{"x402Version":2,"catalogUrl":"https://coinrailz.com/x402/catalog","facilitatorUrl":"https://api.cdp.coinbase.com/platform/v2/x402","registrationEndpoint":"https://coinrailz.com/.well-known/agent-registration.json","totalServices":80,"featuredServices":19,"standardServices":61,"tier":"all","network":"eip155:8453","x402Network":"eip155:8453","paymentAsset":{"symbol":"USDC","address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","decimals":6,"chainId":8453},"services":[{"id":"iot-sensor-reading","name":"IoT Sensor Reading","description":"Single sensor reading from a registered IoT device: temperature, humidity, pressure, CO2, or motion. Requires a registered deviceId. Returns timestamped value with unit and quality flag.","endpoint":"/x402/iot-sensor-reading","method":"POST","priceUSD":0.025,"priceUSDC":0.025,"priceMicro":25000,"category":"iot-&-depin","tags":["IoT & DePIN"],"featured":true,"tier":"featured","discoverable":true,"firstCallFree":false},{"id":"first-call","name":"x402 Golden Path — First Paid Call","description":"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.","endpoint":"/x402/first-call","method":"POST","priceUSD":0.05,"priceUSDC":0.05,"priceMicro":50000,"category":"discovery","tags":["Discovery"],"featured":true,"tier":"featured","discoverable":true,"firstCallFree":false},{"id":"fire-alerts","name":"NASA Fire Alerts","description":"Real-time active fire detections from NASA FIRMS (MODIS + VIIRS). Returns fire radiative power, confidence level, and coordinates for any bounding box within the past 24 hours.","endpoint":"/x402/fire-alerts","method":"POST","priceUSD":0.05,"priceUSDC":0.05,"priceMicro":50000,"category":"satellite-intelligence","tags":["Satellite Intelligence"],"featured":true,"tier":"featured","discoverable":true,"firstCallFree":false},{"id":"air-quality","name":"Air Quality (Sentinel-5P)","description":"Atmospheric pollutant concentrations (NO2, SO2, CO, O3, aerosols) from ESA Sentinel-5P TROPOMI satellite for any global coordinate or bounding box.","endpoint":"/x402/air-quality","method":"POST","priceUSD":0.05,"priceUSDC":0.05,"priceMicro":50000,"category":"satellite-intelligence","tags":["Satellite Intelligence"],"featured":true,"tier":"featured","discoverable":true,"firstCallFree":false},{"id":"ai-inference","name":"AI Inference (GPT-4o-mini)","description":"Pay-per-call GPT-4o-mini inference via x402 micropayment — no API key required. Supports system prompt, user message, and temperature. Returns completion text.","endpoint":"/x402/ai-inference","method":"POST","priceUSD":0.05,"priceUSDC":0.05,"priceMicro":50000,"category":"ai-services","tags":["AI Services"],"featured":true,"tier":"featured","discoverable":true,"firstCallFree":false},{"id":"b20-token-info","name":"B20 Token Info","description":"Metadata, total supply, compliance mode, and freeze status for any B20 Native Token Standard token on Base mainnet. Returns ERC-20 fields plus B20-specific compliance fields. Gracefully handles plain ERC-20 tokens.","endpoint":"/x402/b20-token-info","method":"POST","priceUSD":0.05,"priceUSDC":0.05,"priceMicro":50000,"category":"base-native","tags":["Base Native"],"featured":true,"tier":"featured","discoverable":true,"firstCallFree":false},{"id":"gas-price-oracle","name":"Gas Price Oracle","description":"Real-time EIP-1559 gas prices (base fee, priority fee, fast/safe/slow tiers) for Ethereum, Base, Polygon, Arbitrum, and Optimism with USD cost estimates per transaction type.","endpoint":"/x402/gas-price-oracle","method":"POST","priceUSD":0.1,"priceUSDC":0.1,"priceMicro":100000,"category":"trading-intelligence","tags":["Trading Intelligence"],"featured":true,"tier":"featured","discoverable":true,"firstCallFree":true},{"id":"fleet-telematics","name":"Fleet Telematics","description":"Real-time fleet data from IoT-connected vehicles: GPS location, fuel consumption, driver behavior scores, and route efficiency metrics. Requires registered fleet deviceId.","endpoint":"/x402/fleet-telematics","method":"POST","priceUSD":0.1,"priceUSDC":0.1,"priceMicro":100000,"category":"iot-&-depin","tags":["IoT & DePIN"],"featured":true,"tier":"featured","discoverable":true,"firstCallFree":false},{"id":"ping","name":"Ping/Echo Service","description":"Platform health probe — returns service status, current timestamp, and payment infrastructure readiness. Use as a low-cost connectivity test before calling higher-priced