x402 census · x402.ottoai.services · 683043dfa1fe · JSON

GET /yield-markets

live

DeFi yield farming markets with live APYs across Aave V3 and Morpho on Base, Ethereum, and other major chains. Find the best stablecoin yield (USDC) and ETH yield for idle capital: returns supply APY, TVL, and vault/market addresses per token, filterable by protocol, chain, or token symbol. Compare DeFi yield rates across lending markets and vaults before depositing.

Verdict: live. The unpaid GET reached a valid 402. The live amount equals the catalog price.

Facts from the catalogs

Field Value

URL https://x402.ottoai.services/yield-markets

Method GET

Price $0.001 USDC = 1000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Network eip155:8453 (base)

payTo 0x5bB4B0C766E0D5D791d9403Fc275c22064709F68

Seller x402.ottoai.services

Catalogs cdp (row updated 2026-09-28)

Listed since (lower bound) 2026-09-28 (earliest catalog timestamp; catalogs report last-update times only)

Last catalog update 2026-09-28

CDP quality counters 193 calls and 65 unique payers in 30 days, last call 2026-09-28 (catalog-reported, not verified on chain)

Category (keyword rule) crypto-data

Templated path no

x402Version in catalog 2

Service name / tags Otto AI · yield farming, stablecoin yield, defi yield, aave, morpho

Unpaid probe (census of 2026-09-30)

Field Value

Probed at 2026-09-30T23:12:25.336Z

HEAD 402

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":"1000","payTo":"0x5bB4B0C766E0D5D791d9403Fc275c22064709F68","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 / railway-hikari / *

Latency 5,287 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 36

Payments 218

USDC volume $0.22

Median payment $0.001

First / last payment 2026-05-05 / 2026-09-29

Sampler-shaped share of payments 94.0%

Payers that are not samplers 1

Source forensics-2026-09-30

Address 0x5bB4B0C766E0D5D791d9403Fc275c22064709F68 (contract: SemiModularAccountBytecode)

Declared input and output (extensions.bazaar)

{
 "input": {
  "method": "GET",
  "queryParams": {},
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "markets": [
    {
     "apy": 4.5,
     "asset": "USDC",
     "protocol": "Aave V3"
    }
   ],
   "status": "success"
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X GET 'https://x402.ottoai.services/yield-markets' -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/683043dfa1fe/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"683043dfa1fe"} 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 x402.ottoai.services.