Pay-per-call: URL to markdown (md)

Pay-per-call: JSON Schema validator

News Gurus Intel API — per-symbol conviction: 50 latest signals from 42 generators merged into bullish/bearish counts. Example NVDA: 12 signals, 8 bullish, 3 bearish, avg confidence 0.61, each typed (options_flow, dark_pool, congressional, technical). The only x402 API selling derived US-equity signals rather than raw quotes. Flagship read for 'what does the evidence say about TICKER right now'. Educational data, not financial advice.

Audits target x402 endpoints for authentic payTo wallet, pricing, challenge headers, and schema hijack risks.

Witness the SHA-256 fingerprint of a literary work: submit a title, content hash, and optional pen name; receive a tamper-evident, hash-chained receipt. Timestamping, not endorsement. We never see the work itself.

Top Polymarket whale orderbook imbalances and CLOB skew right now, pre-sanitized with CanaryGuard.

Mempool congestion: pending tx, size, usage — flat $0.001 per call, USDC on Base, no signup.

Exoplanet lookup (NASA Exoplanet Archive) by planet or host star - discovery, orbit, size, mass and host star

Status of 16 cloud and SaaS providers in one call - operational vs degraded

Palmyr: POST /social/twitter/post

Physics paper search on INSPIRE-HEP - title, authors, citation count, arXiv id and DOI for high energy physics and astrophysics literature

ClinVar variants for a gene filtered by clinical significance - counts and latest records

Upcoming US company earnings calendar — which companies report in a date window, with estimated EPS and revenue, as JSON. Default is the next 7 days; filter with ?from=YYYY-MM-DD&to=YYYY-MM-DD (window up to 30 days) or ?symbol=AAPL. Use for: earnings season monitoring, upcoming earnings this week, portfolio earnings alerts, event-driven trading calendar, pre-earnings positioning. $0.005 USDC per call.

BTC and ETH options implied volatility index (Deribit DVOL) - current level, 24h change and regime

Geocode a street address or landmark to latitude and longitude - up to five ranked results with country, region and type (OpenStreetMap)

Pay-per-call: OFAC SDN address screen

x402 ping health check - a paid round trip that returns server time and a request id

All active soccer markets with live probabilities in one call — One-call board of the most active soccer prediction markets: top markets by volume with blended live probabilities, resolution dates, and per-market slugs for drill-down. The bulk read for agents tracking the state of soccer at a glance.

Secure random integer in a range plus random bytes as hex and base64

BTC and ETH options chain for an expiry - strike, type, implied volatility, open interest and volume