Explore APIs

Orbitwren: Orbital data centers and space AI compute tracker: every orbital data center project (company, hardware, launch, status, sources), launches, orbits, changes and alerts.

URL health check, $0.001 USDC per call: Is a URL up? Live GET from Cloudflare's edge: final HTTP status, every redirect hop with status and latency, total ms, content-type/length, server, TLS, and if it answers 402 the decoded x402 payment terms (version, network, amount, payTo, bazaar). Unreachable host is still a delivered verdict (up:false). No params = runs the example input.

Geocode a place or address, $0.001 USDC per call: Forward geocoding from OpenStreetMap (Nominatim): turn a place name or address into up to 5 matches with lat/lon, full display name, type/class, importance, bounding box, and structured address (road, city, state, postcode, country, country_code). Attribution © OpenStreetMap contributors (ODbL). No match returns 404 (not charged). No params = runs

Currency conversion (ECB), $0.001 USDC per call: Convert an amount between currencies at the latest (or a historical date's) European Central Bank reference rate: amount, from, one or more targets → converted amounts, rate used, inverse rate and rate date. ~30 fiat currencies; no crypto. No params = runs the example input.

EVM gas fees, $0.001 USDC per call: Live EIP-1559 gas for Base, Ethereum, Arbitrum, Optimism, Polygon (or all): next base fee, gas price, slow/standard/fast max fee + priority fee in gwei (median of last 20 blocks' 10/50/90th percentile tips), block utilisation, cost of a native transfer. Read from public RPC nodes at call time. No params = runs the example input.

Fast x402 liveness check. Returns ok, UTC timestamp and request latency marker. Useful for agents testing payment and connectivity.

Options flow intelligence — unusual activity put/call ratios large block trades

How a website treats AI agents, checked now if needed: bot wall, JavaScript, robots rules, llms.txt or feed, and the fetch strategy to use. Charged only when there is an answer.

Cheap paid ping — proves x402 payment works ($0.01 USDC)

Generate a SHA-512 cryptographic hash from UTF-8 text

Use when you need a trustworthy USD price for crypto assets (ETH, BTC, cbBTC, SOL, LINK, AAVE, stablecoins), fiat FX rates (EUR, GBP, JPY…) or metals (XAU, XAG): reads the Chainlink price feed contracts directly from Base or Ethereum in one multicall and returns price, last update time, age in seconds, a stale flag and the feed address so the value is verifiable on-chain. Up to 10 symbols per call

Onchain-Risk EVM & Solana Honeypot & Rug Scanner: Audits token contracts across Base, Ethereum, Arbitrum, and Solana for rug-pull vectors.

AgentDiet Semantic Distillation (/v1/distill) — Strips 85-97% of HTML token bloat

Universal A2A & MCP Tool Discovery, Safe-Proxy & Swarm Router (/v1/x402-broker) — Single-connection meta-router indexing 500+ MCP servers & A2A tools with 85% token compression and Prompt-Guard firewall.

Bounty legitimacy check for a GitHub repo or issue: merge speed, payout signals, trap and pile-up red flags, and a verdict (likely_pays / unproven / avoid). Deterministic, public-data evidence.

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Source-cited ECB foreign-exchange reference conversion with explicit cross-rate math. Underlying ECB statistics are available free; the fee covers validation, calculation, and machine-ready delivery.

Macro-Odds Real-Time Polymarket Prediction Market Stream: Streams live prediction market implied probabilities, volume, and orderbook depth.

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Is this URL up? HTTP status, full redirect chain, final URL, response time, content type, server/CDN and a security-headers grade (HSTS, CSP, X-Frame-Options...).

Preflight any address on Base or Arc before paying or approving it: EOA vs contract vs EIP-7702-delegated wallet, EIP-1967 proxy implementation/admin, owner(), Safe multisig threshold, ERC-20 metadata, USDC + native balance, Sourcify verification, and risk flags.

Static compatibility comparison of baseline and candidate OPC UA NodeSet2 XML revisions. Not runtime interoperability or safety certification.

Marketing copy quality gate and pre-publish copy review for autonomous agents about to publish or send ad, landing-page, email, CTA, campaign or GTM copy. Returns a fast PASS/WARN/BLOCK verdict, claim-risk flags and prioritized fixes before release. Standard machine terms: https://nexuseval.vercel.app/terms.json 2026-08-29-v2.

Readable text from a public webpage

Structured-data extraction for a target URL.

Compress images to reduce file size with configurable quality. A photo compressed to quality 30 is typically 90-95% smaller with acceptable visual quality. Useful for reducing storage costs, optimizing web page load times, preparing image uploads, and bandwidth reduction for mobile users. Accepts PNG, JPEG, WebP, AVIF. Returns JPEG.

Namewhere: Company name to official website domain, with confidence and evidence.

Namewhere: Company name to official website domain, with confidence and evidence.