generated: '2026-07-22'
method: searched
source: npm registry + PyPI + github.com/barchart (Barchart, Inc., 173 public repos)
description: >-
  First-party client libraries published by Barchart, Inc. Barchart maintains
  official OnDemand REST clients for Python, JavaScript, Java, and PHP under
  its github.com/barchart organization, plus a family of @barchart-scoped npm
  SDKs for its streaming market data (WebSockets), alerting, portfolio, and
  watchlist services, and the Openfeed streaming SDK. The PyPI package
  `ondemand` is the official Python OnDemand client. Unofficial
  community packages (e.g. PyPI `barchart`) are listed with official: false.
packages:
- language: python
  registry: pypi
  name: ondemand
  url: https://pypi.org/project/ondemand/
  install: pip install ondemand
  official: true
  notes: Simple client for Barchart OnDemand REST APIs (github.com/barchart/barchart-ondemand-client-python).
- language: javascript
  registry: github
  name: barchart-ondemand-client-js
  url: https://github.com/barchart/barchart-ondemand-client-js
  official: true
  notes: A JavaScript client for Barchart OnDemand.
- language: java
  registry: github
  name: barchart-ondemand-client-java
  url: https://github.com/barchart/barchart-ondemand-client-java
  official: true
  notes: A Java client for Barchart OnDemand.
- language: php
  registry: github
  name: barchart-ondemand-client-php
  url: https://github.com/barchart/barchart-ondemand-client-php
  official: true
  notes: PHP client for Barchart OnDemand.
- language: javascript
  registry: npm
  name: "@barchart/marketdata-api-js"
  url: https://www.npmjs.com/package/@barchart/marketdata-api-js
  install: npm install @barchart/marketdata-api-js
  official: true
  notes: SDK for streaming market data from Barchart.com via WebSockets (v6.x).
- language: javascript
  registry: npm
  name: "@barchart/alerts-client-js"
  url: https://www.npmjs.com/package/@barchart/alerts-client-js
  install: npm install @barchart/alerts-client-js
  official: true
  notes: JavaScript SDK for the Barchart Alerting Service (github.com/barchart/alerting-service-public).
- language: javascript
  registry: npm
  name: "@barchart/portfolio-client-js"
  url: https://www.npmjs.com/package/@barchart/portfolio-client-js
  install: npm install @barchart/portfolio-client-js
  official: true
  notes: JavaScript SDK for the Barchart Portfolio Service.
- language: javascript
  registry: npm
  name: "@barchart/watchlist-client-js"
  url: https://www.npmjs.com/package/@barchart/watchlist-client-js
  install: npm install @barchart/watchlist-client-js
  official: true
  notes: JavaScript SDK for Barchart's Watchlist Service (github.com/barchart/watchlist-client-js).
- language: javascript
  registry: npm
  name: "@openfeed/sdk-js"
  url: https://www.npmjs.com/package/@openfeed/sdk-js
  install: npm install @openfeed/sdk-js
  official: true
  notes: JavaScript SDK for Barchart Openfeed streaming (protobuf-based; see grpc/).
- language: javascript
  registry: npm
  name: "@barchart/chart-lib"
  url: https://www.npmjs.com/package/@barchart/chart-lib
  install: npm install @barchart/chart-lib
  official: true
  notes: Barchart HTML5 Streaming Chart component (docs at docs.barchart.com/chart; see components/).
- language: python
  registry: pypi
  name: barchart
  url: https://pypi.org/project/barchart/
  install: pip install barchart
  official: false
  notes: Community package - "The Unofficial API for barchart.com" (not published by Barchart, Inc.).