generated: '2026-09-19'
method: probed
status: published
source: https://coinrailz.com/mcp (JSON-RPC tools/list, unauthenticated, HTTP 200) + https://coinrailz.com/.well-known/mcp.json
  + https://github.com/tdnupe3/mcp-server-coinrailz
description: 'Coin Railz operates a remote MCP server on its primary domain: POST https://coinrailz.com/mcp with
  {jsonrpc:2.0, method:tools/list} returned 80 tools with inputSchema and outputSchema, anonymously (GET /mcp answers
  405 ''MCP transport only supports POST requests at /mcp''). Discovery documents at /.well-known/mcp.json, /.well-known/mcp-server.json
  and /.well-known/server-card.json name a non-standard tools_list/tools_call REST pair as well. Tool CALLS are
  paid: each tool description carries its USDC price and calls need an X-API-KEY (cr_live_ prepaid credits, free
  $5 trial at GET /api/m2m/credits/trial) or an x402 X-PAYMENT header. A local stdio server also ships as the PyPI
  package coinrailz-mcp (python -m coinrailz_mcp, 63 tools, COINRAILZ_API_KEY env) from github.com/tdnupe3/mcp-server-coinrailz.
  The full tools/list response is saved verbatim in coinrailz-com-mcp-tools-list.json.'
server:
  name: Coin Railz MCP Server
  transport: http
  url: https://coinrailz.com/mcp
  protocol: JSON-RPC 2.0 over HTTP POST
  auth: none for tools/list; X-API-KEY or x402 X-PAYMENT for tools/call
  discovery:
  - https://coinrailz.com/.well-known/mcp.json
  - https://coinrailz.com/.well-known/mcp-server.json
  - https://coinrailz.com/.well-known/server-card.json
  rest_shim:
    tools_list: https://coinrailz.com/mcp/tools/list
    tools_call: https://coinrailz.com/mcp/tools/call
    services: https://coinrailz.com/mcp/services
local:
  name: coinrailz-mcp
  transport: stdio
  install: pip install coinrailz-mcp
  run: python -m coinrailz_mcp
  env:
  - COINRAILZ_API_KEY
  version: 1.2.0
  published: '2026-06-13'
  source: https://github.com/tdnupe3/mcp-server-coinrailz
  tools: 63
deployment:
  mode: both
  endpoint: https://coinrailz.com/mcp
  install: pip install coinrailz-mcp && python -m coinrailz_mcp
  package: https://pypi.org/project/coinrailz-mcp/
  auth: api-key
  verified: probed
  checked: '2026-09-19'
  note: tools/list answered anonymously with 80 tools; every tool call is metered (prepaid credits or x402 on-chain
    USDC), so auth is api-key for the callable surface.
tools:
- name: coinrailz_ping
  description: '[$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.'
- name: coinrailz_first_call
  description: '[$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 EV'
- name: coinrailz_iot_sensor_reading
  description: '[$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.'
- name: coinrailz_ai_inference
  description: '[$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.'
- name: coinrailz_gas_price_oracle
  description: '[$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.'
- name: coinrailz_weather_station_data
  description: '[$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.'
- name: coinrailz_fleet_telematics
  description: '[$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.'
- name: coinrailz_iot_device_stream
  description: '[$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.'
- name: coinrailz_iot_bulk_data
  description: '[$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.'
- name: coinrailz_solana_yield_finder
  description: '[$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.'
- name: coinrailz_token_metadata
  description: '[$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.'
- name: coinrailz_dex_liquidity
  description: '[$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.'
- name: coinrailz_approval_manager
  description: '[$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.'
- name: coinrailz_token_price
  description: '[$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.'
- name: coinrailz_token_sentiment
  description: '[$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.'
- name: coinrailz_whale_alerts
  description: '[$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.'
- name: coinrailz_batch_quote
  description: '[$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.'
- name: coinrailz_multi_chain_balance
  description: '[$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.'
- name: coinrailz_trending_tokens
  description: '[$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.'
- name: coinrailz_portfolio_tracker
  description: '[$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.'
- name: coinrailz_wallet_risk
  description: '[$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.'
- name: coinrailz_fire_alerts
  description: '[$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.'
- name: coinrailz_weather_imagery
  description: '[$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).'
- name: coinrailz_air_quality
  description: '[$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.'
- name: coinrailz_vegetation
  description: '[$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.'
- name: coinrailz_flood_detection
  description: '[$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.'
- name: coinrailz_land_use
  description: '[$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.'
- name: coinrailz_satellite_earthdata
  description: '[$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.'
- name: coinrailz_earthdata_granules
  description: '[$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.'
