x402 census · api.usenami.io · b8c8e9912c08 · JSON

GET /v1/backtest/data

live

Packaged funding-rate history for one crypto perpetual on one venue, bundled per time bucket at 1h/4h/1d granularity over up to 30 days — one paid call instead of stitching hundreds of hourly requests. Each bucket carries the average rate, sample count and average perp price. Order-book fields were withdrawn on 2026-09-16: include_orderbook=true is refused before payment, never silently ignored.

Verdict: live. The unpaid GET reached a valid 402 (confirmed by the re-probe of 2026-10-01).

Facts from the catalogs

Field Value

URL https://api.usenami.io/v1/backtest/data

Method GET

Price $0.05 USDC = 50000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Network eip155:8453 (base)

payTo 0x1538726707212F4dB3EB67cEc0910422A310475c

Seller api.usenami.io

Catalogs cdp (row updated 2026-09-18)

Listed since (lower bound) 2026-09-18 (earliest catalog timestamp; catalogs report last-update times only)

Last catalog update 2026-09-18

CDP quality counters 2 calls and 1 unique payers in 30 days, last call 2026-09-18 (catalog-reported, not verified on chain)

Category (keyword rule) money-movement

Templated path no

x402Version in catalog 2

Service name / tags Usenami · funding, perpetual, trading, multi-venue, market-data

Unpaid probe (census of )

Field

Value

Probe

not probed in this build

Latest re-probe

Field Value

Re-probed at 2026-10-01T03:13:24.000Z (cron)

Verdict now live changed from unprobed

HEAD / GET 405 / 402

accepts[0] {"scheme":"exact","network":"base","amount":"50000","payTo":"0x1538726707212F4dB3EB67cEc0910422A310475c","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","maxTimeoutSeconds":300,"extra":{"name":"USD Coin","version":"2"}}

Live amount equals catalog price yes

Latency 2,557 ms

Error none

On-chain facts for the payTo (public address)

Field Value

Distinct payers 8

Payments 29

USDC volume $0.07

Median payment $0.002

First / last payment 2026-07-13 / 2026-09-29

Sampler-shaped share of payments 100.0%

Payers that are not samplers 0

Source forensics-2026-09-30

Address 0x1538726707212F4dB3EB67cEc0910422A310475c

Declared input and output (extensions.bazaar)

{
 "input": {
  "method": "GET",
  "queryParams": {
   "from": {
    "description": "ISO 8601 window start.",
    "required": true,
    "type": "string"
   },
   "granularity": {
    "description": "Bucket size. Default 1h.",
    "enum": [
     "1h",
     "4h",
     "1d"
    ],
    "required": false,
    "type": "string"
   },
   "include_funding": {
    "description": "Default true. Funding is the only series this route carries, so false is refused before payment.",
    "required": false,
    "type": "boolean"
   },
   "ticker": {
    "description": "Upper-case asset ticker (e.g. BTC, ETH).",
    "required": true,
    "type": "string"
   },
   "to": {
    "description": "ISO 8601 window end.",
    "required": true,
    "type": "string"
   },
   "venue": {
    "description": "Lower-case venue name (e.g. binance, kucoin).",
    "required": true,
    "type": "string"
   }
  },
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "data": [
    {
     "funding_rate": 0.00012,
     "funding_samples": 1,
     "perp_price": 67234.5,
     "ts": "2026-05-01T00:00:00Z"
    }
   ],
   "from_ts": "2026-05-01T00:00:00Z",
   "granularity": "1h",
   "metadata": {
    "completeness_pct": 100,
    "data_sources": [
     "funding_history_hourly"
    ],
    "samples_count": 24
   },
   "ticker": "BTC",
   "to_ts": "2026-05-02T00:00:00Z",
   "venue": "binance"
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X GET 'https://api.usenami.io/v1/backtest/data' -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/b8c8e9912c08/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"b8c8e9912c08"} 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.usenami.io.