Web Search (SERP)

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Base URLhttps://api.kadec0.xyz/v1

• GET/serp-batch$0.1Bulk 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 for research fan-out.
• GET/lit-review$0.08Literature 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 related work, deduplicated into one uniform table with title, authors, year, venue, DOI, and citation count. Collapses search, citation lookup, and related-paper discovery into a single call. Keyless.
• GET/topic-search$0.02Field 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 topics taxonomy, then the cluster returns the top-cited plus recent-influential works, each with title, authors, year, venue, citation count, and DOI. Solves the broad-term entry problem dense semantic search fails on. Keyless.
• GET/yield-pools$0.03DeFi 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, and minimum APY. For yield discovery and comparing APY across protocols. Keyless.
• GET/gas-oracle$0.01Ethereum 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. Ethereum mainnet only. Keyless, via Blocknative.
• GET/weather$0.005Weather 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 including AQI, PM2.5, PM10, and ozone, for any latitude and longitude. Daily forecast resolution. Keyless, via Open-Meteo.
• GET/dns-propagation$0.03DNS propagation checker. Compares a DNS record across public resolvers (Google, Cloudflare, Quad9, OpenDNS) to spot propagation lag or split-horizon answers.
• GET/paper-details$0.03Citation 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 count — for bibliography building and citation lookup. Keyless via OpenAlex and Semantic Scholar.
• GET/defi-tvl$0.02DeFi 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 screening, chain-level TVL comparison, and tracking where liquidity is moving. Keyless.
• GET/interest-by-region$0.03Google 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. For regional demand mapping, geo targeting, and finding where a keyword over-indexes before spending on it.
• GET/domain-info$0.02Domain WHOIS and DNS lookup. Registrar, creation and expiry dates, nameservers, and full DNS records (A, AAAA, MX, NS, TXT, CNAME) for a domain.
• GET/nutrition$0.01Food nutrition lookup. Calories, macros, and micronutrients for any food from the USDA FoodData Central database.
• GET/scrape$0.03Scrape 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 a browser. A per-call alternative to Firecrawl's scrape endpoint, with no API key and no account. Single page per call, not a site crawler.
• GET/github$0.02GitHub data. Repository stats, user profiles, and code-search results (stars, forks, language, topics, issues) via the GitHub REST API.
• GET/related-topics$0.03Google 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, each carrying its entity type. Google Trends topic discovery for market research and content planning.
• GET/hackernews$0.01Hacker 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.
• GET/related-papers$0.03Literature 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 review, via Semantic Scholar recommendations with an OpenAlex related-works fallback. Keyless.
• GET/smart-search$0.02Smart, 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 Semantic Scholar with reciprocal rank fusion and a SPECTER2 embedding rerank. The response exposes the routing decision, and each paper carries title, authors, year, venue, citation count, DOI, and a relevance score. Keyless.
• GET/website-audit$0.08Instant 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.
• GET/related-queries$0.03Google 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. Google Trends keyword expansion for SEO keyword research, content planning, and spotting breakout search demand early.
• GET/email-validate$0.03Email 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 free-provider flag, rolled into a per-address ok/risky/invalid verdict with reasons. Batch up to 25 email addresses per call. Domain-level DNS only, no SMTP mailbox probe. Keyless.
• GET/congress-trades$0.05US congressional stock trades. Stock transactions disclosed by members of the House and Senate under the STOCK Act — politician, ticker, amount, and date.
• GET/fda$0.02FDA recalls and adverse events. Drug, device, and food recall and adverse-event records from openFDA with classification, recalling firm, and reason.
• GET/whois-bulk$0.05Bulk WHOIS lookup. Registrar, dates, and nameservers for up to 10 domains in a single batch call.
• GET/author-search$0.02Author 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, disambiguation, and citation-metrics. Keyless via OpenAlex.

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