# Morgan Stanley API Platform (WebSocket Streaming)

**Canonical:** https://apis.io/apis/morgan-stanley/api-platform-websocket/  
**Provider:** Morgan Stanley — https://apis.io/providers/morgan-stanley/  
**Documentation:** https://developer.morganstanley.com/

Morgan Stanley API Platform (WebSocket Streaming) is one of 6 APIs that [Morgan Stanley](https://apis.io/providers/morgan-stanley/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Financial, Institutional, WebSocket, Streaming, and Authentication. The published artifact set on APIs.io includes API documentation.

Alongside its REST APIs, the Morgan Stanley API Platform exposes streaming WebSocket APIs for onboarded institutional clients who need low-latency, event-driven data feeds rather than request/response polling. The public morganstanley/api GitHub repository ships Java and Python starter projects specifically for the WebSocket APIs, connecting over a wss:// endpoint using the same security model as the REST APIs: OAuth 2.0 access tokens obtained from Microsoft Entra / Azure AD via certificate-based confidential-client authentication (client id, scopes, certificate thumbprint, and private key). As with the REST surface, the specific endpoints, scopes, and message schemas are provisioned per client during onboarding and are not published publicly; access requires contacting a Morgan Stanley representative.

## Machine-readable artifacts (3)

- **Documentation** — https://developer.morganstanley.com/
- **DeveloperPortal** — https://developer.morganstanley.com/
- **SampleCode** — https://github.com/morganstanley/api

## Other Morgan Stanley APIs (5)

- [Morgan Stanley API Platform (REST)](https://apis.io/apis/morgan-stanley/api-platform-rest/)
- [E*TRADE from Morgan Stanley - Accounts API](https://apis.io/apis/morgan-stanley/etrade-accounts/)
- [E*TRADE from Morgan Stanley - Market Data API](https://apis.io/apis/morgan-stanley/etrade-market-data/)
- [E*TRADE from Morgan Stanley - Order API](https://apis.io/apis/morgan-stanley/etrade-orders/)
- [E*TRADE from Morgan Stanley - Alerts API](https://apis.io/apis/morgan-stanley/etrade-alerts/)

## Tags

Financial, Institutional, WebSocket, Streaming, Authentication, United States

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/morgan-stanley/api-platform-websocket/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/morgan-stanley/.