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Please be aware that IBKR’s unified Web API documentation and reference materials are in beta and subject to change. The existing documentation for the Client Portal Web API, Digital Account Management, and the Flex Web Service will remain available at the following locations:




Introduction

Interactive Brokers is merging our web-based API products into a single, comprehensive IBKR Web API, bringing the features of the Client Portal Web API, Digital Account Management, and the Flex Web Service together in a unified interface, accessible by a shared means of authorization and authentication: OAuth 2.0.

Existing endpoints and authentication schemes are not deprecated and will continue to receive features and updates. Rather, we look forward to providing our clients with a new, coordinated set of endpoints exposing the same backend resources. To support this orchestration, the documentation below addresses the functionality of the Client Portal Web API, Digital Account Management, and the Flex Web Service side by side under the Web API umbrella.

Additionally, we have reorganized our development resources into two sections:

  • Documentation: Long-form, located on this page
  • Reference (Beta):  API definition, presented in a Swagger interface, with
    Currently includes sample requests and responses for Trading, Market Data, Alerts/FYIs, and Portfolio endpoints. Account Creation, Account Management, Funding, and Statements coming soon.
Web API Reference

Getting Started

Clients with fully open and funded accounts may use our Web API to interact with their accounts immediately, without any onboarding or approval process.
However, our Web API offers several methods of authentication, some of which do require approval or configuration prior to use.
Additionally, certain sets of features of the Web API, such as Account Registration and Funds and Banking, are not available to all account types and also require configuration by our Sales Engineering team prior to use.

Web API Access for Individuals

Web API usage for individual clients involves an IBKR username and password.
Whether accessing a live account or its associated simulated paper account, the live account must be fully open and funded.
The live account must also be of the “IBKR Pro” type.

If you do not already have an account, you can create one for free.

Open an Account

Market Data

In order to retrieve top-of-book, depth-of-book, or historical market data from the Web API, the following must be available:

  • Username with relevant live market data subscriptions and permission to trade the desired instruments
  • Authorized Web API session
  • Brokerage session (access to IServer endpoints)

Top-of-Book Snapshots

Top-of-book snapshots deliver up-to-date market data values sourced from the same streams as are displayed in Trader Workstation’s watchlists.

Values needed:

  • Contract ID (“conid”) for the desired instrument(s)
  • Tag identifiers for the desired data points (“fields”)

A GET request to the /iserver/marketdata/snapshot [ref↗] endpoint is used to retrieve a snapshot of top-of-book market data for one or more instruments.

This endpoint takes two required query parameters:

  • conids: A comma-separated list of instrument conids
  • fields: A comma-separated list of field tags. A comprehensive list of available tags can be found in our Reference material.

In order for the desired data to be available for snapshotting on request, a “pre-flight” request must be made to IServer to begin its consumption of the instrument’s live data stream.
This initial request will not deliver any data, but rather makes the stream available for future snapshot requests.
Snapshot market data is not cached and is extracted directly from these open streams.

This pre-flight request should include in its fields parameter all of the tags desired in the future:

GET https://api.ibkr.com/v1/api/iserver/marketdata/snapshot?conids=265598,8314&fields=31,7059,84,88,86,85

If this is the first time you’ve made a /iserver/marketdata/snapshot request for conids 265598 and 8314, you will not receive data in response. Instead you’ll see the requested conids returned, indicating that IServer is now streaming data for these instruments.

[{"conid": 265598, "conidEx": "265598"}, {'conid': 8314, 'conidEx': '8314'}]

Once a pre-flight request has been made for a given conid, all requested fields will be delivered with all future responses; future snapshot requests do not need to repeat the desired fields:

GET https://api.ibkr.com/v1/api/iserver/marketdata/snapshot?conids=265598,8314

Returns:

[{"31": "168.42",
  "6119": "q1",
  "6509": "RpB",
  "7059": "100",
  "84": "168.41",
  "85": "600",
  "86": "168.42",
  "88": "1,300",
  "_updated": 1712596911593,
  "conid": 265598,
  "conidEx": "265598",
  "server_id": "q1"},
 {"31": "189.60",
  "6119": "q2",
  "6509": "RpB",
  "7059": "100",
  "84": "189.56",
  "85": "500",
  "86": "189.61",
  "88": "200",
  "_updated": 1712596911593,
  "conid": 8314,
  "conidEx": "8314",
  "server_id": "q2"}]

Certain fields that update less frequently, particularly those that are computed on an interval, maybe not be delivered immediately, and instead will be returned when updated.

