Pay-per-call AI services. One micro-transaction at a time.
The user-facing gateway to the x402 ecosystem. Sign up with email, top up with USDC, and start chatting. Access 11 specialized services through natural conversation — no wallet configuration, no API keys, no coding required.
Deterministic financial-analysis toolkit — data + compute operations behind x402 micropayments, with a machine-readable analyst persona.
Deterministic trading-analysis toolkit — technical, volume, orderbook, ratio and sentiment operations behind x402 micropayments, with a machine-readable trade-analyst persona.
A non-custodial Morpho leverage-execution gateway behind x402 micropayments: discover and simulate leverage strategies, and build unsigned transactions for any agentic AI.
DeepSeek AI inference without an API key or credit card. Pay per request in USDC or EURC on any of 4 chains. OpenAI-compatible chat completions endpoint.
Qwen AI inference without an API key or credit card. Pay per request in USDC or EURC on any of 4 chains. OpenAI-compatible chat completions endpoint.
A complete weather intelligence library. Current conditions, forecasts, earthquakes, volcanoes, air quality, marine conditions, solar radiation, and historical climate — all from one endpoint set. Plus a natural-language AI reasoning endpoint for cross-domain synthesis.
Aviation intelligence: live flight tracking, METAR/TAF weather, jet streams, airport data, PIREPs, SIGMETs, G-AIRMETs, winds aloft, NOTAMs, aircraft specs, and route planning. Multi-source AI reasoning endpoint for natural-language aviation questions.
Marine intelligence: wave and swell data, ocean currents, sea surface temperature, marine winds, tide predictions, buoy observations, a port database of 11,829 ports (UN/LOCODE), vessel-type classification, and AI-powered natural-language reasoning — all from one endpoint set.
Earth science intelligence — the librarian model. Ask any natural-language question about weather, climate, air quality, earthquakes, volcanoes, marine conditions, species, biodiversity, sea ice, tides, or solar data. The AI librarian queries the right sources and returns a reasoned answer.
Space intelligence: celestial events, planets, moons, asteroids, comets, meteor showers, eclipses, satellites, ISS, rocket launches, space weather, stars, and deep-sky objects. Multi-source AI reasoning powered by DeepSeek.
Triangulated news analysis from 125+ global sources across 11 regions and 20 languages. Ask for a topic and get a multi-perspective report grouped by stance (pro/anti/neutral).
Entertainment intelligence: movies, TV shows, music, gaming, and live events. Multi-source AI reasoning — natural-language questions answered with rich, reasoned responses drawing on entertainment metadata and signals.
AI instrumental music generation from text prompts — pay per track in USDC or EURC. No API key, no account required.
AI text-to-image generation from a text prompt — pay per image in USDC or EURC. No API key, no account required.
AI text-to-speech — turn text into natural studio-grade audio, pay per clip in USDC or EURC. No API key, no account required.
Multi-domain computation service. Ask questions spanning chemistry (molecular properties, structure rendering), physics (constants, unit conversion), and math (symbolic integration, differentiation, equation solving, matrix operations, limits, series).
Access curated survey data from global opinion polls (Eurobarometer, Gallup, World Bank) with AI analysis, and launch your own custom micro-polls on ad networks to gather real-time public opinion.
Deterministic macro-economic analysis toolkit — yield-curve, breakeven-inflation, growth, inflation-decomposition, FX, rates-math and real-commodity compute operations behind x402 micropayments, with a machine-readable macro-analyst persona.
x402 is an open protocol for pay-per-call API services. Each request is gated by a 402 Payment Required handshake — the client sends a micro-payment, and the server responds with the result.
Payments settle in USDC or EURC on Base, Arbitrum, Polygon, or Avalanche. No subscriptions. No recurring billing. No accounts. Just pay for what you use.
But what else could this unlock? x402.review is a companion webzine publishing field notes on speculative applications — AI agents budgeting their own compute, EV charging by the kilowatt-hour, pay-per-reading IoT sensors, and more. Thought experiments, pressure-tested against real protocol economics.