services.","endpoint":"/x402/ping","method":"POST","priceUSD":0.25,"priceUSDC":0.25,"priceMicro":250000,"category":"discovery","tags":["Discovery"],"featured":true,"tier":"featured","discoverable":true,"firstCallFree":false},{"id":"prediction-market-spread","name":"Prediction Market Cross-Platform Spread","description":"Live cross-platform spread analysis: Polymarket vs Kalshi for identical real-world events. Returns YES probability divergence, arbitrage opportunity ranking by spread magnitude, matchConfidence, actionHint, and edgeBps per opportunity.","endpoint":"/x402/prediction-market-spread","method":"POST","priceUSD":0.25,"priceUSDC":0.25,"priceMicro":250000,"category":"prediction-markets","tags":["Prediction Markets"],"featured":true,"tier":"featured","discoverable":true,"firstCallFree":false},{"id":"satellite-earthdata","name":"NASA Earthdata Gateway","description":"NASA Earthdata gateway: precipitation, granule search, SST, soil moisture, and ocean color in one endpoint. Specify the product field to select dataset type and coordinates.","endpoint":"/x402/satellite-earthdata","method":"POST","priceUSD":0.25,"priceUSDC":0.25,"priceMicro":250000,"category":"satellite-intelligence","tags":["Satellite Intelligence"],"featured":true,"tier":"featured","discoverable":true,"firstCallFree":false},{"id":"earthdata-precipitation","name":"NASA Precipitation Data","description":"Real-time observed rain rate at any global coordinate from NASA IMERG. Input: latitude, longitude, and date.","endpoint":"/x402/earthdata-precipitation","method":"POST","priceUSD":0.25,"priceUSDC":0.25,"priceMicro":250000,"category":"satellite-intelligence","tags":["Satellite Intelligence"],"featured":true,"tier":"featured","discoverable":true,"firstCallFree":false},{"id":"earthdata-ocean-color","name":"NASA Ocean Color","description":"MODIS Aqua ocean chlorophyll-a concentration via NASA CMR at 4km resolution. Input: coordinates or bounding box and date range.","endpoint":"/x402/earthdata-ocean-color","method":"POST","priceUSD":0.25,"priceUSDC":0.25,"priceMicro":250000,"category":"satellite-intelligence","tags":["Satellite Intelligence"],"featured":true,"tier":"featured","discoverable":true,"firstCallFree":false},{"id":"tokenized-yield-compare","name":"Tokenized Treasury Yield Comparison","description":"Live APY comparison across tokenized RWA protocols: Ondo (USDY), Backed (bIB01), Superstate (USTB), Mountain Protocol (USDM), OpenEden (TBILL), Hashnote (USYC), Maple Finance. Sourced from DeFi Llama.","endpoint":"/x402/tokenized-yield-compare","method":"POST","priceUSD":0.25,"priceUSDC":0.25,"priceMicro":250000,"category":"rwa-&-tokenization","tags":["RWA & Tokenization"],"featured":true,"tier":"featured","discoverable":true,"firstCallFree":false},{"id":"rwa-nav-oracle","name":"RWA Synthetic NAV Oracle","description":"Synthetic market-based NAV estimate for RWA tokens (real estate, private credit, tokenized treasuries). Returns current NAV per share, implied yield, and protocol metadata.","endpoint":"/x402/rwa-nav-oracle","method":"POST","priceUSD":0.5,"priceUSDC":0.5,"priceMicro":500000,"category":"rwa-&-tokenization","tags":["RWA & Tokenization"],"featured":true,"tier":"featured","discoverable":true,"firstCallFree":false},{"id":"robinhood-token-price","name":"Robinhood Chain Token Price","description":"Real-time token price and pool data for any token on Robinhood Chain (eip155:4663) via Chainlink SVR feeds. Returns price, 24h change, and top liquidity pool.","endpoint":"/x402/robinhood-token-price","method":"POST","priceUSD":0.6,"priceUSDC":0.6,"priceMicro":600000,"category":"robinhood-chain","tags":["Robinhood Chain"],"featured":true,"tier":"featured","discoverable":true,"firstCallFree":false},{"id":"instant-agent-wallet","name":"Instant Agent Wallet","description":"Create a session-scoped ephemeral EVM wallet for AI agent operations. Returns address and encrypted key material with USDC funding instructions. Designed for single-session autonomous use.","endpoint":"/x402/instant-agent-wallet","method":"POST","priceUSD":1,"priceUSDC":1,"priceMicro":1000000,"category":"execution","tags":["Execution"],"featured":true,"tier":"featured","discoverable":true,"firstCallFree":false},{"id":"robinhood-dex-pools","name":"Robinhood Chain DEX Pools","description":"Top DEX liquidity pools on Robinhood Chain. Pass a token address for token-specific pools, or omit for chain-wide top pools by liquidity. Includes fee tier, 24h volume, and pool addresses.","endpoint":"/x402/robinhood-dex-pools","method":"POST","priceUSD":1.25,"priceUSDC":1.25,"priceMicro":1250000,"category":"robinhood-chain","tags":["Robinhood