Node.js SDK

The Node.js SDK spice.js is the easiest way to use and query Spice.ai with Node.js.

It uses Apache Arrow Flight to efficiently stream data to the client and Apache Arrow Records as data frames which are then easily converted to JavaScript objects/arrays or JSON.

Requirements

• Node.js 20+

Installation

npm install @spiceai/spice@latest --save

yarn add @spiceai/spice

Usage

Import SpiceClient and instantiate a new instance with your configuration.

You can then submit queries using the sql method.

import { SpiceClient } from "@spiceai/spice";

const spiceClient = new SpiceClient({
  apiKey: 'API_KEY',
  httpUrl: 'https://data.spiceai.io',
  flightUrl: 'flight.spiceai.io:443',
});
const table = await spiceClient.sql('SHOW TABLES;');
console.table(table.toArray());

Or using the shorthand with just an API key:

const spiceClient = new SpiceClient('API_KEY');

SpiceClient accepts a config object or a string API key:

• apiKey (string, optional): API key to authenticate with the endpoint.
• flightUrl (string, optional): Host and port of the Flight endpoint, without a scheme (default: 127.0.0.1:50051).
• httpUrl (string, optional): URL of the HTTP endpoint, including the scheme (default: http://127.0.0.1:8090).
• flightTlsEnabled (boolean, optional): Use TLS for Flight. Defaults to false for a localhost address and true otherwise.
• userAgent (string, optional): Prepended to the reported user agent.
• customHeaders (object, optional): Additional headers to send with each request.
• flightOnly (boolean, optional): Use only the Flight transport (default: false).
• httpOnly (boolean, optional): Use only the HTTP transport (default: false). Setting both flightOnly and httpOnly throws.
• logging (boolean, optional): Enable or disable logging output (default: true).

sqlJson(query: string) - Execute SQL queries with JSON results

The sqlJson() method executes SQL queries and returns results in a JSON format with schema information.

const result = await spiceClient.sqlJson('SELECT name, age FROM users LIMIT 5');

console.log(`Returned ${result.row_count} rows`);
console.log('Schema:', result.schema);
console.log('Data:', result.data);
console.log(`Query took ${result.execution_time_ms}ms`);

// Access individual rows
result.data.forEach((row) => {
  console.log(`${row.name} is ${row.age} years old`);
});

The response includes:

• row_count: Number of rows returned
• schema: Schema information with field names and types
• data: Array of row objects
• execution_time_ms: Query execution time in milliseconds

Other methods

• nsql(query, options?) — generate and run SQL from a natural language question. See the Text-to-SQL API.
• search(query, options?) — run a search query against the project's datasets.
• refreshAcceleration(dataset, options?) — trigger a refresh of an accelerated dataset.
• isSpiceReady() and isSpiceHealthy() — check the runtime's readiness and health.

See the API reference for full signatures.

Usage with local Spice runtime

Follow the quickstart guide to install and run spice locally.

import { SpiceClient } from '@spiceai/spice';

const main = async () => {
  // uses connection to local runtime by default
  const spiceClient = new SpiceClient();

  // or use custom connection params:
  // const spiceClient = new SpiceClient({
  //   httpUrl: 'http://my_spice_http_host',
  //   flightUrl: 'my_spice_flight_host',
  // });

  const table = await spiceClient.sql(
    'SELECT trip_distance, total_amount FROM taxi_trips ORDER BY trip_distance DESC LIMIT 10;'
  );
  console.table(table.toArray());
};

main();

Check Spice OSS documentation to learn more.

Connection retry

From version 1.0.1 the SpiceClient implements connection retry mechanism (3 attempts by default). The number of attempts can be configured via setMaxRetries:

const spiceClient = new SpiceClient('API_KEY');
spiceClient.setMaxRetries(5); // Setting to 0 will disable retries

Retries are performed for connection and system internal errors. It is the SDK user's responsibility to properly handle other errors, for example RESOURCE_EXHAUSTED (HTTP 429).

Contributing

Contribute to or file an issue with the spice.js library at: https://github.com/spiceai/spice.js.