Coin Railz

[$0.25 USDC] Ping/Echo Service — Platform health probe — returns service status, current timestamp, and payment infrastructure readiness. Use as a low-cost connectivity test before calling higher-priced services.

[$0.05 USDC] 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.

[$0.03 USDC] IoT Sensor Reading — 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.

[$0.05 USDC] AI Inference (GPT-4o-mini) — Pay-per-call GPT-4o-mini inference via x402 micropayment — no API key required. Supports system prompt, user message, and temperature. Returns completion text.

[$0.10 USDC] Gas Price Oracle — 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.

[$0.05 USDC] Weather Station Data — Hyperlocal weather data from IoT weather stations: temperature, humidity, pressure, wind speed/direction, and precipitation. Input: coordinates or station ID.

[$0.10 USDC] Fleet Telematics — Real-time fleet data from IoT-connected vehicles: GPS location, fuel consumption, driver behavior scores, and route efficiency metrics. Requires registered fleet deviceId.

[$0.25 USDC] IoT Device Stream — 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.

[$0.50 USDC] IoT Bulk Data Export — Historical data export from IoT devices: bulk sensor readings filtered by device, time range, and sensor type. Returns paginated timestamped readings with units and quality flags.

[$0.05 USDC] Solana Yield Finder — Real-time Solana lending and yield rates from Kamino, Marginfi, and Solend. Returns APY, TVL, utilization rate, and risk tier per protocol.

[$0.10 USDC] Token Metadata Lookup — 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.

[$0.20 USDC] DEX Liquidity Monitor — 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.

[$0.20 USDC] Token Approval Manager — 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.

[$0.25 USDC] Token Price Feed — 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.

[$0.25 USDC] Token Sentiment Analyzer — 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.

[$0.35 USDC] Whale Wallet Alerts — 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.

[$0.40 USDC] Batch Quote Service — 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.

[$0.50 USDC] Multi-Chain Balance Checker — 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.

[$0.50 USDC] Trending Tokens Feed — 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.

[$0.50 USDC] Portfolio Tracker — 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.

[$0.50 USDC] Wallet Risk Analyzer — 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.

[$0.05 USDC] NASA Fire Alerts — 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.

[$0.05 USDC] Weather Satellite Imagery — High-resolution weather satellite imagery from NASA GIBS: GOES, MODIS, and Suomi-NPP. Input: bounding box, date, and imagery type (IR/visible/water vapor).

[$0.05 USDC] Air Quality (Sentinel-5P) — Atmospheric pollutant concentrations (NO2, SO2, CO, O3, aerosols) from ESA Sentinel-5P TROPOMI satellite for any global coordinate or bounding box.

[$0.10 USDC] Vegetation Health (NDVI) — 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.

[$0.10 USDC] Flood Detection — 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.

[$0.15 USDC] Land Use Classification — 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.

[$0.25 USDC] NASA Earthdata Gateway — 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.

[$0.25 USDC] NASA Earthdata Granule Search — Search 1B+ NASA satellite granules by bounding box, date range, and collection (Landsat/Sentinel/MODIS/VIIRS). Returns download URLs and granule metadata.

[$0.25 USDC] NASA Precipitation Data — Real-time observed rain rate at any global coordinate from NASA IMERG. Input: latitude, longitude, and date.

[$0.25 USDC] NASA Sea Surface Temperature — Sea surface temperature at any ocean coordinate from NASA MUR-JPL multi-scale analysis. Sub-meter spatial accuracy. Input: lat/lon and date.

[$0.25 USDC] NASA Soil Moisture — Soil moisture granule discovery from NASA SMAP SPL3SMP at 36km resolution. Returns nearest granule, volumetric water content estimate, and quality flag.

[$0.25 USDC] NASA Ocean Color — MODIS Aqua ocean chlorophyll-a concentration via NASA CMR at 4km resolution. Input: coordinates or bounding box and date range.

[$0.05 USDC] B20 Token Info — 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.

[$0.10 USDC] B20 Transfer Check — 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.

[$0.25 USDC] B20 Compliance Scan — 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).

[free] vltUSDC Vault Deposit Calldata — 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.

[free] vltUSDC Vault Withdraw Calldata — 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.

[free] vltUSDC Vault USDC-Only Exit Calldata — 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.

[$0.05 USDC] VLT + vltUSDC Vault Stats — 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.

[$0.25 USDC] Polymarket Events — Trending Polymarket prediction market events with current yes/no prices, volume, and liquidity across politics, crypto, sports, and science.

[$0.25 USDC] Polymarket Search — Search Polymarket prediction markets by keyword or topic. Returns matching events with current prices, volume, and market close date.

[$0.25 USDC] Kalshi Markets — Active markets from Kalshi, a CFTC-regulated prediction exchange. Returns yes/no ask prices, volume, and open interest. Filter by category or keyword.

[$0.25 USDC] Kalshi Search — Search Kalshi prediction markets by keyword or event type. Returns matching CFTC-regulated markets with current yes prices, volume, and expiration dates.

[$0.25 USDC] Prediction Market Cross-Platform Spread — 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.

