Coin Railz IoT & DePIN API

openapi: 3.2.0
info:
  title: Coin Railz Agent Payment IoT & DePIN API
  version: 3.0.0
  description: Production-grade x402 micropayment infrastructure for AI agents.
  contact:
    email: support@coinrailz.com
    url: https://coinrailz.com
  x-guidance: 'Use Coin Railz when an agent needs paid, structured financial or operational data without creating an account or API key. Choose the operation by its summary, description, tags, input schema, and x-price-usd. Useful starting points include first-call for a low-cost payment test; token-metadata, gas-price-oracle, wallet-risk, approval-manager, and transaction-builder for transaction preparation; compliance-check for informational risk screening; prediction-market-odds for market research; and solana-yield-finder for yield discovery.


    For a paid call, send the exact documented HTTP method, URL, content type, and JSON body without a payment header. The service returns HTTP 402 with x402Version 2 and an accepts array. Select one complete offer your wallet supports. Circle Agent Wallet and Gateway clients should prefer the eip155:5042 Arc Mainnet offer when available; Base clients can select eip155:8453. Preserve the selected offer exactly, including scheme, network, asset, amount, payTo, facilitator, resource, and any extra metadata. Sign that authorization with an x402 v2-compatible client, then retry the identical request with PAYMENT-SIGNATURE. X-PAYMENT remains available for compatible legacy clients. Do not send a standalone token transfer or construct a transaction-hash wrapper from this guidance.


    Validate required fields and constraints from each operation''s request schema before authorizing payment. Treat risk, compliance, market, yield, and investment outputs as informational analysis rather than legal, banking, or investment advice. Prices are per call and the live 402 challenge is authoritative. Responses are JSON unless the operation states otherwise.'
  x-payment-info:
    protocol: x402
    x402Version: 2
    network: eip155:8453
    asset: USDC
    assetAddress: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
    recipientWallet: '0xa4bbe37f9a6ae2dc36a607b91eb148c0ae163c91'
    facilitator: https://api.cdp.coinbase.com/platform/v2/x402
    supportedNetworks:
    - network: eip155:8453
      asset: USDC
      assetAddress: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
      facilitator: https://api.cdp.coinbase.com/platform/v2/x402
    - network: eip155:5042
      asset: USDC
      assetAddress: '0x3600000000000000000000000000000000000000'
      gatewayVerifier: '0x77777777Dcc4d5A8B6E418Fd04D8997ef11000eE'
      facilitator: https://gateway-api.circle.com
  x-payment-manifest: https://coinrailz.com/x402/payment-manifest.json
servers:
- url: https://coinrailz.com
  description: Current environment
- url: https://coinrailz.com
  description: Production
security:
- apiKey: []
tags:
- name: IoT & DePIN
  description: IoT device data and fleet telematics
paths:
  /x402/fleet-telematics:
    post:
      tags:
      - IoT & DePIN
      summary: 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.'
      x-price-usd: 0.1
      x-featured: true
      operationId: fleetTelematics
      requestBody:
        content:
          application/json:
            schema:
              type: object
              properties:
                deviceId:
                  type: string
                fleetId:
                  type: string
                metrics:
                  type: array
                  items:
                    type: string
      responses:
        '200':
          description: Fleet telemetry data
        '402':
          description: Payment Required
  /x402/weather-station-data:
    post:
      tags:
      - IoT & DePIN
      summary: Weather Station Data
      description: 'Hyperlocal weather data from IoT weather stations: temperature, humidity, pressure, wind speed/direction, and precipitation. Input: coordinates or station ID.'
      x-price-usd: 0.05
      operationId: weatherStationData
      requestBody:
        content:
          application/json:
            schema:
              type: object
              properties:
                stationId:
                  type: string
                lat:
                  type: number
                lon:
                  type: number
                radius_km:
                  type: number
      responses:
        '200':
          description: Hyperlocal weather measurements
        '402':
          description: Payment Required
      x-featured: false
  /x402/iot-sensor-reading:
    post:
      tags:
      - IoT & DePIN
      summary: 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.'
      x-price-usd: 0.025
      operationId: iotSensorReading
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - deviceId
              properties:
                deviceId:
                  type: string
                sensorType:
                  type: string
      responses:
        '200':
          description: Current sensor reading with timestamp
        '402':
          description: Payment Required
      x-featured: true
  /x402/iot-device-stream:
    post:
      tags:
      - IoT & DePIN
      summary: 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.'
      x-price-usd: 0.25
      operationId: iotDeviceStream
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - deviceId
              properties:
                deviceId:
                  type: string
                duration_seconds:
                  type: integer
                  default: 60
      responses:
        '200':
          description: Real-time device stream data
        '402':
          description: Payment Required
      x-featured: false
  /x402/iot-bulk-data:
    post:
      tags:
      - IoT & DePIN
      summary: IoT Bulk Data Export
      description: '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.'
      x-price-usd: 0.5
      operationId: iotBulkData
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - deviceId
              properties:
                deviceId:
                  type: string
                startDate:
                  type: string
                endDate:
                  type: string
                format:
                  type: string
                  enum:
                  - json
                  - csv
                  default: json
      responses:
        '200':
          description: Historical sensor data export
        '402':
          description: Payment Required
      x-featured: false
components:
  securitySchemes:
    apiKey:
      type: apiKey
      in: header
      name: X-API-KEY
      description: Prepaid credits API key (cr_live_...). Obtain via GET /api/m2m/credits/trial (free $5) or POST /api/m2m/credits/checkout/session (paid).
    bearerApiKey:
      type: http
      scheme: bearer
      description: 'Same cr_live_ key as X-API-KEY, passed as Authorization: Bearer <key>.'
    x402:
      type: apiKey
      in: header
      name: X-PAYMENT
      description: x402 protocol on-chain USDC payment. Base64url-encoded signed payment payload. See /.well-known/x402.json for facilitator details.
    mpp:
      type: http
      scheme: payment
      description: 'MPP (Machine Payments Protocol) credential. Authorization: Payment <base64-credential>. See /.well-known/mpp.json.'
externalDocs:
  description: Full x402 service catalog
  url: https://coinrailz.com/x402/catalog