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TradeStation Streaming API

The TradeStation Streaming API provides real-time HTTP streaming endpoints using chunked transfer encoding with newline-delimited JSON for market data and brokerage events. Streams deliver live quote updates, bar chart data, and order status changes with minimal latency.

TradeStation Streaming API is one of 6 APIs that TradeStation publishes on the APIs.io network, described by an AsyncAPI event-driven specification.

Tagged areas include Bar Charts, Cryptocurrency, Market Data, Options, and Order Status. The published artifact set on APIs.io includes API documentation and an AsyncAPI specification.

This event API exposes 9 operations across 9 channels, and defines 17 schemas. It is described by AsyncAPI 2.6.0, at version 3.0.

The API connects through 2 servers: https://api.tradestation.com (https), https://sim-api.tradestation.com (https).

9 operations 9 channels 17 schemas

Metadata

The identity and technical contract details declared by the specification.

Specification
AsyncAPI 2.6.0
API Version
3.0
Base URL
https://api.tradestation.com
Resource Areas
1

Channels & Operations 9

Across 9 channels, the API surfaces 9 operations. Each is listed below with its action, channel, parameters, and response codes.

Channels 9
PUB
/v3/marketdata/stream/quotes/{symbols}
Stream quote changes
streamQuotes 1 param body
PUB
/v3/marketdata/stream/barcharts/{symbol}
Stream bar chart data
streamBars 1 param body
PUB
/v3/marketdata/stream/options/chains/{underlying}
Stream option chain
streamOptionChain 1 param body
PUB
/v3/marketdata/stream/options/quotes
Stream option quotes
streamOptionQuotes body
PUB
/v3/marketdata/stream/marketdepth/aggregates/{symbol}
Stream market depth aggregates
streamMarketDepthAggregates 1 param body
PUB
/v3/brokerage/stream/accounts/{accountIds}/orders
Stream order updates
streamOrders 1 param body
PUB
/v3/brokerage/stream/accounts/{accountIds}/orders/{orderIds}
Stream specific order updates
streamOrdersByIds 2 params body
PUB
/v3/brokerage/stream/accounts/{accountIds}/positions
Stream position updates
streamPositions 1 param body
PUB
/v3/brokerage/stream/accounts/{accountId}/wallets
Stream wallet updates
streamWallets 1 param body

Messages & Schemas 17

The contract defines 17 schemas that model the data carried by its messages. The most detailed are OptionChainStreamData (16 properties), QuoteStreamData (15 properties), OrderStreamData (13 properties), BarStreamData (11 properties). Each schema is shown below with its type and property counts.

QuoteUpdate
message
A real-time quote update for a symbol with changed fields.
BarUpdate
message
A real-time bar chart update with OHLC data.
OptionChainUpdate
message
A real-time option chain update for an underlying symbol.
OptionQuoteUpdate
message
A real-time quote update for specific option contracts.
MarketDepthUpdate
message
A real-time aggregated market depth update showing order book bid and ask levels.
OrderUpdate
message
A real-time order status update for a brokerage account.
PositionUpdate
message
A real-time position update for a brokerage account.
WalletUpdate
message
A real-time cryptocurrency wallet update.
QuoteStreamData
object
Streaming quote data with fields that have changed since the last update.
15 properties
BarStreamData
object
Streaming bar chart data with OHLC values.
11 properties
OptionChainStreamData
object
Streaming option chain data for an underlying symbol.
16 properties
OptionQuoteStreamData
object
Streaming quote data for a specific option contract.
11 properties
MarketDepthStreamData
object
Streaming aggregated market depth data showing bid and ask levels in the order book.
4 properties
DepthLevel
object
A single price level in the market depth order book.
3 properties
OrderStreamData
object
Streaming order status update data.
13 properties
PositionStreamData
object
Streaming position update data.
10 properties
WalletStreamData
object
Streaming cryptocurrency wallet update data.
4 properties

Specification

The full machine-readable AsyncAPI contract behind this narrative.

Source

tradestation-streaming-asyncapi.yml Raw ↑

Other APIs TradeStation publishes across the network.

TradeStation Accounts API
TradeStation Market Data API
TradeStation Options API
TradeStation Order Execution API
TradeStation Reference Data API
Where this information came from

This is an independent, third-party profile of TradeStation Streaming API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

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