Explore APIs

Scan up to 50 open-source packages (ecosystem, name, version) against OSV.dev: advisory ids, summary, severity, CVSS, fixed versions, CVE aliases with CISA KEV and EPSS joined, and a suggested minimum safe version.

Signatures, press sheets and blank pages needed for a book of N pages at 4, 8, 16 or 32 pages per signature.

Sheet-metal bend allowance, outside setback, bend deduction and flat length from angle, radius, thickness and K-factor.

Exact age from a birth date: years, months, days, total days, weeks and hours, birth weekday and days to the next birthday.

Wax and fragrance oil weights for container candles from jar size, fill level, wax density and fragrance load.

BunnVault: Real-time Aave v3 USDC APY feed on Base Mainnet

Text Moderation language: Language identification (ISO 639-1 code, name, confidence) for one text or a batch of up to 50, with a script-based fallback.

Aquarium volume in US gallons and litres from inside dimensions, usable water after substrate, and the water's weight.

Correct likely spelling errors in an SEO query

Latest NDBC buoy observation: wind, gust, waves, swell, pressure and water temperature, with a Beaufort and sea-state screen.

Air changes per hour (ACH) from airflow and room volume, or the CFM needed for a target ACH.

Lint a GitHub Actions workflow: actions not pinned to a commit SHA, missing or write-all permissions, pull_request_target with PR head checkout, script injection via event fields in run, secrets on the command line, curl|bash, self-hosted runners, deprecated set-output.

OyaPicks: recently resolved prediction markets and their winning outcome

Recent earthquakes worldwide above a magnitude, newest or largest first, optional bounding box, with a match count.

About page discovery repair plan fetches current public evidence from the supplied target and evaluates the documented criterion. It returns the observation, threshold, verdict, exact evidence source, limitations and a mode-specific action. The check is passive: no login attempt, payload injection, exploit, purchase, form submission or load test is performed.

Caffeine remaining after hours, and the time until it drops below a threshold, from a half-life you can set (default 5 hours).

Pay a tiny amount of USDC and receive one delightfully useless fact.

OSM-Objektkennung node/123, way/123 oder relation/123: Steckertypen, Akku-Schließfach, Kapazität, Öffnungszeiten, Gebühren, Betreiber, Zugang, Roh-Tags, Änderungsdatum und Quellenstand. Nicht erfasste Angaben bleiben null. Keine Live-Verfügbarkeit.

x402 settlement test

ETH/USD spot via AgentKit x402 — $0.001 USDC

Retrieve deterministic evidence from a public HTTPS page

Locus public pay-per-use API

Flip a coin for a small USDC payment on Base mainnet. Returns heads or tails.

Split EVM calldata into its 4-byte selector and 32-byte words, naming common ERC-20/721 calls and spotting addresses.

0.001 USDC on base

Returns MetaLend API services directory with a one-line summary of each RebalancerResource endpoint plus links to API docs.

Ask the oracle: will I make it?

RE2 regex (no ReDoS). Named groups as JSON. Match count capped.

Bayes' theorem: posterior probability from a prior, sensitivity and false-positive rate, with natural frequencies and odds form.

Fare Pulse — cheapest live fares from a major US hub, cached snapshot.