Chain"],"featured":true,"tier":"featured","discoverable":true,"firstCallFree":false},{"id":"verified-agent-identity","name":"Agent Identity Ownership Check","description":"Check whether a wallet owns an ERC-8004 identity NFT on Base mainnet and return an ownership, wallet-activity, and signature status assessment. This service queries existing on-chain records; it does not register an agent, mint an NFT, or write to the IdentityRegistry.","endpoint":"/x402/verified-agent-identity","method":"POST","priceUSD":5,"priceUSDC":5,"priceMicro":5000000,"category":"premium","tags":["Premium"],"featured":true,"tier":"featured","discoverable":true,"firstCallFree":false},{"id":"vlt-usdc-deposit","name":"vltUSDC Vault Deposit Calldata","description":"FREE — No payment required. Returns unsigned approve + deposit calldata for the Bankroll Network vltUSDC vault on Ethereum mainnet. Two modes: balanced (VLT+USDC, 3 txs) or USDC-only via ZapHelper with live swap quote (2 txs). Vault auto-compounds VLT/USDC Uniswap V4 1% LP fees. Builder Pattern — zero custody. Use vlt-usdc-withdraw to exit.","endpoint":"/x402/vlt-usdc-deposit","method":"POST","priceUSD":0,"priceUSDC":0,"priceMicro":0,"category":"defi-&-yield","tags":["DeFi & Yield"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"vlt-usdc-withdraw","name":"vltUSDC Vault Withdraw Calldata","description":"FREE — No payment required. Returns 1 unsigned vault.redeem(shares, receiver) transaction. Redemption is pro-rata in-kind (no swap, no slippage parameters on-chain). Estimated VLT + USDC output amounts are included as informational context only — they are NOT encoded in the calldata. Builder Pattern — zero custody. For a USDC-only exit (VLT sold via Uniswap V2), use vlt-usdc-zap-withdraw instead.","endpoint":"/x402/vlt-usdc-withdraw","method":"POST","priceUSD":0,"priceUSDC":0,"priceMicro":0,"category":"defi-&-yield","tags":["DeFi & Yield"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"vlt-usdc-zap-withdraw","name":"vltUSDC Vault USDC-Only Exit Calldata","description":"FREE — No payment required. Returns 3 unsigned Ethereum transactions that convert vltUSDC shares entirely to USDC: (1) vault.redeem(shares, recipient) — burns shares, sends VLT + USDC to recipient; (2) VLT.approve(uniswapV2Router, vltAmount); (3) v2Router.swapExactTokensForTokens(VLT → WETH → USDC). VLT and USDC amounts from step 1 use vault.previewRedeem (exact on-chain, no approximation). minAmountOut for the V2 swap is computed from live getReserves with 2% slippage and enforced on-chain. Fails closed if any on-chain data is unavailable. Builder Pattern — zero custody. For a 1-tx exit that keeps VLT, use vlt-usdc-withdraw instead.","endpoint":"/x402/vlt-usdc-zap-withdraw","method":"POST","priceUSD":0,"priceUSDC":0,"priceMicro":0,"category":"defi-&-yield","tags":["DeFi & Yield"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"solana-yield-finder","name":"Solana Yield Finder","description":"Real-time Solana lending and yield rates from Kamino, Marginfi, and Solend. Returns APY, TVL, utilization rate, and risk tier per protocol.","endpoint":"/x402/solana-yield-finder","method":"POST","priceUSD":0.05,"priceUSDC":0.05,"priceMicro":50000,"category":"trading-intelligence","tags":["Trading Intelligence"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"weather-imagery","name":"Weather Satellite Imagery","description":"High-resolution weather satellite imagery from NASA GIBS: GOES, MODIS, and Suomi-NPP. Input: bounding box, date, and imagery type (IR/visible/water vapor).","endpoint":"/x402/weather-imagery","method":"POST","priceUSD":0.05,"priceUSDC":0.05,"priceMicro":50000,"category":"satellite-intelligence","tags":["Satellite Intelligence"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"weather-station-data","name":"Weather Station Data","description":"Hyperlocal weather data from IoT weather stations: temperature, humidity, pressure, wind speed/direction, and precipitation. Input: coordinates or station ID.","endpoint":"/x402/weather-station-data","method":"POST","priceUSD":0.05,"priceUSDC":0.05,"priceMicro":50000,"category":"iot-&-depin","tags":["IoT & DePIN"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"rh-stock-price","name":"Robinhood Chain Stock Price Feed","description":"Live Chainlink SVR price feeds for 35+ stock tokens (AAPL, NVDA, SPY, TSLA, META, AMZN, MSFT, GOOGL, COIN, PLTR, and more) on Robinhood Chain. 