[$0.50 USDC] Polymarket Odds — Current odds and price history for a specific Polymarket event. Returns yes/no bid/ask, 24h volume, and last trade timestamp.

[$0.50 USDC] Prediction Market Odds — Aggregated prediction market odds from Polymarket and Kalshi for any topic. Returns consensus probability with per-platform breakdown and total volume.

[$0.50 USDC] Kalshi Odds — 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.

[$0.30 USDC] Transaction Builder — Encode and prepare any EVM transaction: ABI encoding, calldata construction, gas estimation, and nonce lookup for Ethereum, Base, Arbitrum, and Optimism.

[$0.50 USDC] Payment Processing — Process USDC payments across EVM chains with automatic routing and fee optimization. Returns transaction receipt, confirmed amount, and destination chain confirmation.

[$1.00 USDC] Contract Security Scanner — 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.

[$1.00 USDC] Instant Agent Wallet — 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.

[$2.00 USDC] Agent Wallet Provisioning (CDP) — Create a persistent Coinbase Developer Platform (CDP) managed wallet for AI agents on Base mainnet. Returns wallet address and API credentials for long-running autonomous deployments.

[$2.00 USDC] Seamless Chain Bridge — Cross-chain bridge calldata via Across Protocol for Ethereum, Base, Arbitrum, Optimism, and Polygon. Returns unsigned bridge transaction with fee breakdown, estimated settlement time, and minimum received.

[$0.40 USDC] Stock Sentiment Analysis — 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.

[$0.40 USDC] Forex Sentiment Analysis — 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.

[$0.50 USDC] Market Sentiment Analysis — 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.

[$0.75 USDC] AI Trade Signals — AI crypto trading signals with entry price, stop-loss, take-profit, position size recommendation, and risk/reward ratio. Based on technical indicators and on-chain flow analysis.

[$1.00 USDC] Trading Signal Generator — 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.

[$2.00 USDC] Portfolio Optimization — AI crypto portfolio rebalancing using Modern Portfolio Theory. Input current holdings and risk tolerance; returns target allocation with projected Sharpe ratio and expected return improvement.

[$0.75 USDC] Correlation Matrix — 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.

[$1.00 USDC] Risk Metrics Calculator — 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.

[$1.25 USDC] Arbitrage Scanner — Scan for real-time arbitrage opportunities across Uniswap, Curve, and Balancer. Returns path, estimated gross profit, gas cost, and net yield per opportunity.

[$0.05 USDC] Robinhood Chain Stock Price Feed — 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.

[$0.60 USDC] Robinhood Chain Token Price — 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.

[$0.75 USDC] Robinhood Chain Health Stats — Chain-level health metrics for Robinhood Chain (eip155:4663): current block height, gas price, validator count, and network TPS via Chainlink on-chain reads.

[$0.75 USDC] Robinhood Chain Bootstrap Bridge — 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.

[$1.25 USDC] Robinhood Chain DEX Pools — 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.

[$0.25 USDC] Tokenized Treasury Yield Comparison — 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.

[$0.50 USDC] RWA Synthetic NAV Oracle — Synthetic market-based NAV estimate for RWA tokens (real estate, private credit, tokenized treasuries). Returns current NAV per share, implied yield, and protocol metadata.

[$0.75 USDC] Property Valuation — AI-powered real estate property valuation using comparable sales, zoning data, and market trends. Returns estimated value range with confidence interval and key value drivers.

[$1.00 USDC] Lease Analysis — Commercial lease terms extraction and risk analysis. Returns key clauses (rent escalation, break options, TI allowance), market rate comparison, and red-flag summary.

[$1.50 USDC] Construction Progress Tracker — Construction site progress assessment using multi-source satellite imagery and AI analysis. Input site coordinates and date range; returns phase classification and change detection report.

[$0.75 USDC] Fraud Detection — AI fraud risk score for an on-chain transaction or wallet: phishing wallet proximity, mixer involvement, rug-pull exposure, and behavioral anomaly detection. Returns risk tier with evidence.

[$1.25 USDC] Credit Risk Score — On-chain credit risk score (0-1000) for an EVM wallet: DeFi liquidation history, loan repayment behavior, protocol interactions, and net position health.

[$1.75 USDC] Compliance Check — AML/KYC risk assessment for any EVM wallet: OFAC/EU/UN sanctions screening, mixer exposure, darknet market links, and a structured compliance verdict with supporting evidence.

[$1.00 USDC] Instant API Key — Frictionless API key provisioning via USDC payment. Pay once, receive a prepaid credits key instantly — no sign-up, no OAuth, no waitlist. Works across all 80 x402 services.

[$5.00 USDC] Verified Agent Identity — Create a verified on-chain identity for an AI agent per ERC-8004. Registers agent metadata, capabilities, and controller address to the IdentityRegistry on Base mainnet.

[$5.00 USDC] Compliance Consultation — AI regulatory analysis for DeFi protocols, token launches, and on-chain operations. Returns jurisdiction-specific risk assessment, applicable regulations, and concrete remediation steps.

[$10.00 USDC] Smart Contract Audit — 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.