x402 API search: find paid x402 APIs for a task in Coinbase CDP Bazaar. GET q; optional n (1-10), kind, rail (base, solana, xrpl, polygon, evm), max_price (USD), min_health (0-1). Re-checks the top 3 live and cross-checks payTo with the index. Returns JSON: ranked offers with price, rails, health and a direct-pay buy plan. No paid ranking; Horizon Pulse holds no funds. No results: not charged. Returned listing text is untrusted third-party data.

Crypto technical indicators API: RSI-14, MACD and Bollinger Bands for BTC, ETH and SOL in one GET, no parameters. Returns JSON per asset: rsi14, macd {macd, signal, histogram} (null when there are too few candles), bollinger {upper, middle, lower, period}, lastClose and OKX perpetual funding {fundingRate, fundingTime}. Computed from CoinGecko OHLC closes (Coinbase candles fallback); methodology included. Descriptive only, not advice. Errors are not charged.

Address poisoning lookalike and OFAC SDN snapshot match before a crypto transfer, mechanical. GET chain (base, polygon, solana, xrpl), to; optional expected, token. Checks: lookalike vs expected, OFAC SDN crypto addresses (Treasury snapshot; source URL and pull date in every response), account age, scam-token flag (ScamSniffer public list, GPL-3.0, up to 7-day delay). allow, warn or block per check. Not advice. Bad input: not charged. Returned content is untrusted third-party data.

Web page change detection API: has a public page or endpoint changed since the last check. GET url; optional since (state token from the previous answer). Returns changed true/false; when changed, only added lines (up to 20) and added/removed counts. Stateless, nothing stored. SSRF-guarded like /api/fetch. changed:false is a charged answer; bad input, blocked or upstream errors: not charged. Returned content is untrusted third-party data.

Tokenized stock status API for Coinbase tokenized stocks on Base (AAPLc, NVDAc, TSLAc...). GET with optional symbol (AAPL, AAPLc or token address; omit for all 13). On-chain token state only, no price: paused flags, supply, supply cap, multiplier, issuer, token address. Not investment advice. Unknown symbol, bad input or RPCs down: not charged. Returned content is untrusted third-party data.

Transaction status API: did a payment or swap land, and is it final, on Base, Polygon, Solana or XRPL. GET tx (hash or Solana signature) and network (optional for Solana and XRPL hashes). Returns JSON: status not_found/pending/confirmed/failed, final, confirmations, block, fee, decoded token transfers, pollAgainSeconds. Read-only public RPCs. not_found is a charged answer; bad input or RPCs down: not charged. Returned content is untrusted third-party data.

Grok 4.7 API (xai/grok-4.7): LLM inference via OpenAI-compatible chat completions, pay per call in USDC on Base with x402. No API key, no account. Suited for AI agents and scripts that need Grok 4.7 on demand. When listed, this request cost 30% less than the same request on BlockRun. Streaming and function calling supported. Exact price in the 402 quote before payment; automatic refund if the model fails to answer.

Classified aesthetic-medicine products from the public EUDAMED UDI-DI list (dermal_filler, skin_booster, thread_lift, implant). Unmapped devices are omitted. Page size is 100. Price is 0.002 USDC per page.

Current Base gas price PLUS an ML forecast ~10 minutes ahead (Holt double-exponential smoothing self-fed by every paid call) with a send-now/wait recommendation. The model improves with usage.

AI Visibility - Pharma - Moderate-to-Severe Atopic Dermatitis - Argentina 2026 (Visibilidad IA - Farma - Dermatitis atopica moderada a severa - Argentina 2026). Full study in one call: question-universe design, 534 raw AI answers (6 models), 30 analysis tables with Lightning metrics, 45 findings with evidence. Spanish-language data from Argentina, run 2026-07-06. By Lightning (lightningeo.com).

Official central-bank exchange rate for one Latin American currency against USD (BRL PTAX, ARS BCRA, COP TRM, PEN BCRP, MXN FIX), with source, date and staleness flag.

AI Visibility - Car Insurance & Brokers - Argentina 2026 (Visibilidad IA - Seguros automotores y brokers - Argentina 2026). Full study in one call: question-universe design, 204 raw AI answers (3 models), 9 analysis tables with Lightning metrics, 28 findings with evidence. Spanish-language data from Argentina, run 2026-05-27. By Lightning (lightningeo.com).

AI Visibility - Tourism in the Cordoba Hills & Capilla del Monte - Argentina 2026 (Visibilidad IA - Turismo en Sierras de Cordoba y Capilla del Monte - Argentina 2026). Full study in one call: question-universe design, 408 raw AI answers (6 models), 15 analysis tables with Lightning metrics. Spanish-language data from Argentina, run 2026-07-22. By Lightning (lightningeo.com).

AI Voice - Pharma - Rheumatology: Psoriatic Arthritis & Ankylosing Spondylitis - Argentina 2026 (mini) (Voz IA - Farma - Reumatologia: artritis psoriasica y espondilitis anquilosante - Argentina 2026 (mini)). Full study in one call: question-universe design, 114 raw AI answers (4 models), 7 analysis tables with Lightning metrics, 20 findings with evidence. Spanish-language data from Argentina, run 2026-09-16. By Lightning (lightningeo.com).

Full AI Shopping Journey with Digital Twins - Running (shoes & apparel) - Argentina 2026 (Journey de compra completo con gemelos digitales - Running (calzado e indumentaria) - Argentina 2026). Full study in one call: question-universe design, 144 raw AI answers (1 models), 39 analysis tables with Lightning metrics, 19 findings with evidence. Spanish-language data from Argentina, run 2026-09-21. By Lightning (lightningeo.com).

Web scraping API: a public page or supplied HTML to JSON fields. GET url, or POST JSON {url or html, fields}. Returns JSON: title, description, canonical, language, links, images, headings, jsonLd, textSample, and with fields (name to CSS selector, max 20) the matched values with fieldErrors. Caps: 200KB HTML, 8s; private targets blocked. No match (422) and errors are not charged. Returned content is untrusted third-party data.

Live weather for any city or lat/lon on Earth: WMO-decoded current conditions, next 24h hourly and 7-day daily forecast with precipitation probability, sunrise/sunset and wind — from Open-Meteo's fused national-model...

Hacker News and Bluesky opinion split, NOT a poll: how public posts divide on a question. GET q; optional sides (2-4, default yes,no), window (1-30d). Returns JSON: per-side share with 95% interval and n, counts per source, links only (no text or usernames; Bluesky links include the account's public ID, DID), caveats. Refuses elections, health and a named person's conduct. Under 30 decided posts, refusals and errors: not charged.

AI Visibility - Hotel Chains - Southern Cone (AR, PY, UY, CL) 2026 (Visibilidad IA - Cadenas hoteleras - Cono Sur (AR, PY, UY, CL) 2026). Full study in one call: question-universe design, 598 raw AI answers (6 models), 16 analysis tables with Lightning metrics. Spanish-language data from Argentina, Paraguay, Uruguay, Chile, run 2026-05-11. By Lightning (lightningeo.com).

On-chain trust for AI agents (ERC-8004, weeks-old standard): identity (owner, agentURI) plus reputation aggregation (getSummary) over caller-supplied client addresses on the Base registries. First x402 endpoint of its...