8-decimal precision. Batch up to 10 symbols per call.","endpoint":"/x402/rh-stock-price","method":"POST","priceUSD":0.05,"priceUSDC":0.05,"priceMicro":50000,"category":"robinhood-chain","tags":["Robinhood Chain"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"vlt-stats","name":"VLT + vltUSDC Vault Stats","description":"Live VLT token price, market cap, liquidity, and vltUSDC vault stats (TVL, estimated LP fee APR, L/share). Sources: CoinGecko + DexScreener (market) and Alchemy on-chain reads (vault state). Use for autonomous allocation decisions alongside vlt-usdc-deposit and vlt-usdc-withdraw.","endpoint":"/x402/vlt-stats","method":"POST","priceUSD":0.05,"priceUSDC":0.05,"priceMicro":50000,"category":"defi-&-yield","tags":["DeFi & Yield"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"token-metadata","name":"Token Metadata Lookup","description":"Token name, symbol, decimals, total supply, and contract details for any ERC-20 on Ethereum, Base, Polygon, or Arbitrum. Resolves from on-chain state — no centralized API dependency.","endpoint":"/x402/token-metadata","method":"POST","priceUSD":0.1,"priceUSDC":0.1,"priceMicro":100000,"category":"trading-intelligence","tags":["Trading Intelligence"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":true},{"id":"vegetation","name":"Vegetation Health (NDVI)","description":"NDVI vegetation health indices from NASA MODIS and ESA Sentinel-2 for any global coordinate or region. Returns current health score, historical trend, and seasonal anomaly.","endpoint":"/x402/vegetation","method":"POST","priceUSD":0.1,"priceUSDC":0.1,"priceMicro":100000,"category":"satellite-intelligence","tags":["Satellite Intelligence"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"flood-detection","name":"Flood Detection","description":"SAR-based flood extent mapping from ESA Sentinel-1 — all-weather, day/night capable. Input: bounding box and date. Returns flood polygon and affected area estimate in km².","endpoint":"/x402/flood-detection","method":"POST","priceUSD":0.1,"priceUSDC":0.1,"priceMicro":100000,"category":"satellite-intelligence","tags":["Satellite Intelligence"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"b20-transfer-check","name":"B20 Transfer Check","description":"Simulate whether a B20 token transfer will succeed given current freeze/blocklist/allowlist state on Base mainnet. Returns will_succeed, specific blockers (SENDER_FROZEN, RECIPIENT_BLOCKLISTED, MEMO_REQUIRED). Uses live on-chain state.","endpoint":"/x402/b20-transfer-check","method":"POST","priceUSD":0.1,"priceUSDC":0.1,"priceMicro":100000,"category":"base-native","tags":["Base Native"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"land-use","name":"Land Use Classification","description":"Land cover classification from NASA Landsat and ESA Sentinel WorldCover. Input: bounding box and date. Returns dominant land class (urban/cropland/forest/water/etc.) with confidence.","endpoint":"/x402/land-use","method":"POST","priceUSD":0.15,"priceUSDC":0.15,"priceMicro":150000,"category":"satellite-intelligence","tags":["Satellite Intelligence"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"dex-liquidity","name":"DEX Liquidity Monitor","description":"Real-time liquidity depth, TVL, price impact, and 24h volume for a token pair across Uniswap V2/V3, Curve, and Aerodrome. Input: token pair + chain.","endpoint":"/x402/dex-liquidity","method":"POST","priceUSD":0.2,"priceUSDC":0.2,"priceMicro":200000,"category":"trading-intelligence","tags":["Trading Intelligence"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"approval-manager","name":"Token Approval Manager","description":"Check current ERC-20 allowances and generate unsigned approve() calldata for any spender on any EVM chain. Required pre-step before DEX swaps or DeFi protocol interactions.","endpoint":"/x402/approval-manager","method":"POST","priceUSD":0.2,"priceUSDC":0.2,"priceMicro":200000,"category":"trading-intelligence","tags":["Trading Intelligence"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"token-price","name":"Token Price Feed","description":"Token price, 24h change, volume, and market cap from CoinGecko and DEX Screener. Covers 10,000+ tokens including long-tail assets unavailable on major centralized exchanges.","endpoint":"/x402/token-price","method":"POST","priceUSD":0.25,"priceUSDC":0.25,"priceMicro":250000,"category":"trading-intelligence","tags":["Trading Intelligence"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"token-sentiment","name":"Token Sentiment Analyzer","description":"Social