api.kadec0.xyz
Base · payout 0x4df66b6c140778fe0717880a7c6dde5ea53acdea
Answers HTTP 402
1 of 1 probed endpoints answered HTTP 402 with a parseable payment payload
checked 2026-10-01
Method: one unpaid request per listed endpoint. A 402 with a payment payload a client could parse counts. Nothing is paid.
x402-style payments, last 7 days (Base)
495 x402-style payments from 14 distinct payers, $18.40 USDC in the last 7 days (Base, exact read)
window ended 2026-10-05
- Payments
- 495
- Outside payers
- 14
- USDC
- 18.4
All USDC received at this payout address: $18.40 (includes payments that are not x402)
Method: counted when the transaction carries a signed USDC authorization (EIP-3009), the settlement x402's exact scheme uses. Some non-x402 gasless sends use it too.
Reading: x402-style payments to this payout address on Base, exact read of the 7 days to 2026-10-05, every block of the window: counted when the transaction carries a signed USDC authorization (EIP-3009), the settlement x402's `exact` scheme uses. Some non-x402 gasless sends use it too; Sato Hub's own payer wallets are left out
Delivery is not measured. We never send a payment, so we never observe what a paid call returns. Unknown means we hold no reading, not that anything failed.
Chains · one payout address, each chain read on its own
| Chain | Payout address | Listings | Answers 402 | x402-style payments |
|---|---|---|---|---|
| Base | 0x4df66b6c140778fe0717880a7c6dde5ea53acdea | 42 | 1 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-10-01 | 495 x402-style payments from 14 distinct payers, $18.40 USDC in the last 7 days (Base, exact read) |
- Hosts
- api.kadec0.xyz
- Listings
- 42 registered in the x402 catalogue
- Price range
- $0.0050 to $0.100 per call, as registered
- Categories (auto)
- Search (12), Other (7), Market data (6), Web data (6), Identity (4), Onchain data (4), Developer tools (1), Media (1), Security (1)
- First seen
- 2026-10-05 · last seen 2026-10-05
Claim this merchant
Sign a message from the payout address 0x4df66b…3acdea to claim this page or download its payment ledger. Claiming proves control of the payout key. It says nothing about the service behind the address, and it does not change how this merchant is ranked. No email, no account: the signature is the whole credential, and signing a message costs no gas and moves nothing.
Registrations · 42
| Endpoint | Chain | Category | Price | Catalogue date |
|---|---|---|---|---|
https://api.kadec0.xyz/v1/usgs-quakes Real-time earthquake feed. Recent seismic events from USGS with magnitude, location, depth, and tsunami flag, filterable by magnitude, time, and radius. | Base | Other | $0.005 | 2026-10-02 |
https://api.kadec0.xyz/v1/weather Weather forecast and air quality for any location worldwide. Returns current conditions plus a 16-day daily weather forecast - temperature highs and lows, precipitation, and wind - alongside air-quality readings includi… | Base | Other | $0.005 | 2026-10-04 |
https://api.kadec0.xyz/v1/cve CVE vulnerability lookup. Returns security vulnerability records by CVE id or keyword from the NIST National Vulnerability Database and GitHub Security Advisories, each with CVSS score, severity, CWE weakness class, aff… | Base | Security | $0.01 | 2026-10-05 |
https://api.kadec0.xyz/v1/gas-oracle Ethereum gas price oracle. Returns the current Ethereum gas price as an EIP-1559 base fee plus priority-fee estimates across five confidence tiers, all in gwei, so an agent can price a transaction before it signs one. E… | Base | Onchain data | $0.01 | 2026-10-04 |
https://api.kadec0.xyz/v1/geocode Geocoding and reverse geocoding. Converts an address or place name to latitude/longitude, or coordinates back to an address. | Base | Other | $0.01 | 2026-10-04 |
https://api.kadec0.xyz/v1/hackernews Hacker News feed. Top, new, and best front-page stories plus full-text story search — titles, scores, comment counts, and author for tech and startup news. | Base | Web data | $0.01 | 2026-10-04 |
https://api.kadec0.xyz/v1/nutrition Food nutrition lookup. Calories, macros, and micronutrients for any food from the USDA FoodData Central database. | Base | Market data | $0.01 | 2026-10-01 |
https://api.kadec0.xyz/v1/stackoverflow Stack Overflow Q&A. Programming question and answer search with scores, accepted-answer flags, tags, and answer bodies via the Stack Exchange API. | Base | Search | $0.01 | 2026-10-03 |
https://api.kadec0.xyz/v1/token-price Crypto token price and market data. Returns the live price of one or many tokens by coin id or ticker symbol, in a chosen vs-currency, with market cap, 24-hour volume, and 24-hour price change. For crypto price lookups,… | Base | Market data | $0.01 | 2026-10-04 |
