x402 census · api.cryptoetfsentinel.com · c56e5cf0e6a5 · JSON
GET /v1/events
unprobed
Crypto ETF Sentinel — Activity feed of recent notable SEC filings and comment letters for US spot crypto ETFs (Bitcoin, Ethereum, Solana, XRP and more; last 60 days by default): S-1, 424B, 8-A12B, CERT, EFFECT and review correspondence, stage-filtered to drop trading-stage housekeeping. Use when a monitoring agent needs a 'what changed in crypto ETF regulation' heartbeat. Optional days and limit.
Verdict: not verified by an unpaid GET. not probed yet. This says nothing about whether the route works when called as declared.
Facts from the catalogs
| Field | Value |
|---|---|
| URL | https://api.cryptoetfsentinel.com/v1/events |
| Method | GET |
| Price | $0.10 USDC = 100000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 |
| Network | eip155:8453 (base); also accepts solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| payTo | 0x169Bf49c6ee5A179190121Ab8D180B50e31683d1 |
| Seller | api.cryptoetfsentinel.com |
| Catalogs | cdp (row updated 2026-09-06) |
| Listed since (lower bound) | 2026-09-06 (earliest catalog timestamp; catalogs report last-update times only) |
| Last catalog update | 2026-09-06 |
| CDP quality counters | 2 calls and 1 unique payers in 30 days, last call 2026-09-06 (catalog-reported, not verified on chain) |
| Category (keyword rule) | crypto-data |
| Templated path | no |
| x402Version in catalog | 2 |
| Service name / tags | none |
Unpaid probe (census of )
| Field | Value |
|---|---|
| Probe | not probed in this build |
No hourly re-probe has reached this resource yet; the cron covers a rotating slice of 150 per hour.
On-chain facts for the payTo (public address)
| Field | Value |
|---|---|
| Distinct payers | 6 |
| Payments | 10 |
| USDC volume | $0.64 |
| Median payment | $0.05 |
| First / last payment | 2026-07-02 / 2026-09-29 |
| Sampler-shaped share of payments | 100.0% |
| Payers that are not samplers | 0 |
| Source | forensics-2026-09-30 |
| Address | 0x169Bf49c6ee5A179190121Ab8D180B50e31683d1 |
Declared input and output (extensions.bazaar)
{
"input": {
"method": "GET",
"queryParams": {
"days": 60,
"limit": 15
},
"type": "http"
},
"output": {
"type": "json",
"example": {
"data": [
{
"cik": "0002090011",
"company": "21Shares Hyperliquid ETF",
"crypto": "hyperliquid",
"description": "21Shares Hyperliquid ETF certified for exchange listing",
"event_type": "filing",
"filing_type": "CERT",
"link": "https://www.sec.gov/Archives/edgar/data/.../THYP_8A_Cert_2090011.pdf",
"timestamp": "2026-05-11T00:00:00+00:00"
}
],
"meta": {
"total": 1
}
}
}
}
Try it (unpaid: shows the 402)
curl -si -X GET 'https://api.cryptoetfsentinel.com/v1/events' -H 'accept: application/json'
The catalog declares GET. A 402 answer carries the payment requirements in the JSON body and, for x402 v2, base64 in the PAYMENT-REQUIRED header. This page never sends a payment.
Paid checks (x402, USDC on Base)
GET https://bazaar.agentexchange.work/r/c56e5cf0e6a5/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"c56e5cf0e6a5"} places this resource at the top of the report and search pages for 30 days for $1.00, labelled. Unpaid requests answer 402 with the terms. Pricing.
Catalog references: agentic.market (CDP Bazaar front end) · this record as JSON · all resources on api.cryptoetfsentinel.com.