- name: coinrailz_earthdata_precipitation
  description: '[$0.25 USDC] NASA Precipitation Data — Real-time observed rain rate at any global coordinate from
    NASA IMERG. Input: latitude, longitude, and date.'
- name: coinrailz_earthdata_sst
  description: '[$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.'
- name: coinrailz_earthdata_soil_moisture
  description: '[$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.'
- name: coinrailz_earthdata_ocean_color
  description: '[$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.'
- name: coinrailz_b20_token_info
  description: '[$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.'
- name: coinrailz_b20_transfer_check
  description: '[$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.'
- name: coinrailz_b20_compliance_scan
  description: '[$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).'
- name: coinrailz_vlt_usdc_deposit
  description: '[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 Uni'
- name: coinrailz_vlt_usdc_withdraw
  description: '[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'
- name: coinrailz_vlt_usdc_zap_withdraw
  description: '[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) v2Rout'
- name: coinrailz_vlt_stats
  description: '[$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 a'
- name: coinrailz_polymarket_events
  description: '[$0.25 USDC] Polymarket Events — Trending Polymarket prediction market events with current yes/no
    prices, volume, and liquidity across politics, crypto, sports, and science.'
- name: coinrailz_polymarket_search
  description: '[$0.25 USDC] Polymarket Search — Search Polymarket prediction markets by keyword or topic. Returns
    matching events with current prices, volume, and market close date.'
- name: coinrailz_kalshi_markets
  description: '[$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.'
- name: coinrailz_kalshi_search
  description: '[$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.'
- name: coinrailz_prediction_market_spread
  description: '[$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.'
- name: coinrailz_polymarket_odds
  description: '[$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.'
- name: coinrailz_prediction_market_odds
  description: '[$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.'
- name: coinrailz_kalshi_odds
  description: '[$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.'
- name: coinrailz_transaction_builder
  description: '[$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.'
- name: coinrailz_payment_processing
  description: '[$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.'
- name: coinrailz_contract_scan
  description: '[$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.'
- name: coinrailz_instant_agent_wallet
  description: '[$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.'
- name: coinrailz_agent_create_wallet
  description: '[$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.'
- name: coinrailz_seamless_chain_bridge
  description: '[$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.'
- name: coinrailz_stock_sentiment
  description: '[$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.'
- name: coinrailz_forex_sentiment
  description: '[$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.'
- name: coinrailz_sentiment_analysis
  description: '[$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.'
- name: coinrailz_trade_signals
  description: '[$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.'
- name: coinrailz_trading_signal
  description: '[$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.'
- name: coinrailz_portfolio_optimization
  description: '[$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.'
- name: coinrailz_correlation_matrix
  description: '[$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.'
- name: coinrailz_risk_metrics
  description: '[$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.'
- name: coinrailz_arbitrage_scanner
  description: '[$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.'
- name: coinrailz_rh_stock_price
  description: '[$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.'
- name: coinrailz_robinhood_token_price
  description: '[$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.'
- name: coinrailz_robinhood_chain_stats
  description: '[$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.'
- name: coinrailz_rh_bridge_usdc
  description: '[$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 agen'
- name: coinrailz_robinhood_dex_pools
  description: '[$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.'
- name: coinrailz_tokenized_yield_compare
  description: '[$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.'
- name: coinrailz_rwa_nav_oracle
  description: '[$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.'
- name: coinrailz_property_valuation
  description: '[$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.'
- name: coinrailz_lease_analysis
  description: '[$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.'
- name: coinrailz_construction_progress
  description: '[$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.'
- name: coinrailz_instant_api_key
  description: '[$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 the canonical x402 service
    catalog.'
- name: coinrailz_verified_agent_identity
  description: '[$5.00 USDC] Agent Identity Ownership Check — 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 Id'
- name: coinrailz_compliance_consultation
  description: '[$5.00 USDC] Compliance Consultation — Informational technical regulatory-analysis output for DeFi
    protocols, token launches, and on-chain operations. It is not legal advice or a regulated compliance service.'
- name: coinrailz_smart_contract_audit
  description: '[$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.'
- name: coinrailz_fraud_detection
  description: '[$0.75 USDC] Fraud Detection — Informational technical fraud-risk output for an on-chain transaction
    or wallet. It is not banking, legal, or regulated advice.'
- name: coinrailz_credit_risk_score
  description: '[$1.25 USDC] Credit Risk Score — Informational technical on-chain risk score for an EVM wallet.
    It is not credit underwriting, lending, banking, or regulated advice.'
- name: coinrailz_compliance_check
  description: '[$1.75 USDC] Compliance Check — Informational technical wallet-risk output based on configured data
    sources. It is not legal advice, a banking service, or a regulated compliance determination.'
tools_file: coinrailz-com-mcp-tools-list.json