https://api.kadec0.xyz/v1/trending-coins Trending crypto coins. The coins most searched on CoinGecko right now, with rank, price, and market-cap rank. | Base | Market data | $0.01 | 2026-10-02 |
https://api.kadec0.xyz/v1/author-search Author and researcher profile search. An author name returns matching researchers with current affiliation, publication count, total citations, h-index and i10-index, and their most-cited papers — for author lookup, dis… | Base | Search | $0.02 | 2026-09-27 |
https://api.kadec0.xyz/v1/defi-tvl DeFi TVL for protocols and chains. Returns total value locked per DeFi protocol or per chain via DefiLlama, with category, supported chains, and TVL change over time, filterable by category or chain. For DeFi protocol s… | Base | Onchain data | $0.02 | 2026-09-21 |
https://api.kadec0.xyz/v1/domain-info Domain WHOIS and DNS lookup. Registrar, creation and expiry dates, nameservers, and full DNS records (A, AAAA, MX, NS, TXT, CNAME) for a domain. | Base | Identity | $0.02 | 2026-09-30 |
https://api.kadec0.xyz/v1/fda FDA recalls and adverse events. Drug, device, and food recall and adverse-event records from openFDA with classification, recalling firm, and reason. | Base | Other | $0.02 | 2026-10-02 |
https://api.kadec0.xyz/v1/github GitHub data. Repository stats, user profiles, and code-search results (stars, forks, language, topics, issues) via the GitHub REST API. | Base | Search | $0.02 | 2026-10-03 |
https://api.kadec0.xyz/v1/papers Academic and scientific paper search API. Search research papers and scholarly literature across arXiv, PubMed, OpenAlex, Crossref, and Semantic Scholar in one call, deduplicated into a ranked result set: title, authors… | Base | Search | $0.02 | 2026-10-04 |
https://api.kadec0.xyz/v1/recalls Consumer product recalls. A normalized multi-agency recall feed spanning FDA, CPSC, and NHTSA — product, reason, company, classification, and severity. | Base | Other | $0.02 | 2026-10-02 |
https://api.kadec0.xyz/v1/smart-search Smart, auto-routed research paper search. A broad field term is grounded against the OpenAlex taxonomy and returned as a coherent field cluster; a natural-language question runs hybrid retrieval over OpenAlex and Semant… | Base | Search | $0.02 | 2026-09-27 |
https://api.kadec0.xyz/v1/stablecoins Stablecoin supply data. Returns circulating supply for stablecoins broken down across chains via DefiLlama, filterable by peg type and by collateral mechanism, so you can compare fiat-backed against crypto-backed and al… | Base | Onchain data | $0.02 | 2026-10-02 |
https://api.kadec0.xyz/v1/topic-search Field and topic search for research papers. Give a broad field name or short phrase (like 'crispr' or 'exercise science') and get a coherent, taxonomy-grounded seed cluster: the field is resolved against the OpenAlex to… | Base | Search | $0.02 | 2026-09-17 |
https://api.kadec0.xyz/v1/dns-propagation DNS propagation checker. Compares a DNS record across public resolvers (Google, Cloudflare, Quad9, OpenDNS) to spot propagation lag or split-horizon answers. | Base | Identity | $0.03 | 2026-09-07 |
https://api.kadec0.xyz/v1/email-validate Email validation and email list cleaning. Checks each email address for RFC syntax, a live MX record lookup returning the real mail hosts, disposable-domain detection, role-account flags (info@, sales@, noreply@), and a… | Base | Identity | $0.03 | 2026-10-03 |
https://api.kadec0.xyz/v1/interest-by-region Google Trends interest by region for a keyword. Returns the subregional breakdown of Google Trends search interest inside a country - by state, province, or region - each ranked 0-100 relative to the strongest region. F… | Base | Web data | $0.03 | 2026-10-04 |
https://api.kadec0.xyz/v1/paper-details Citation lookup and reference list for a paper. Given a DOI, arXiv id, OpenAlex id, or PMID, returns its references (the works it cites) and its cited-by list (recent works that cite it), plus full metadata and citation… | Base | Other | $0.03 | 2026-10-01 |
https://api.kadec0.xyz/v1/permits Building permit records. Construction and building permits across Chicago, NYC, Seattle, and San Francisco — type, status, address, cost, and issue date. | Base | Other | $0.03 | 2026-10-04 |
https://api.kadec0.xyz/v1/related-papers Literature review and related-paper discovery. Given a seed paper (arXiv id, DOI, or OpenAlex id) or a topic query, returns semantically similar and recommended scholarly papers to expand a reading list or systematic re… | Base | Search | $0.03 | 2026-10-03 |
