x402 census · seo.openverbs.com · f200db159cdd · JSON
POST /v1/historical-rank
live
Historical rank overview API - a monthly time series of a domain's Google organic and paid visibility: ranked keyword count, estimated traffic (ETV), traffic cost and position buckets (pos1/top3/top10/top100) for each month. For tracking a site's SEO trajectory, spotting traffic drops/recoveries and competitor trend analysis. Unknown domain returns an empty series.
Verdict: live. The unpaid GET reached a valid 402. The live amount equals the catalog price.
Facts from the catalogs
| Field | Value |
|---|---|
| URL | https://seo.openverbs.com/v1/historical-rank |
| Method | POST |
| Price | $0.18 USDC = 180000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 |
| Network | eip155:8453 (base) |
| payTo | 0xb3f4de103F34b99f0Da19B4F16D6B53a14C2194A |
| Seller | seo.openverbs.com |
| Catalogs | cdp (row updated 2026-10-16) |
| Listed since (lower bound) | 2026-10-16 (earliest catalog timestamp; catalogs report last-update times only) |
| Last catalog update | 2026-10-16 |
| CDP quality counters | 7 calls and 5 unique payers in 30 days, last call 2026-10-16 (catalog-reported, not verified on chain) |
| Category (keyword rule) | domains/dns |
| Templated path | no |
| x402Version in catalog | 2 |
| Service name / tags | · historical rank api, domain traffic history, seo trend api, organic traffic trend, keyword visibility history |
Unpaid probe (census of 2026-10-22)
| Field | Value |
|---|---|
| Probed at | 2026-10-22T00:26:20.119Z |
| HEAD | 402 |
| GET | 402 |
| Verdict | live live: valid 402 to an unpaid GET |
| 402 carried in | header |
| x402Version in the 402 | 2 |
| accepts[0] | {"scheme":"exact","network":"eip155:8453","amount":"180000","payTo":"0xb3f4de103F34b99f0Da19B4F16D6B53a14C2194A","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 | Payment id="JnMT4ORHWp_B9ukG38SOWjGm4lu1 |
| Content type / server / CORS | application/problem+json / n/a / none |
| Latency | 52 ms |
| Error | Payment is required (Historical rank overview API - a monthly time series of a domain's Google organic and paid visibili |
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 | 5 |
| Payments | 197 |
| USDC volume | $1.35 |
| Median payment | $0.01 |
| First / last payment | 2026-09-09 / 2026-09-30 |
| Sampler-shaped share of payments | 100.0% |
| Payers that are not samplers | 0 |
| Source | forensics-2026-09-30 |
| Address | 0xb3f4de103F34b99f0Da19B4F16D6B53a14C2194A |
Declared input and output (extensions.bazaar)
{
"input": {
"body": {
"languageCode": "en",
"locationCode": 2840,
"target": "github.com"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
}
Try it (unpaid: shows the 402)
curl -si -X POST 'https://seo.openverbs.com/v1/historical-rank' -H 'accept: application/json' -H 'content-type: application/json' --data '{}'
The catalog declares POST. 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/f200db159cdd/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"f200db159cdd"} 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 seo.openverbs.com.