sentiment score for any token from X/Twitter and Reddit. Returns bullish/bearish ratio, momentum direction, and top discussion themes over configurable time windows.","endpoint":"/x402/token-sentiment","method":"POST","priceUSD":0.25,"priceUSDC":0.25,"priceMicro":250000,"category":"trading-intelligence","tags":["Trading Intelligence"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"polymarket-events","name":"Polymarket Events","description":"Trending Polymarket prediction market events with current yes/no prices, volume, and liquidity across politics, crypto, sports, and science.","endpoint":"/x402/polymarket-events","method":"POST","priceUSD":0.25,"priceUSDC":0.25,"priceMicro":250000,"category":"prediction-markets","tags":["Prediction Markets"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"polymarket-search","name":"Polymarket Search","description":"Search Polymarket prediction markets by keyword or topic. Returns matching events with current prices, volume, and market close date.","endpoint":"/x402/polymarket-search","method":"POST","priceUSD":0.25,"priceUSDC":0.25,"priceMicro":250000,"category":"prediction-markets","tags":["Prediction Markets"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"kalshi-markets","name":"Kalshi Markets","description":"Active markets from Kalshi, a CFTC-regulated prediction exchange. Returns yes/no ask prices, volume, and open interest. Filter by category or keyword.","endpoint":"/x402/kalshi-markets","method":"POST","priceUSD":0.25,"priceUSDC":0.25,"priceMicro":250000,"category":"prediction-markets","tags":["Prediction Markets"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"kalshi-search","name":"Kalshi Search","description":"Search Kalshi prediction markets by keyword or event type. Returns matching CFTC-regulated markets with current yes prices, volume, and expiration dates.","endpoint":"/x402/kalshi-search","method":"POST","priceUSD":0.25,"priceUSDC":0.25,"priceMicro":250000,"category":"prediction-markets","tags":["Prediction Markets"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"earthdata-granules","name":"NASA Earthdata Granule Search","description":"Search 1B+ NASA satellite granules by bounding box, date range, and collection (Landsat/Sentinel/MODIS/VIIRS). Returns download URLs and granule metadata.","endpoint":"/x402/earthdata-granules","method":"POST","priceUSD":0.25,"priceUSDC":0.25,"priceMicro":250000,"category":"satellite-intelligence","tags":["Satellite Intelligence"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"earthdata-sst","name":"NASA Sea Surface Temperature","description":"Sea surface temperature at any ocean coordinate from NASA MUR-JPL multi-scale analysis. Sub-meter spatial accuracy. Input: lat/lon and date.","endpoint":"/x402/earthdata-sst","method":"POST","priceUSD":0.25,"priceUSDC":0.25,"priceMicro":250000,"category":"satellite-intelligence","tags":["Satellite Intelligence"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"earthdata-soil-moisture","name":"NASA Soil Moisture","description":"Soil moisture granule discovery from NASA SMAP SPL3SMP at 36km resolution. Returns nearest granule, volumetric water content estimate, and quality flag.","endpoint":"/x402/earthdata-soil-moisture","method":"POST","priceUSD":0.25,"priceUSDC":0.25,"priceMicro":250000,"category":"satellite-intelligence","tags":["Satellite Intelligence"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"iot-device-stream","name":"IoT Device Stream","description":"Real-time streaming sensor readings from registered IoT devices: temperature, humidity, pressure, CO2, and motion. Returns latest N readings with timestamps, units, and quality flags.","endpoint":"/x402/iot-device-stream","method":"POST","priceUSD":0.25,"priceUSDC":0.25,"priceMicro":250000,"category":"iot-&-depin","tags":["IoT & DePIN"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"b20-compliance-scan","name":"B20 Compliance Scan","description":"Deep compliance scan of a wallet across multiple B20 token issuers on Base mainnet. Returns frozen/blocklisted/allowlisted status per token, frozen-until timestamps, and overall risk level (clear/restricted/mixed/unknown).","endpoint":"/x402/b20-compliance-scan","method":"POST","priceUSD":0.25,"priceUSDC":0.25,"priceMicro":250000,"category":"base-native","tags":["Base Native"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"transaction-builder","name":"Transaction Builder","description":"Encode and prepare any EVM transaction: ABI encoding, calldata construction, gas