https://api.kadec0.xyz/v1/related-queries Google Trends related queries for a keyword. Returns the searches people run alongside a keyword in a given country: top queries scored 0-100 relative to each other, and rising queries with their percentage growth. Goog… | Base | Web data | $0.03 | 2026-10-05 |
https://api.kadec0.xyz/v1/related-topics Google Trends related topics for a keyword. Returns the topics and named entities associated with a keyword in a given country, as top topics scored 0-100 relative to each other and rising topics with percentage growth,… | Base | Web data | $0.03 | 2026-09-15 |
https://api.kadec0.xyz/v1/scrape Scrape any web page to clean markdown. A keyless web scraper that converts a single URL into LLM-ready markdown plus structured metadata (title, headings, links, word count), so an agent can read a page without running … | Base | Web data | $0.03 | 2026-10-05 |
https://api.kadec0.xyz/v1/yield-pools DeFi yield and APY across pools. Returns the top yield-farming pools via DefiLlama with current APY, base and reward APY split, TVL, chain, and project, filterable by chain, project, symbol, stablecoin-only, minimum TVL… | Base | Onchain data | $0.03 | 2026-10-02 |
https://api.kadec0.xyz/v1/paper-fulltext Full text and open-access PDF retrieval for a paper. Given an arXiv id, DOI, OpenAlex id, PMID, or PMCID, returns the readable body split into sections (introduction, methods, results) plus the open-access PDF location:… | Base | Media | $0.04 | 2026-10-01 |
https://api.kadec0.xyz/v1/congress-trades US congressional stock trades. Stock transactions disclosed by members of the House and Senate under the STOCK Act — politician, ticker, amount, and date. | Base | Market data | $0.05 | 2026-09-30 |
https://api.kadec0.xyz/v1/market-sentiment Market fear & greed index. Aggregated investor sentiment from CNN Fear & Greed, the crypto Fear & Greed index, and the VIX volatility gauge. | Base | Market data | $0.05 | 2026-10-05 |
https://api.kadec0.xyz/v1/sec-edgar SEC filings full-text search. Searches SEC EDGAR filings - 10-K, 10-Q, 8-K, and every other form type - by keyword, company name, ticker, or CIK, with date-range filtering, returning company, form type, filing date, acc… | Base | Market data | $0.05 | 2026-10-03 |
https://api.kadec0.xyz/v1/serp Web search results (SERP). Keyless web search returning ranked title, URL, and snippet for a query — with locale/region targeting, freshness filters (past day, week, month, year), pagination, a news mode that adds publi… | Base | Search | $0.05 | 2026-10-05 |
https://api.kadec0.xyz/v1/serp-multi Multi-engine web search (metasearch). One search query fanned out across 2-3 search engines (Brave, Yahoo, Yandex) with results deduplicated by URL and merged by reciprocal-rank fusion: consensus ranking across engines … | Base | Search | $0.05 | 2026-09-15 |
https://api.kadec0.xyz/v1/trend Google Trends interest over time for a keyword. Returns Google Trends search interest as a dated series indexed 0-100: weekly points across the default past 12 months, daily points for 30- and 90-day windows, and window… | Base | Web data | $0.05 | 2026-10-05 |
https://api.kadec0.xyz/v1/whois-bulk Bulk WHOIS lookup. Registrar, dates, and nameservers for up to 10 domains in a single batch call. | Base | Identity | $0.05 | 2026-10-02 |
https://api.kadec0.xyz/v1/lit-review Literature review map in one call. Give a seed paper (DOI, arXiv id, OpenAlex id, or PMID) or a topic query and get one structured result: the seed's references, its cited-by list (most-cited first), and semantically re… | Base | Search | $0.08 | 2026-09-08 |
https://api.kadec0.xyz/v1/serp-read Web search plus page reading in one call: answer with sources. Runs a web search, scrapes the top results, and returns the ranked search results together with each page's content as clean LLM-ready markdown, so an agent… | Base | Search | $0.08 | 2026-10-05 |
https://api.kadec0.xyz/v1/website-audit Instant website SEO audit. On-page SEO, performance, and accessibility snapshot for any URL — title, meta tags, headings, links, image alt, load time, and an issues list with score. | Base | Developer tools | $0.08 | 2026-10-02 |
https://api.kadec0.xyz/v1/serp-batch Bulk web search: up to 5 search queries in a single call, each returning ranked title, URL, and snippet, with the same locale, freshness, and news filters as the single-query web search. One paid call instead of five fo… | Base | Search | $0.1 | 2026-09-30 |
Descriptions are the seller’s own words from the catalogue and are not checked by us. A listed price is a registration, not an observed charge.
Data CC-BY-4.0, attribution: data by satohub.ai. Collector run 2026-10-05. Appearing here is not an endorsement. Check an endpoint with the doctor.