VoltTime Cloud API Client

Node.js client library for the VoltTime Cloud API.

Installation

npm install
npm run build

Usage

Initialize the client

import { VoltTimeClient } from './dist/index.js';

const client = new VoltTimeClient({
  apiKey: 'your-api-key-here'
});

User Endpoints

Get current user details

const user = await client.getCurrentUser();
console.log(user);

Get user by ID

const user = await client.getUserDetails('user-id');
console.log(user);

Site Endpoints

List all sites

const sites = await client.getSites({
  page: 1,
  per_page: 20
});

console.log(sites.data);
console.log(`Total: ${sites.meta.per_page}`);

Get specific site

const site = await client.getSite('site-uuid');
console.log(site);

Charger Endpoints

List all chargers

const chargers = await client.getChargers({
  page: 1,
  per_page: 20
});

console.log(chargers.data);

Get specific charger

const charger = await client.getCharger('charger-uuid');
console.log(charger);

Transaction Endpoints

Get transactions for a site

const transactions = await client.getTransactionsBySite(
  'site-uuid',
  {
    page: 1,
    per_page: 50
  }
);

console.log(transactions.data);

Get all transactions (auto-pagination)

// Automatically fetch all pages
const allTransactions = await client.getAllTransactionsBySite('site-uuid');

console.log(`Total transactions: ${allTransactions.length}`);

const totalKwh = allTransactions.reduce(
  (sum, tx) => sum + parseFloat(tx.total_kwh),
  0
);
console.log(`Total energy: ${totalKwh.toFixed(2)} kWh`);

Tariff Endpoints

Get electricity tariffs

const tariffs = await client.getTariffs('BE'); // Location code
console.log(`Found ${tariffs.length} tariffs`);

tariffs.forEach((tariff) => {
  console.log(`${tariff.timestamp}: €${tariff.price} (${tariff.type})`);
});

Provider Endpoints

Get all OCPP providers

const providers = await client.getProviders();
console.log(`Found ${providers.length} providers`);

providers.forEach((provider) => {
  console.log(`${provider.name}: ${provider.websocket_url}`);
});

Product Endpoints

Get all products

const products = await client.getProducts();
console.log(`Found ${products.length} products`);

products.forEach((product) => {
  console.log(`${product.name} (${product.sku}): €${product.price}`);
});

Connector Endpoints

Get current power usage

const powerUsage = await client.getConnectorPowerUsage(
  'charger-uuid',
  1 // connector ID
);

console.log(`Power: ${powerUsage.kW} kW`);
console.log(`L1: ${powerUsage.L1} A`);
console.log(`L2: ${powerUsage.L2} A`);
console.log(`L3: ${powerUsage.L3} A`);

Get latest meter values

const meterValue = await client.getConnectorLatestMeterValue(
  'charger-uuid',
  1 // connector ID
);

console.log(`Connector ID: ${meterValue.connectorId}`);
const latest = meterValue.meterValue[0];
console.log(`Timestamp: ${latest.timestamp}`);

latest.sampledValue.forEach((sv) => {
  console.log(`${sv.measurand}: ${sv.value} ${sv.unit || ''}`);
});

Legacy Aliases

For backward compatibility, these aliases are available:

// Same as getChargers()
const chargePoints = await client.getChargePoints();

// Same as getCharger()
const chargePoint = await client.getChargePoint('charger-uuid');

Error Handling

import { VoltTimeAPIError } from './dist/index.js';

try {
  const user = await client.getCurrentUser();
} catch (error) {
  if (error instanceof VoltTimeAPIError) {
    console.error(`API Error: ${error.message}`);
    console.error(`Status Code: ${error.statusCode}`);
    console.error(`Response:`, error.responseData);
  } else {
    console.error('Unexpected error:', error);
  }
}

Environment Variables

Create a .env file for your API key:

VOLTTIME_API_KEY=your-api-key-here

Then run:

node dist/example.js

API Reference

VoltTimeClient

Constructor

new VoltTimeClient(config: VoltTimeConfig)

• config.apiKey (required): Your VoltTime API key
• config.baseUrl (optional): Custom API base URL (defaults to https://app.plugchoice.com/api/v3)

Methods

User

• getCurrentUser(): Promise<User>
• getUserDetails(userId: string): Promise<User>

Sites

• getSites(params?: PaginationParams): Promise<PaginatedResponse<Site>>
• getSite(siteUuid: string): Promise<Site>

Chargers

• getChargers(params?: PaginationParams): Promise<PaginatedResponse<Charger>>
• getCharger(chargerUuid: string): Promise<Charger>

Transactions

• getTransactionsBySite(siteUuid: string, params?: TransactionParams): Promise<PaginatedResponse<Transaction>>
• getAllTransactionsBySite(siteUuid: string, params?: TransactionParams): Promise<Transaction[]>

Tariffs

• getTariffs(location: string): Promise<Tariff[]>

Providers

• getProviders(): Promise<Provider[]>

Products

• getProducts(): Promise<Product[]>

Connectors

• getConnectorPowerUsage(chargerUuid: string, connectorId: number): Promise<ConnectorPowerUsage>
• getConnectorLatestMeterValue(chargerUuid: string, connectorId: number): Promise<ConnectorMeterValue>

Legacy Aliases

• getChargePoints(params?: PaginationParams): Promise<PaginatedResponse<ChargePoint>>
• getChargePoint(chargePointId: string): Promise<ChargePoint>

Types

See src/types.ts for full type definitions including:

• User, Site, Charger, Transaction
• Tariff, Provider, Product
• ConnectorPowerUsage, ConnectorMeterValue, SampledValue, MeterValue
• PaginatedResponse<T>, PaginationParams, TransactionParams

Example

See example.ts for a complete working example demonstrating all endpoints.

License

MIT