estimation, and nonce lookup for Ethereum, Base, Arbitrum, and Optimism.","endpoint":"/x402/transaction-builder","method":"POST","priceUSD":0.3,"priceUSDC":0.3,"priceMicro":300000,"category":"execution","tags":["Execution"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"whale-alerts","name":"Whale Wallet Alerts","description":"Recent large-value wallet transfers for any token or address: amount, sender/receiver, exchange flow direction, and historical pattern context. Threshold configurable, defaults to >$50K.","endpoint":"/x402/whale-alerts","method":"POST","priceUSD":0.35,"priceUSDC":0.35,"priceMicro":350000,"category":"trading-intelligence","tags":["Trading Intelligence"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"batch-quote","name":"Batch Quote Service","description":"DEX swap quotes for multiple token pairs in a single call. Returns best route, price impact, gas estimate, and minimum received per pair — reduces round-trips for agents comparing multiple swaps.","endpoint":"/x402/batch-quote","method":"POST","priceUSD":0.4,"priceUSDC":0.4,"priceMicro":400000,"category":"trading-intelligence","tags":["Trading Intelligence"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"stock-sentiment","name":"Stock Sentiment Analysis","description":"AI stock sentiment for any ticker integrating earnings transcripts, news flow, options flow, and institutional positioning. Returns directional bias with short and medium-term signal strength.","endpoint":"/x402/stock-sentiment","method":"POST","priceUSD":0.4,"priceUSDC":0.4,"priceMicro":400000,"category":"investment","tags":["Investment"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"forex-sentiment","name":"Forex Sentiment Analysis","description":"AI forex sentiment for major currency pairs integrating central bank signals, economic indicators, and news flow. Returns directional bias (bullish/bearish), confidence score, and top driving factors.","endpoint":"/x402/forex-sentiment","method":"POST","priceUSD":0.4,"priceUSDC":0.4,"priceMicro":400000,"category":"investment","tags":["Investment"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"multi-chain-balance","name":"Multi-Chain Balance Checker","description":"Native token and ERC-20 balances for an EVM wallet across Ethereum, Base, Polygon, Arbitrum, Optimism, and 2 more chains in a single call. Returns balances with live USD values.","endpoint":"/x402/multi-chain-balance","method":"POST","priceUSD":0.5,"priceUSDC":0.5,"priceMicro":500000,"category":"trading-intelligence","tags":["Trading Intelligence"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"trending-tokens","name":"Trending Tokens Feed","description":"Top trending tokens ranked by composite score: social volume, price momentum, DEX activity, and whale accumulation patterns. Returns ranked list with 24h stats and risk flags.","endpoint":"/x402/trending-tokens","method":"POST","priceUSD":0.5,"priceUSDC":0.5,"priceMicro":500000,"category":"trading-intelligence","tags":["Trading Intelligence"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"portfolio-tracker","name":"Portfolio Tracker","description":"Real-time portfolio value, PnL, and allocation breakdown for any EVM wallet. Aggregates token balances with live USD prices and 24h performance across multiple chains.","endpoint":"/x402/portfolio-tracker","method":"POST","priceUSD":0.5,"priceUSDC":0.5,"priceMicro":500000,"category":"trading-intelligence","tags":["Trading Intelligence"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"wallet-risk","name":"Wallet Risk Analyzer","description":"Multi-factor wallet risk report: sanctions exposure, mixer interactions, darknet market activity, and concentration risk. Returns risk tier (LOW/MEDIUM/HIGH/CRITICAL) with evidence and recommended actions.","endpoint":"/x402/wallet-risk","method":"POST","priceUSD":0.5,"priceUSDC":0.5,"priceMicro":500000,"category":"trading-intelligence","tags":["Trading Intelligence"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"payment-processing","name":"Payment Processing","description":"Process USDC payments across EVM chains with automatic routing and fee optimization. Returns transaction receipt, confirmed amount, and destination chain confirmation.","endpoint":"/x402/payment-processing","method":"POST","priceUSD":0.5,"priceUSDC":0.5,"priceMicro":500000,"category":"execution","tags":["Execution"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"sentiment-analysis","name":"Market Sentiment Analysis","description":"Aggregated