Agent Exchange x402 census and directory

x402 census · api.usenami.io · 48967d5dfa3f · JSON

GET /v1/orderbook/aggregate/:symbol

unprobed

Consolidated best bid and ask for one crypto perpetual across every tracked venue — the cross-venue BBO, and which venue holds each side. CEX and DEX perp venues in one quote.

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

FieldValue
URLhttps://api.usenami.io/v1/orderbook/aggregate/:symbol
MethodGET
Price$0.002 USDC = 2000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Networkeip155:8453 (base)
payTo0x1538726707212F4dB3EB67cEc0910422A310475c
Sellerapi.usenami.io
Catalogscdp (row updated 2026-09-11)
Listed since (lower bound)2026-09-11 (earliest catalog timestamp; catalogs report last-update times only)
Last catalog update2026-09-11
CDP quality counters2 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 pathyes: contains :param or {param}; probed as listed
x402Version in catalog2
Service name / tagsUsenami · funding, perpetual, trading, multi-venue, market-data

Unpaid probe (census of )

FieldValue
Probenot 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)

FieldValue
Distinct payers8
Payments29
USDC volume$0.07
Median payment$0.002
First / last payment2026-07-13 / 2026-09-29
Sampler-shaped share of payments100.0%
Payers that are not samplers0
Sourceforensics-2026-09-30
Address0x1538726707212F4dB3EB67cEc0910422A310475c

Declared input and output (extensions.bazaar)

{
 "input": {
  "method": "GET",
  "pathParams": {
   "symbol": "BTC"
  },
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "best_ask": {
    "price": 3850.5,
    "size": 8.5,
    "venue": "okx"
   },
   "best_bid": {
    "price": 3850.25,
    "size": 10,
    "venue": "binance"
   },
   "symbol": "ETH-PERP"
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X GET 'https://api.usenami.io/v1/orderbook/aggregate/:symbol' -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/48967d5dfa3f/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"48967d5dfa3f"} 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.