Explore APIs

Parse/validate/format phone to E.164 via libphonenumber offline. No owner/carrier lookup.

ENS (.eth) + Basename (.base.eth) forward/reverse resolution on Base/Ethereum public RPC. Avatar optional. Amp port.

Brand-safety / moderation scores per category + offending spans + threshold pass/fail + model version. NOT a legal judgment. OpenRouter free-first (Detoxify too heavy for serverless).

MAC/OUI vendor lookup via api.macvendors.com (keyless). Input MAC or OUI → vendor + normalized OUI.

JSON Pointer get, RFC 6902 patch, RFC 7396 merge-patch, structural diff, path list. Offline.

iTunes Search API (keyless). term (+ media/entity/limit/country) → trimmed track/collection/artist results.

Offline IBAN MOD-97 (ISO 13616) + BIC/SWIFT format check. No SWIFT directory scrape.

GitHub repo metadata (keyless, User-Agent required). owner/repo → stars/forks/language/license. Soft-fail 403 rate.

ECB FX spot via Frankfurter (keyless). Pair or base→quotes. Data only — not advice.

openFDA drug label search (keyless). search (+ limit) → trimmed labels (openfda brand/generic, indications, warnings subset).

ERC-20 name/symbol/decimals/totalSupply (+ optional balanceOf) via multicall3 on Base or Ethereum. 400 if not a contract. Amp port.

Epoch s/ms/us/ns or ISO-8601 ↔ epoch_s/ms + ISO UTC + any IANA tz. Offline. Amp port.

Email deliverability (MX/SPF/DMARC via DoH). No SMTP mailbox probe. No charge on empty/failed.

Echo JSON body and return sha256 of sorted serialization.

USGS earthquake GeoJSON feed (keyless). Window day|week|month (significant preferred) → quake list.

DNS via Cloudflare/Google DoH: A/AAAA/MX/TXT/NS/CAA + optional SPF/DMARC parse. No mailbox probing.

Relative date parse, ISO 8601 duration math, IANA timezone convert with DST flags. Offline tzdata.

Word suggestions via Datamuse (keyless). ml/sp/rel_* (+ max) → trimmed word list.

Next 1-20 run times for a 5-field cron expression (IANA tz, DST-aware). Offline. Amp port.

Latest eth_blockNumber for Base and/or Ethereum; optional tip timestamp. ~2s cache. Amp port.

arXiv paper metadata via export.arxiv.org Atom API (keyless). Id or search query → title/authors/abstract/pdf.

Wallet balances in one call on 9 chains: native + USDC, USDT, DAI, EURC, bridged USDC, WETH, WBTC/cbBTC on Base, Ethereum, Arbitrum, Optimism, Polygon, Avalanche, BNB Chain; SOL + USDC/USDT on Solana; TRX + USDT on Tron. Pass 0x, Solana and/or Tron addresses, plus up to 10 custom tokens. Live reads, block numbers, stablecoin total. 0.002 USDC.

Fact verification — returns verdict, confidence, current truth

US overnight interest rates — latest SOFR and effective federal funds rate (EFFR), transaction volumes and policy target bounds. Compare secured and unsecured dollar funding costs and track monetary policy. x402Atlas is not affiliated with the New York Fed. The New York Fed does not sanction, endorse, or recommend any products or services offered by x402Atlas.

Is this x402 seller actually paid, compared with every other one? One row out of our weekly read of every seller on Base, where all of them get the SAME window, so the number means the same thing seller to seller. Give a payTo address: verdict (paid, single-payer, self-funded, dust-only, silent), payers, how many the seller itself funded, USDC in. Call counts are not payments; of 1 397 sellers rea

CipherOwl ExpressScan Basic: direct-address risk check. One address per request. Seven-day same-address rechecks. Website: https://x402.cipherowl.ai. Response example is illustrative, not a live result or valid payment receipt.

Read paid Subnano research and analysis as JSON with Markdown content.

Turn invoice JSON into a print-ready PDF. Input (JSON body): seller, buyer, invoice_number, issue_date, line_items[{description,quantity,unit_price}], optional due_date, currency, tax_rate, discount, notes, payment_instructions. Returns application/pdf bytes, multi-page if needed. Totals, tax and discount are computed server-side; the X-Invoice-Total header carries the total. 12 currencies. $0.02

Generate ready-to-use 1200x630 Open Graph / social preview images from text for content, marketing, and publishing agents. Provide a title plus optional subtitle and category badge, pick a built-in theme (dark, light, midnight, forest, sunset), and receive a base64 PNG sized exactly for og:image and twitter:card. Pure server-side rendering with no external calls and no shell access.

x402 OB Image Generator · Price $0.01 per generated image https://obagents.vercel.app/api/obigen/protected/igen GET Query Params // The primary text description of the image to generate. prompt: string; Example: https://obagents.vercel.app/api/obigen/protected/igen?prompt=yourprompt · x402 OB Image Gener