x402 census · api.usenami.io · 90019e74a7eb · JSON

GET /v1/perp/funding-flips

unprobed

Funding-rate sign-change detection for one crypto perpetual — every positive↔negative flip across venues inside a lookback window, each with its venue, hour and the rates either side of the change. Raw events for spotting funding-regime turns in funding-arb and carry positioning: it reports the flips, it does not classify them as sustained or transient.

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.usenami.io/v1/perp/funding-flips

Method GET

Price $0.003 USDC = 3000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Network eip155:8453 (base)

payTo 0x1538726707212F4dB3EB67cEc0910422A310475c

Seller api.usenami.io

Catalogs cdp (row updated 2026-09-11)

Listed since (lower bound) 2026-09-11 (earliest catalog timestamp; catalogs report last-update times only)

Last catalog update 2026-09-11

CDP quality counters 2 calls and 2 unique payers in 30 days, last call 2026-09-11 (catalog-reported, not verified on chain)

Category (keyword rule) crypto-data

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

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 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": {
   "hours": {
    "description": "Lookback hours. Default 24, max 168.",
    "required": false,
    "type": "integer"
   },
   "ticker": {
    "description": "Base ticker (e.g. BTC, ETH). Required.",
    "required": true,
    "type": "string"
   }
  },
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "flips": [
    {
     "direction": "positive_to_negative",
     "hour": "2026-05-31T08:00:00Z",
     "rate_after": -0.00005,
     "rate_before": 0.0001,
     "venue": "binance"
    }
   ],
   "flips_count": 2,
   "hours": 24,
   "ticker": "BTC",
   "venues_with_flips": 2
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X GET 'https://api.usenami.io/v1/perp/funding-flips' -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/90019e74a7eb/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"90019e74a7eb"} 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.