x402 census · signals.nsgoods.org · b5afde4e31be · JSON
GET /backtest
live
Walk-forward replay of the live multi-timeframe strategy over recent 1m history: win-rate and average forward return per BUY/SELL signal. Lets an agent measure recent edge before subscribing to the live signal stream (USDC on Base). Free preview: GET /signals/preview
Verdict: live. The unpaid GET reached a valid 402. The live amount equals the catalog price.
Facts from the catalogs
| Field | Value |
|---|---|
| URL | https://signals.nsgoods.org/backtest |
| Method | GET |
| Price | $0.25 USDC = 250000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 |
| Network | eip155:8453 (base) |
| payTo | 0xc87a06DEE4c0E85912296002617120BBfd5EF990 |
| Seller | signals.nsgoods.org |
| Catalogs | cdp (row updated 2026-10-02) |
| Listed since (lower bound) | 2026-10-02 (earliest catalog timestamp; catalogs report last-update times only) |
| Last catalog update | 2026-10-02 |
| CDP quality counters | 1 calls and 1 unique payers in 30 days, last call 2026-10-02 (catalog-reported, not verified on chain) |
| Category (keyword rule) | trading-signals |
| Templated path | no |
| x402Version in catalog | 2 |
| Service name / tags | nsgoods Crypto Signals (Kraken) |
Unpaid probe (census of 2026-10-22)
| Field | Value |
|---|---|
| Probed at | 2026-10-22T00:32:11.251Z |
| HEAD | 200 |
| GET | 402 |
| Verdict | live live: valid 402 to an unpaid GET |
| 402 carried in | header+body |
| x402Version in the 402 | 2 |
| accepts[0] | {"scheme":"exact","network":"eip155:8453","amount":"250000","payTo":"0xc87a06DEE4c0E85912296002617120BBfd5EF990","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","maxTimeoutSeconds":300,"extra":{"name":"USD Coin","version":"2"}} |
| Live amount equals catalog price | yes |
| Live payTo equals catalog payTo | yes |
| extensions.bazaar in the 402 | yes |
| PAYMENT-REQUIRED header | yes |
| WWW-Authenticate offer | none |
| Content type / server / CORS | application/json / nginx/1.18.0 (Ubuntu) / none |
| Latency | 375 ms |
| Error | Payment required |
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 | 9 |
| Payments | 18 |
| USDC volume | $0.53 |
| Median payment | $0.01 |
| First / last payment | 2026-07-09 / 2026-09-17 |
| Sampler-shaped share of payments | 100.0% |
| Payers that are not samplers | 0 |
| Source | forensics-2026-09-30 |
| Address | 0xc87a06DEE4c0E85912296002617120BBfd5EF990 |
Declared input and output (extensions.bazaar)
{
"input": {
"method": "GET",
"queryParams": {
"forward": 30,
"pair": "BTC/USD",
"step": 5
},
"type": "http"
},
"output": {
"type": "json",
"example": {
"avg_return_pct": 0.18,
"best_pct": 1.42,
"forward_minutes": 30,
"generated_at": "2026-06-13T21:00:00+00:00",
"pair": "BTC/USD",
"sample": [
{
"entry": 64120.4,
"future": 64235.1,
"return_pct": 0.179,
"signal": "BUY",
"ts": "2026-06-13T18:25:00"
}
],
"signals_evaluated": 14,
"step_minutes": 5,
"win_rate_pct": 64.3,
"window_hours": 12,
"worst_pct": -0.71
}
}
}
Try it (unpaid: shows the 402)
curl -si -X GET 'https://signals.nsgoods.org/backtest' -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/b5afde4e31be/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"b5afde4e31be"} 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 signals.nsgoods.org.