api.kadec0.xyz tools

Food nutrition lookup. Calories, macros, and micronutrients for any food from the USDA FoodData Central database.

Stack Overflow Q&A. Programming question and answer search with scores, accepted-answer flags, tags, and answer bodies via the Stack Exchange API.

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, disambiguation, and citation-metrics. Keyless via OpenAlex.

Fetch any public URL and return the file as base64. Downloads an image, PDF, or other file and returns the base64-encoded bytes, a ready-to-use data URI, the content type, and the size, so an agent can pass a remote file to a vision model or embed it inline without handling binary itself. Follows redirects, 5MB cap, public addresses only. Keyless.

US congressional stock trades. Stock transactions disclosed by members of the House and Senate under the STOCK Act — politician, ticker, amount, and date.

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, affected products, and references, filterable by severity and source. For vulnerability triage and dependency risk checks. Keyless.

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 screening, chain-level TVL comparison, and tracking where liquidity is moving. Keyless.

DNS propagation checker. Compares a DNS record across public resolvers (Google, Cloudflare, Quad9, OpenDNS) to spot propagation lag or split-horizon answers.

Domain age checker. Returns when a domain was registered, its age in days and years, expiry and last-updated dates, and the registrar, read from the authoritative registry over RDAP with a WHOIS fallback, plus a newly-registered flag and a high, medium, or low risk indicator. For phishing and fraud screening, lead qualification, and trust scoring. Keyless.

Domain WHOIS and DNS lookup. Registrar, creation and expiry dates, nameservers, and full DNS records (A, AAAA, MX, NS, TXT, CNAME) for a domain.

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 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.

Company domain enrichment. Firmographics, tech-stack detection, social profiles, and metadata for a company domain — a keyless one-call enrichment gateway.

Currency exchange rate between two currencies. Returns the latest official reference rate for a currency pair, the inverse rate, and the rate date, across about 160 active ISO 4217 currencies drawn from the ECB and other central banks. For currency conversion, pricing, invoicing and accounting. Daily reference rates, not live trading quotes. Keyless.

FDA recalls and adverse events. Drug, device, and food recall and adverse-event records from openFDA with classification, recalling firm, and reason.

Crypto Fear & Greed Index: today's crypto market sentiment score from 0 (extreme fear) to 100 (extreme greed) with its classification, plus up to 30 days of daily history, the window average, and the trend direction. A compact sentiment signal for trading agents, bitcoin and crypto market dashboards, and risk-on or risk-off checks. Data from alternative.me, attributed. Keyless.

Historical exchange rates for a currency pair. Returns the daily official reference-rate series between two dates (default the last 30 days, up to 1 year), with the period average, minimum, maximum, and percent change. For FX trend analysis, backdated currency conversion, and finance reporting. Business days only, from the ECB and other central banks. Keyless.

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. Ethereum mainnet only. Keyless, via Blocknative.

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. For regional demand mapping, geo targeting, and finding where a keyword over-indexes before spending on it.

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 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.

Market fear & greed index. Aggregated investor sentiment from CNN Fear & Greed, the crypto Fear & Greed index, and the VIX volatility gauge.

MX record lookup and email provider detection for a domain. Returns the MX records by priority, the hosted mail provider behind them (Google Workspace, Microsoft 365, Zoho, Proton, Fastmail, Mimecast, Proofpoint and more), SPF and DMARC records with the DMARC policy, plus A, AAAA, NS, TXT and SOA records. For email deliverability checks, lead enrichment and domain due diligence. Keyless.

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 count — for bibliography building and citation lookup. Keyless via OpenAlex and Semantic Scholar.

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: arXiv via ar5iv, biomedical via Europe PMC, OA locations via OpenAlex for the rest. The 'now read it' call after a paper search. Keyless.