market sentiment for any crypto asset from X/Twitter, Reddit, and news sources. Returns bullish/bearish score (0-100), momentum signal, and 24h sentiment delta.","endpoint":"/x402/sentiment-analysis","method":"POST","priceUSD":0.5,"priceUSDC":0.5,"priceMicro":500000,"category":"investment","tags":["Investment"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"polymarket-odds","name":"Polymarket Odds","description":"Current odds and price history for a specific Polymarket event. Returns yes/no bid/ask, 24h volume, and last trade timestamp.","endpoint":"/x402/polymarket-odds","method":"POST","priceUSD":0.5,"priceUSDC":0.5,"priceMicro":500000,"category":"prediction-markets","tags":["Prediction Markets"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"prediction-market-odds","name":"Prediction Market Odds","description":"Aggregated prediction market odds from Polymarket and Kalshi for any topic. Returns consensus probability with per-platform breakdown and total volume.","endpoint":"/x402/prediction-market-odds","method":"POST","priceUSD":0.5,"priceUSDC":0.5,"priceMicro":500000,"category":"prediction-markets","tags":["Prediction Markets"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"kalshi-odds","name":"Kalshi Odds","description":"Current yes/no prices and orderbook depth for a specific Kalshi market. Returns bid/ask spread, last price, volume, and open interest for CFTC-regulated event contracts.","endpoint":"/x402/kalshi-odds","method":"POST","priceUSD":0.5,"priceUSDC":0.5,"priceMicro":500000,"category":"prediction-markets","tags":["Prediction Markets"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"iot-bulk-data","name":"IoT Bulk Data Export","description":"Historical data export from IoT devices: bulk sensor readings filtered by device, time range, and sensor type. 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Returns estimated value range with confidence interval and key value drivers.","endpoint":"/x402/property-valuation","method":"POST","priceUSD":0.75,"priceUSDC":0.75,"priceMicro":750000,"category":"real-estate","tags":["Real Estate"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"fraud-detection","name":"Fraud Detection","description":"Informational technical fraud-risk output for an on-chain transaction or wallet. It is not banking, legal, or regulated advice.","endpoint":"/x402/fraud-detection","method":"POST","priceUSD":0.75,"priceUSDC":0.75,"priceMicro":750000,"category":"risk-&-compliance-apis","tags":["Risk & Compliance APIs"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"correlation-matrix","name":"Correlation Matrix","description":"Price correlation matrix for up to 10 crypto assets over 7/30/90-day windows. Returns Pearson coefficients to identify diversification gaps and correlated risk in a portfolio.","endpoint":"/x402/correlation-matrix","method":"POST","priceUSD":0.75,"priceUSDC":0.75,"priceMicro":750000,"category":"market-intelligence","tags":["Market Intelligence"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"robinhood-chain-stats","name":"Robinhood Chain Health Stats","description":"Chain-level health metrics for Robinhood Chain (eip155:4663): current block height, gas price, validator count, and network TPS via Chainlink on-chain reads.","endpoint":"/x402/robinhood-chain-stats","method":"POST","priceUSD":0.75,"priceUSDC":0.75,"priceMicro":750000,"category":"robinhood-chain","tags":["Robinhood Chain"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"rh-bridge-usdc","name":"Robinhood Chain Bootstrap Bridge","description":"Bridge 0.50 USDC from Base (chainId 8453) to USDG on Robinhood Chain (chainId 4663) via Across Protocol. Treasury-funded — no pre-approval required. Returns unsigned bridge calldata; USDG arrives in ~30 seconds. Ideal for bootstrapping an RH Chain agent wallet.","endpoint":"/x402/rh-bridge-usdc","method":"POST","priceUSD":0.75,"priceUSDC":0.75,"priceMicro":750000,"category":"robinhood-chain","tags":["Robinhood Chain"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"contract-scan","name":"Contract Security Scanner","description":"Smart contract security scan returning a safety score (0-100) and structured vulnerability findings (reentrancy, overflow, access control, logic flaws) for any deployed EVM contract address.","endpoint":"/x402/contract-scan","method":"POST","priceUSD":1,"priceUSDC":1,"priceMicro":1000000,"category":"execution","tags":["Execution"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"lease-analysis","name":"Lease