x402 APIs that appeared in the CDP Bazaar in the last days, newest first, optionally only those already paid by some buyers.

The x402 APIs with the most distinct payers (or calls) in the last 30 days, optionally within a category, with price and measured uptime.

x402 APIs that were up before but failed our latest check, most paid first.

Company lookup in SE (Sweden), NO (Norway), FI (Finland), GB (United Kingdom) by registry number: official name, legal form, active/dissolved status, bankruptcy or liquidation, registration date, address and industry codes. Official registry data (Bolagsverket, Brønnøysund, PRH, Companies House).

Read up to 5 public web pages in one call. Per URL: status, final URL, title, main content as Markdown, truncated flag, byte/char counts and an error code. Charged only if a page is read. $0.015 USDC per call on Base.

Verify a USDC payment on Base: tx succeeded, USDC sent to the expected recipient (and from the expected sender), at least min_amount, enough confirmations. Returns verdict + decoded transfers. Unknown tx = not charged.

x402 APIs ranked by the uptime we measure every 6 hours over 30 days, then by payers and latency, optionally only well-paid ones.

Geocode one US street address with the U.S. Census Bureau: standardised address, lat/lon, state, county, census tract, block group, ZCTA, metro area, congressional district (official GEOIDs). No match = not charged.

Totals of the x402 market in the CDP Bazaar: listings, origins, listings with 5 or more payers, calls in 30 days, listings per network, the price distribution, and how many monitored endpoints are up now.

Verify an attestation token issued by evaluate_deliverable: recovers the EIP-712 signer, checks it is our evaluator, returns verdict, score, jobId and the bytes32 reason.

Domain trust score in one call: combines RDAP domain age and registry status, DNS, MX, SPF, DMARC, DKIM and an HTTPS reachability probe into a deterministic 0-100 score, a verdict (low_risk, review, high_risk) and the reason codes behind it. For vetting a vendor, sender, signup or link before an agent acts. Uncharged if a data source is down. $0.01 USDC per call on Base.

Shrink JSON for transport: send valid JSON text and get the smallest equivalent form with whitespace removed and data unchanged. Use it to cut tokens or payload size. $0.001 USDC per call on Base.

Get a page's preview data: send a public URL and get title, meta description, canonical URL, final URL and status. Use it for link previews, SEO checks or quick page triage. $0.003 USDC per call on Base.

One payment and one request replaces four website checks: DNS, HTTP/redirects, robots.txt, and page metadata, returning one evidence-backed health report. $0.009 USDC per call on Base.

Format JSON for humans: send valid JSON text and get it back with stable two-space indentation. Use it before showing JSON in logs, diffs or chat. $0.001 USDC per call on Base.

Fix broken JSON from an LLM or scraper: send the malformed text (single quotes, trailing commas, unquoted keys, code fences) and get back parsed, valid JSON plus a repaired flag. Use it before JSON.parse fails in an agent pipeline. $0.005 USDC per call on Base.

Read one web page as clean text: send a public URL and get the main text with title, final URL and fetch metadata. For several URLs at once use web-read-batch. $0.005 USDC per call on Base.

Domain age and registration lookup from public RDAP: registration, expiry and last-changed dates, age in days, registrar, registry status flags and nameservers for a domain. Use it to spot newly registered or expiring domains before trusting a link, sender or vendor. Uncharged when the registry cannot be reached. $0.003 USDC per call on Base.

Heuristic risk flags for a Base contract from free public data: Sourcify verification, upgradeable proxy + admin, owner type, mint/pause/blacklist/fee selectors, bytecode size. Not an audit or financial advice.

Email authentication check for a sending domain over DNS: MX, SPF (policy and lookup count), DMARC (policy, pct, reporting) and DKIM keys on common selectors. Returns pass/weak/missing per check, findings with fix hints, and a 0-100 email-auth score. Reads public DNS only; no mail is sent. $0.003 USDC per call on Base.