6 APIs · Base network · x402 protocol
Base transaction status in one call: not_found / pending / success / reverted, block, confirmations, from/to, fee in ETH (incl. L1 fee), method selector, and decoded ERC-20 Transfer events with symbols and amounts (canonical tokens flagged). Use to confirm a payment, swap or contract call landed.
$0.001–$0.001One-call Base wallet snapshot: ETH and canonical token balances (native USDC, USDbC, EURC, WETH, cbBTC, cbETH, DAI, USDT), nonce, contract-or-EOA, flags (fresh/unused address, holds bridged USDbC). Use before sending funds, accepting a counterparty, or deciding if a wallet can pay.
$0.002–$0.002Web page to clean Markdown plus metadata: fetch any public URL and return the main content as Markdown (Readability), title, description, canonical, language, author, publish/modified dates, OpenGraph and Twitter card fields, JSON-LD types, headings outline, favicon, feeds, link counts (optional link list), word count. Honours robots.txt; errors (blocked, 4xx/5xx upstream, non-HTML) are not charged.
$0.001–$0.001Company brief bundle: everything in domain-enrich (name, socials, email provider, SPF/DMARC, DNS provider, RDAP age, tech stack, SaaS signals) plus the homepage and About page as clean Markdown, in one call. Unknown domain = 422, not charged.
$0.003–$0.003Company/domain enrichment from public sources for a domain, URL or work email: company name, description, logo, address, social profiles (LinkedIn, X, GitHub...), contact emails/phones from the homepage; email provider from MX (Google Workspace, Microsoft 365...), SPF/DMARC policy; DNS host/provider, SaaS signals from TXT verifications (Stripe, HubSpot, OpenAI...); RDAP registration (registrar, created, age, expiry); website tech stack (CMS, framework, CDN, analytics, chat). Unknown domain = 422, not charged.
$0.002–$0.002Preflight an x402 endpoint before paying: fetches its 402 unpaid, checks the asset is Circle-issued USDC for that network, price sanity, scheme, timeout, and payTo (contract or EOA, USDC balance on Base). Returns ok / caution / block.
$0.005–$0.005zero-payment-guard.worker.beacon.hostVerify a Base mainnet tx paid native Circle USDC to a recipient: amount, has 6 live APIs on PayAPI Market with 0 endpoints in total, in Data, Finance, Verification: Base transaction status in one call: not_found / pending / success / reverted,, One-call Base wallet snapshot: ETH and canonical token balances (native USDC,, Web page to clean Markdown plus metadata: fetch any public URL and return the, Company brief bundle: everything in domain-enrich (name, socials, email, Company/domain enrichment from public sources for a domain, URL or work email:, and 1 more.
6 of 6 have at least one settlement-verified route: PayAPI Market paid for a real call from its own wallet, received real data back and recorded the USDC payment on-chain. Each listing page shows which routes were paid and links the receipt.
Per request, in USDC, over the x402 protocol. An agent calls the endpoint, receives HTTP 402 with the price and wallet, pays and retries. There is no API key, account or subscription. Free to list. PayAPI takes 0% of each job, and Verify a Base mainnet tx paid native Circle USDC to a recipient: amount, is paid directly.