the402 x402 endpoint directory

cross-list: research topic in JSON body

brief: research topic in JSON body

Semantic similarity ranking — send a query plus up to 100 candidate texts, get the candidates back ranked by semantic

Find local businesses and places by category and location: pharmacies, restaurants, hotels, plumbers, lawyers, gyms an

Detect the technologies a website runs: CMS (WordPress, Shopify, Webflow...), JS framework (Next.js, React, Vue, Angul

The archived history of any website from the Internet Archive Wayback Machine: first-seen date, last-seen date, total

Compare one fact across all 82 countries in a single JSON call — e.g. VAT rates, minimum wages, public holidays or dig

Top 100 AI researchers ranked by AI publication volume in the trailing 365 days, enriched with h-index, i10-index, tot

Cross-venue funding arbitrage signal from real-time 8h-equivalent funding rates on Binance, OKX, Bybit, KuCoin, Bitget

Stratalize — attested finance, legal, healthcare, and compliance intelligence. Signed, independently verifiable receip

Stratalize — attested finance, legal, healthcare, and compliance intelligence. Signed, independently verifiable receip

Search newest U.S. Federal Register document metadata by topic, agency, type, and publication date, returning bounded

Search public USAspending prime federal procurement awards by recipient company or organization name, UEI, or legacy D

Compare a business or organization name with separately named Entity records and aliases in the official OFAC SDN and

Normalize caller-supplied inline Schema.org JSON-LD into deterministic Organization, Product, Service, Article, and Ev

Retrieve normalized, recent issuer-reported revenue, earnings, balance-sheet, cash-flow, and diluted-EPS facts from of

Look up DNS records for any domain — A, AAAA, MX, NS, TXT, CNAME, SOA. Use for domain diagnostics, mail server lookup,

AI-package release velocity. Per-package releases_24h / releases_7d / releases_30d, latest bump classification (major/

AI-relevant APIs from the APIs.guru directory of 2400+ OpenAPI specs, filtered via curated keyword matching. Per-entry

Top 50 multi-word keyphrases across recent arXiv AI abstracts ranked by recent-vs-baseline lift (last 30 days frequenc

$0.02/contract. Agents strike binding-by-goodwill agreements: create terms, add parties, sign, check signatures — with

$0.02/render. Render any public web page to PDF — headless Chromium, SSRF-guarded egress. 155 tools, one balance — rel

Best Arbitrum USDC venue for a given amount/risk, with optional deposit calldata

Calibrated 1X2 probabilities plus derived markets (totals, BTTS, correct score) for every upcoming fixture across the

NFL player usage and opportunity metrics for fantasy football: target share, air yards share, WOPR, Next Gen Stats (se

Agent-readiness scan of any public website: scores 0-100 on MCP server, /.well-known/agent.json, llms.txt, OpenAPI val

Top Nostr notes and authors by sat-zap velocity over a rolling window. Surfaces real-money sentiment — who the BTC/Nos

Kronos by ForgeMesh current crypto risk state, per-symbol signal streaks, and active cooldown timers. Use as a low-cos

Raw cross-asset macro reference numbers from FRED: 10y-2y yield curve, broad USD index, S&P 500, VIX, M2 money supply

Paid ($0.02 USDC via x402). Returns up to 50 active opportunity cards in a category, each as a teaser ({ id, slug, tit

Webbie page generator: site name, headline, tagline, hero images, content sections, nav, colors — returns a finished r

Fetch current US AQI, European AQI, particulate, carbon monoxide, nitrogen dioxide, and ozone values for a geocoded lo

Translate supplied text through MyMemory with source-language autodetection or an explicit language code.

Fetch public IP network, ASN, organization, location, and timezone context. This does not claim an abuse or threat sco

Resolve current DNS records and fetch public RDAP registration metadata for a domain.

Fetch a public RSS or Atom feed with private-network blocking and return bounded current entries.

Fetch current top-story metadata and discussion links from the official Hacker News Firebase API.

Fetch the latest weekly US national mortgage-rate observations from FRED. This is not a personalized lender quote.

Fetch current top Hacker News story titles as a lightweight technology trend pulse.

Fetch current reference foreign-exchange rates for a base currency, optionally filtered to target currencies.

One call returns the full domain profile for vetting, deliverability, or phishing/fraud checks: live DNS (A/MX/NS + re

Base wallet portfolio breakdown: up to 100 token positions with live USD price and value, portfolio percentage, 24h pr

Multi-source web research and company/topic intelligence: runs a live web search, visits the top sources, and returns

Repair Arabic text extracted from PDFs and OCR. Many PDFs encode Arabic as Unicode Presentation Forms: it renders iden

Preflight a Base USDC payment before an AI agent signs it. Check live funding and gas, confirm Base chain intent, clas

Symbol-level diff between two versions of a PyPI or npm package: added/removed symbols, signature changes, new depreca

Validates an IBAN: country prefix, length, segment-by-segment structure and the ISO 7064 MOD 97-10 check digits, recom

One property in, everything we know out: pass ?address= or ?apn= (parcel id; plus optional city/state) and get every m

Get current delay information for a specific airport

Send SMS notification for payment alerts.