms avg08-06 · uptime 90.0% · 3154ms avg08-07 · uptime 59.5% · 4597ms avg08-08 · uptime 100.0% · 2683ms avg08-09 · uptime 95.6% · 4246ms avg08-10 · uptime 86.8% · 3794ms avg07-1208-10
30d UPTIME 31.1%
RESPONSE TIME
07-12 · 4366ms avg07-12 · 4366ms avg07-13 · 0ms avg07-13 · 0ms avg07-14 · 0ms avg07-14 · 0ms avg07-15 · 0ms avg07-15 · 0ms avg07-16 · 0ms avg07-16 · 0ms avg07-17 · 0ms avg07-17 · 0ms avg07-18 · 0ms avg07-18 · 0ms avg07-19 · 0ms avg07-19 · 0ms avg07-20 · 0ms avg07-20 · 0ms avg07-21 · 0ms avg07-21 · 0ms avg07-22 · 0ms avg07-22 · 0ms avg07-23 · 0ms avg07-23 · 0ms avg07-24 · 0ms avg07-24 · 0ms avg07-25 · 0ms avg07-25 · 0ms avg07-26 · 0ms avg07-26 · 0ms avg07-27 · 0ms avg07-27 · 0ms avg07-28 · 0ms avg07-28 · 0ms avg07-29 · 5827ms avg07-29 · 5827ms avg07-30 · 5554ms avg07-30 · 5554ms avg07-31 · 2854ms avg07-31 · 2854ms avg08-01 · 3193ms avg08-01 · 3193ms avg08-02 · 3026ms avg08-02 · 3026ms avg08-03 · 3107ms avg08-03 · 3107ms avg08-04 · 0ms avg08-04 · 0ms avg08-05 · 1394ms avg08-05 · 1394ms avg08-06 · 3154ms avg08-06 · 3154ms avg08-07 · 4597ms avg08-07 · 4597ms avg08-08 · 2683ms avg08-08 · 2683ms avg08-09 · 4246ms avg08-09 · 4246ms avg08-10 · 3794ms avg08-10 · 3794ms avg07-1208-10
AVG RESP 3431ms
PRICE (captured 402, USD)
07-11 · $007-29 · $008-10 · $0$007-1108-10
SUB-SCORES (uptime + x402 compliance)
07-13 uptime: 77.6% compliance: 82% checks07-14 uptime: 74.3% compliance: 82% checks07-15 uptime: 70.6% compliance: 82% checks07-16 uptime: 67.2% compliance: 82% checks07-17 uptime: 63.7% compliance: 90% checks07-18 uptime: 61.7% compliance: 90% checks07-19 uptime: 59.0% compliance: 90% checks07-20 uptime: 56.6% compliance: 90% checks07-21 uptime: 54.4% compliance: 90% checks07-22 uptime: 52.1% compliance: 90% checks07-23 uptime: 50.3% compliance: 90% checks07-24 uptime: 48.5% compliance: 90% checks07-25 uptime: 46.0% compliance: 90% checks07-26 uptime: 42.6% compliance: 90% checks07-27 uptime: 39.2% compliance: 90% checks07-28 uptime: 35.8% compliance: 90% checks07-29 uptime: 33.3% compliance: 90% checks07-30 uptime: 30.9% compliance: 90% checks07-31 uptime: 31.7% compliance: 90% checks08-01 uptime: 31.7% compliance: 90% checks08-02 uptime: 31.7% compliance: 90% checks08-03 uptime: 30.4% compliance: 90% checks08-04 uptime: 27.5% compliance: 90% checks08-05 uptime: 25.5% compliance: 90% checks08-06 uptime: 25.8% compliance: 90% checks08-07 uptime: 27.9% compliance: 90% checks08-08 uptime: 29.8% compliance: 90% checks08-09 uptime: 31.3% compliance: 90% checks08-10 uptime: 31.1% compliance: 90% checksuptimecompliance07-1308-10

checklist grew 11->14 on 2026-07-28; a step here is a metric change, not a regression

PILLARS OVER TIME (measured)

Measured site and economics pillars from the assessment history, so the latest value shown elsewhere on this page reads as a point on a trend rather than a permanent state.

VOLUME (on-chain settlement, USD)
no on-chain volume yet
DISTINCT BUYERS
no distinct buyers yet

COMPLIANCE

9/10 checks pass · grade A · failing: atomic price declared

last 402 captured 2026-07-29 · last up 2026-08-10

  • 402 payload captured
  • accepts[] array present
  • payTo address recoverable
  • payTo at accepts[0].payTo (conformant shape)
  • payTo is a valid on-chain address
  • atomic price declared
  • atomic price in a sane range
  • asset (token) address declared
  • network resolves to CAIP-2
  • payment scheme declared
  • served over HTTPS
  • declares the current x402 version (2)
  • EIP-712 domain parameters present on every EVM entry
  • x402 v2 envelope delivered in the payment-required header

SITE PILLARS

  • homepage reachable
  • openapi doc
  • pricing page
  • llms.txt
  • robots.txt
  • terms page
recent checks (18) live · click to expand
TIME STATUS RESP CAUSE
● OK 2289ms
● OK 2805ms
● OK 1771ms
● OK 2010ms
● OK 2380ms
○ DOWN 1737ms network: fetch failed
● OK 2658ms
● OK 3127ms
● OK 3333ms
● OK 1967ms
● OK 2128ms
● OK 2488ms
● OK 3538ms
○ DOWN 1464ms network: redirect to unsafe host blocked
● OK 2524ms
○ DOWN 575ms network: redirect to unsafe host blocked
● OK 3491ms
● OK 4386ms

EMBED THIS BADGE

Show that SNTL Helium Intelligence is monitored on x402-list. Paste this on your site or README, it links back to this live listing.

SNTL Helium Intelligence listed on x402-list
status
SNTL Helium Intelligence uptime on x402-list
live uptime
// HTML
<a href="https://x402-list.com/services/sntl-helium-intelligence?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/sntl-helium-intelligence.svg" alt="SNTL Helium Intelligence listed on x402-list" height="28">
</a>
// Markdown
[![SNTL Helium Intelligence on x402-list](https://x402-list.com/badge/sntl-helium-intelligence.svg)](https://x402-list.com/services/sntl-helium-intelligence?utm_source=badge&utm_medium=referral&utm_campaign=embed)
// HTML · live uptime variant
<a href="https://x402-list.com/services/sntl-helium-intelligence?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/sntl-helium-intelligence.svg?data=uptime" alt="SNTL Helium Intelligence uptime on x402-list" height="28">
</a>

RUN THIS SERVICE?

Keep this listing accurate: propose changes to the name, description, website, category or add new endpoints to monitor. Ownership is verified with a domain proof and every change is reviewed manually; measured data stays read-only.

[ update this listing ]

To request delisting, email [email protected] or update your listing at /services/sntl-helium-intelligence/update.