x402 census · alphapipeline-eu.onrender.com · 6b14ca4ad7db · JSON
GET /v1/prediction/hip4-alerts/subscribe
unprobed
[EXPERIMENTAL] Subscribe a webhook to receive push notifications when a HIP-4 outcome's probability jumps past a configurable threshold, or a new market appears - so an agent no longer has to poll hip4-snapshot itself. Polls Hyperliquid every ~5 minutes; not a true real-time feed. GET with query params, not JSON body - secret travels in the URL. See free GET /v1/prediction/hip4-alerts/event-types…
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://alphapipeline-eu.onrender.com/v1/prediction/hip4-alerts/subscribe |
| Method | GET |
| Price | $0.02 USDC = 20000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 |
| Network | eip155:8453 (base) |
| payTo | 0x2bcfA4F7E1fA5E96934846A7dEa623398Ed7f752 |
| Seller | alphapipeline-eu.onrender.com |
| Catalogs | cdp (row updated 2026-09-30) |
| Listed since (lower bound) | 2026-09-30 (earliest catalog timestamp; catalogs report last-update times only) |
| Last catalog update | 2026-09-30 |
| CDP quality counters | 1 calls and 1 unique payers in 30 days, last call 2026-09-30 (catalog-reported, not verified on chain) |
| Category (keyword rule) | trading-signals |
| Templated path | no |
| x402Version in catalog | 2 |
| Service name / tags | AlphaPipeline HIP-4 Alerts · prediction-market, hyperliquid, hip4, webhook, pre-trade-signal |
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 | 4 |
| Payments | 50 |
| USDC volume | $1.24 |
| Median payment | n/a |
| First / last payment | 2026-09-13 / 2026-09-30 |
| Sampler-shaped share of payments | n/a |
| Payers that are not samplers | n/a |
| Source | blockscout-sample — newest page of inbound ERC-20 transfers only (<=50); counts are a floor, not a total |
| Address | 0x2bcfA4F7E1fA5E96934846A7dEa623398Ed7f752 |
Declared input and output (extensions.bazaar)
{
"input": {
"method": "GET",
"queryParams": {
"event_types": [
"hip4.prob_jump"
],
"secret": "replace-with-your-own-32-byte-random-secret",
"underlying": "BTC",
"webhook_url": "https://example.com/webhooks/alphapipeline"
},
"type": "http"
},
"output": {
"type": "json",
"example_truncated": true,
"chars": 541
}
}
Try it (unpaid: shows the 402)
curl -si -X GET 'https://alphapipeline-eu.onrender.com/v1/prediction/hip4-alerts/subscribe' -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/6b14ca4ad7db/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"6b14ca4ad7db"} 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 alphapipeline-eu.onrender.com.