Analysis","description":"Commercial lease terms extraction and risk analysis. Returns key clauses (rent escalation, break options, TI allowance), market rate comparison, and red-flag summary.","endpoint":"/x402/lease-analysis","method":"POST","priceUSD":1,"priceUSDC":1,"priceMicro":1000000,"category":"real-estate","tags":["Real Estate"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"trading-signal","name":"Trading Signal Generator","description":"Technical analysis signals — RSI, MACD, Bollinger Bands, volume profile, and trend strength — for any crypto pair. Returns buy/sell/hold verdict with confidence interval and key price levels.","endpoint":"/x402/trading-signal","method":"POST","priceUSD":1,"priceUSDC":1,"priceMicro":1000000,"category":"investment","tags":["Investment"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"risk-metrics","name":"Risk Metrics Calculator","description":"Portfolio risk metrics: Value at Risk (95%/99% confidence), Sharpe ratio, max drawdown, and Sortino ratio for any token or portfolio, based on historical price data.","endpoint":"/x402/risk-metrics","method":"POST","priceUSD":1,"priceUSDC":1,"priceMicro":1000000,"category":"market-intelligence","tags":["Market Intelligence"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"instant-api-key","name":"Instant API Key","description":"Frictionless API key provisioning via USDC payment. Pay once, receive a prepaid credits key instantly — no sign-up, no OAuth, no waitlist. Works across the canonical x402 service catalog.","endpoint":"/x402/instant-api-key","method":"POST","priceUSD":1,"priceUSDC":1,"priceMicro":1000000,"category":"developer-tools","tags":["Developer Tools"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"credit-risk-score","name":"Credit Risk Score","description":"Informational technical on-chain risk score for an EVM wallet. It is not credit underwriting, lending, banking, or regulated advice.","endpoint":"/x402/credit-risk-score","method":"POST","priceUSD":1.25,"priceUSDC":1.25,"priceMicro":1250000,"category":"risk-&-compliance-apis","tags":["Risk & Compliance APIs"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"arbitrage-scanner","name":"Arbitrage Scanner","description":"Scan for real-time arbitrage opportunities across Uniswap, Curve, and Balancer. 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It is not legal advice, a banking service, or a regulated compliance determination.","endpoint":"/x402/compliance-check","method":"POST","priceUSD":1.75,"priceUSDC":1.75,"priceMicro":1750000,"category":"risk-&-compliance-apis","tags":["Risk & Compliance APIs"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"agent-create-wallet","name":"Agent Wallet Provisioning (CDP)","description":"Create a persistent Coinbase Developer Platform (CDP) managed wallet for AI agents on Base mainnet. 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Input current holdings and risk tolerance; returns target allocation with projected Sharpe ratio and expected return improvement.","endpoint":"/x402/portfolio-optimization","method":"POST","priceUSD":2,"priceUSDC":2,"priceMicro":2000000,"category":"investment","tags":["Investment"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"compliance-consultation","name":"Compliance Consultation","description":"Informational technical regulatory-analysis output for DeFi protocols, token launches, and on-chain operations. It is not legal advice or a regulated compliance service.","endpoint":"/x402/compliance-consultation","method":"POST","priceUSD":5,"priceUSDC":5,"priceMicro":5000000,"category":"premium","tags":["Premium"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false},{"id":"smart-contract-audit","name":"Smart Contract Audit","description":"AI security audit for Solidity contracts: reentrancy, overflow/underflow, access control, and business logic flaws. Returns severity-ranked findings (CRITICAL/HIGH/MEDIUM/LOW) with line references and remediation guidance.","endpoint":"/x402/smart-contract-audit","method":"POST","priceUSD":10,"priceUSDC":10,"priceMicro":10000000,"category":"premium","tags":["Premium"],"featured":false,"tier":"standard","discoverable":true,"firstCallFree":false}],"firstCallFreeServices":["gas-price-oracle","token-metadata"],"quickStart":{"docsUrl":"https://coinrailz.com/docs/x402-quick-start","tierFiltering":"https://coinrailz.com/x402/catalog?tier=featured | ?tier=standard","note":"First call is FREE on gas-price-oracle and token-metadata services!"}}