402402Signal

Endpoint readiness

ai-data-marketplace-1042299154756.us-central1.run.app

How this seller looks from the buyer's side: what it lists, and what 402Signal observed when buyers asked.

78listings in the catalog (78 active)
0public probes in 30 days
n/aanswered with a live 402 challenge
n/amedian time to the challenge (p95 n/a)

Networks declared across listings: Base (78). First listed 13 d ago; last seen in a feed 1 h ago. 78 of 78 listings carry an input schema.

Public observations, 30 days

No public probes in the last 30 days. Numbers appear here once buyers' checks reach this host; nothing is inferred from the catalog alone.

Observed changes in 30 days, where a live challenge differed from 402Signal's previous trusted observation of the same URL: price 0, recipient 0. Listed changes in the same window, where a discovery feed's claim for a URL changed (a catalog claim, not an observation): price 0, recipient 0.

Listings

The 25 most recently seen of 78.

PathNameCapabilitySchemaReadiness
/api/v1/weather_forecastWeather Forecast APItravel.weatheryesCheck
/api/v1/stock_quotesLive Market Quote Snapshotmarket.priceyesCheck
/api/v1/crypto_market_snapshotLive Crypto Market Snapshotmarket.priceyesCheck
/api/v1/evm_block_numberLive EVM Block Numberchain.balanceyesCheck
/api/v1/evm_callRead-Only EVM Contract CallunknownyesCheck
/api/v1/url_metadataURL Metadata ExtractorunknownyesCheck
/api/v1/stock_research_briefPublic Company Research Briefmarket.priceyesCheck
/api/v1/ssl_certificateSSL Certificate ValidatorunknownyesCheck
/api/v1/leadsDopamineDesk AI MarketplaceunknownyesCheck
/api/v1/gas_oracleLive EVM Gas Pricemarket.priceyesCheck
/api/v1/contractsFederal Contract Awardssearch.webyesCheck
/api/v1/ai_model_pricingCommunity AI Model Pricing Indexcompute.inferenceyesCheck
/api/v1/evm_blockEVM Block by Height or Hashchain.balanceyesCheck
/api/v1/website_due_diligenceDopamineDesk AI Marketplacesearch.webyesCheck
/api/v1/transaction_preflightAgent Transaction Preflightchain.balanceyesCheck
/api/v1/wallet_portfolioDopamineDesk AI MarketplaceunknownyesCheck
/api/v1/fx_ratesCurrent FX Reference RatesunknownyesCheck
/api/v1/company_intelligenceLive Company Intelligence Reportidentity.authyesCheck
/api/v1/vendor_risk_reportDopamineDesk AI MarketplaceunknownyesCheck
/api/v1/x402_market_opportunity_reportDopamineDesk AI MarketplaceunknownyesCheck
/api/v1/lobbying_reportsSenate Lobbying Filing Searchsearch.webyesCheck
/api/v1/erc20_balanceLive ERC-20 Token Balancechain.balanceyesCheck
/api/v1/agent_readiness_auditDopamineDesk AI Marketplacestorage.filesyesCheck
/api/v1/shopify_store_lookupDopamineDesk AI Marketplacesearch.webyesCheck
/api/v1/create_agent_tokenDopamineDesk AI Marketplaceidentity.authyesCheck

Badge

Sellers may embed the live badge; it reads the same public numbers and never changes with payment.

![402Signal readiness](https://402signal.com/endpoints/ai-data-marketplace-1042299154756.us-central1.run.app/badge.svg)

402Signal readiness badge for ai-data-marketplace-1042299154756.us-central1.run.app

Method and neutrality

Listings come from the public discovery feeds (CDP, PayAI, GoPlausible). Observations are unpaid GET probes 402Signal made on behalf of buyers in the last 30 days, from Ashburn, with redirects refused; live means the seller answered with a valid x402 challenge. Lab and sponsored traffic is excluded. Nothing a seller pays for changes these numbers. A price change or recipient change is observed when the amount or payTo in a live challenge differs from 402Signal's previous trusted observation of the same URL within the 30-day window; a listed change is a discovery feed's claim for a URL changing, counted separately and never as an observation. Method · Check a listing yourself, unpaid

Operate this host? Claim this page to be named as a reference seller and to receive the monthly numbers for your host by email. Public data stays the same either way.