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Median spot price of up to 50 coins across Binance, Coinbase, Kraken, OKX and Bybit in usd/usdt/eur/btc, with per-venue prices, 24h change %, summed 24h USD volume and cross-venue spread %. ids accepts CoinGecko ids or tickers.

Most traded open prediction markets right now across Polymarket and Kalshi, ranked by 24h volume, with implied probabilities and links.

Checkup for x402 buyer clients. Pay once and get a field-by-field diagnosis of the payment your client signed (amount, recipient, validity window, clock offset, nonce, EIP-712 signature) and of the request that arrived, plus the facilitator's verify and settle results. Base mainnet payments get the full diagnosis; Base Sepolia payments get a preview with the status of each check only.

Fetch Google Play Store top grossing games.

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.

ARBITER deterministic semantic control-flow and arbitration: measure and rank a fixed candidate field against current state, intent, or perspective.

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

Pay $0.01 USDC to make an outbound HTTP request through the proxy. Supports all standard HTTP methods, custom headers (including auth), and JSON or raw bodies. Responses are returned as text or base64-encoded binary. Max response size 10 MB, timeout 30s. Each request performs one upstream fetch and returns the final URL plus response metadata.

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.

Read one public URL and return clean bounded page content with a SHA-256 content hash.

Watch one public page for 7 days. Checks hourly. When the content hash changes, POST {watch_id,url,old_fingerprint,new_fingerprint,changed_at} to your https callback (5s timeout, one retry). POST JSON {"url":"https://example.com","callback_url":"https://example.com/hook"}. Returns {watch_id,url,expires,status_url}. Free status is GET /v1/watch/:id and does not show the callback. At 500 active watc

Fetch current Amazon deals.

Correct likely spelling errors in an SEO query

Fetches kind 3 contact lists over up to twelve relays. Because kind 3 is replaceable, several relays regularly hold different versions; only the one with the highest created_at is used and the answer states which relays carried that version and how many older versions were seen, so a stale relay never quietly overwrites a current list. At depth 1 the answer is the account and its outgoing follows.

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.

SDK capabilities query ($0.01/request direct, or $0.003/request via Session Ticket at /v1/billing/tickets)

Return both the fully-expanded (eight 4-hex groups) and canonical compressed (RFC 5952) forms of an address. IPv4 is returned unchanged in both fields.

Get live EVM gas pricing with EIP-1559 breakdown and USD cost estimates

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.

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

Find the best x402 endpoints for a task. Returns sellers ranked by proven demand (30-day unique payers, repeat calls per payer, scanner traffic filtered), price, and the cheapest proven alternative.

Deterministic citation formatter — APA 7, MLA 9, Chicago 17 author-date, BibTeX. From structured fields, returns the reference entry (markdown/html/plain) + the in-text citation, reproducing published style-manual examples exactly. For full author lists use POST. Every answer signed. Free sample, no payment required: GET /play/cite

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

Japanese postal-code lookup and reverse lookup. Keywords: Japanese postal lookup, Japan Post postal code, postal code reverse lookup, 日本郵便番号検索. Use a postal code or prefecture/city/ward/town components against the local Japan Post snapshot. / 通过邮编或都道府县、市区町村、区、町名字段，在本地 Japan Post 数据中进行日本邮编反查。

ETH/USD spot via AgentKit x402 — $0.001 USDC

Japanese address normalization (住所正規化): standardize a JP address into clean prefecture / city / town / chome-banchi components. Fixes fullwidth/halfwidth digits, old-form kanji, and chome-banchi notation variants, and resolves the 7-digit postal code. Returns a 0-1 confidence score so agents can flag low-quality input. Use for address validation, cleansing, deduplication, and canonicalization befo

Decision Leg invalidations. Per-call USDC.

Retrieve deterministic evidence from a public HTTPS page

Check an exact npm or PyPI package version immediately before installation using current registry, vulnerability, malicious-package, withdrawal/deprecation, and verified provenance evidence. Returns ALLOW, REVIEW, BLOCK, or UNKNOWN with machine-readable reasons.