Streaming Top-of-Book Data

To open a stream for live, top-of-book market data for an instrument, we write the following message to the websocket:

smd+conid+{"fields":["field_1","field_2","field_n","field_n+1"]}

The values in the fields array are the same field tags used in the HTTP request to /iserver/marketdata/snapshot.
These field tag values must be passed as JSON strings, wrapped in double-quotes.

If successful, we will begin to receive response messages on websocket in the following format:

{
  "server_id":"server_id",
  "conidEx":"conidEx",
  "conid":conid,
  "_updated":_updated,
  "6119":"serverId",
  "field_1":field_1,
  "field_2":field_2,
  "field_n":field_n, 
  "field_n+1":field_n+1,
  "6509":"RB",
  "topic":"smd+conid"
}

We may cancel a top-of-book stream on the websocket by sending:

umd+conId+{}

Trading

All trading functionality described below assumes the following are available:

  • Username with relevant relevant trading permissions
  • Authorized Web API session
  • Brokerage session (access to IServer endpoints)
  • Account ID of an account that can receive the order, and for which your username has trading permissions

New Order Example

The following workflow describes the submission of a new order ticket.

Values needed:

  • Contract ID (“conid”) for the desired instrument(s)
  • Your desired order handling instructions

A POST request to the /iserver/account/{accountId}/orders endpoint is used to submit a new order ticket to the account referenced by {accountId} in the path.

This endpoint takes one required path parameter:

  • accountId: The account ID of the account to which the order will be placed.

This endpoint also requires a JSON body. The specific keys required to successfully submit a given order ticket will vary depending on a variety of factors, including order type. More information on the construction of order tickets can be found on our Order Types page.

However, at a minimum, any new order ticket submitted via the Web API will require in its body:

  • conid: The instrument’s conid
  • orderType: The Order Type of the new order ticket
  • side: The side of the order being placed (e.g., “BUY” or “SELL”)
  • tif: Time in force, the duration for which the order will work.
  • quantity: A number of units of the instrument

Please consult our Reference Material for a list of all JSON keys available when submitting new order tickets.

Suppose we have trading permissions for account DU123456.
We’d like submit a new order to this account to buy 100 shares of AAPL, with a limit price of USD 165, to work for the remainder of today’s regular trading hours (an unmodified “day” order).

First we must have obtained IB’s conid for AAPL stock, trading in the US in USD, which is 265598.

We must also know how to represent our desired handling instructions to the Web API:

  • A buy order is "side":"BUY"
  • A quantity of 100 shares is "quantity":100
  • A limit order is "orderType":"LMT"
  • A limit price of USD 165 is "price":165
  • A day order is "tif":"DAY"
  • And finally, AAPL’s conid is "conid":265598

Note that both the keys and values above are case-sensitive.
Care must also be taken to ensure the correct JSON data types are used, as detailed in our Reference Material.

We may then construct the following request:

POST https://api.ibkr.com/v1/api/iserver/account/DU123456/orders
[
  {
    "conid": 265598,
    "side": "BUY",
    "orderType": "LMT",
    "price": 165,
    "quantity": 100,
    "tif": "DAY"
  }
]

Note also that the body of this POST request requires a JSON array containing the order ticket object.
This array is used to submit order brackets, as detailed below.
For now, we will submit only a single order ticket by way of a single object element in this array.

If we are successful in submitting our order, we will receive a response that includes an order_id value that can be used to keep track of the status of the order, as well as an indication of its current status at the time of submission:

{
  "order_id": "987654",
  "order_status": "Submitted",
  "encrypt_message": "1"
}

Order Reply Messages

In some cases the response to an order submission request might not deliver an acknowledgment.
Instead, it might contain an “order reply message” — essentially a notice — which must be confirmed via a second request before our order ticket can go to work.

The receipt of such an “order reply message” does not indicate that the order is rejected or otherwise encountered a problem.
Rather, IB requires explicit confirmation of some element of the order ticket, or some aspect of our subsequent handling, before we can seek the order’s execution.

Very often these messages pertain to precautionary settings that are client-configurable for a given username — effectively “fat finger” protections that you can adjust or remove if desired:

[
  {
    "id": "07a13a5a-4a48-44a5-bb25-5ab37b79186c",
    "message": [
      "The following order \"BUY 100 AAPL NASDAQ.NMS @ 165.0\" price exceeds \nthe Percentage constraint of 3%.\nAre you sure you want to submit this order?"
    ],
    "isSuppressed": false,
    "messageIds": [
      "o163"
    ]
  }
]

Aside from the content of the message, there are two important values delivered in such an “order reply” response.

First, we have an id, which uniquely identifies the emitted message.
Via the /iserver/reply/{messageId} endpoint, we can use this id value to dismiss the message and put our order to work:

POST https://api.ibkr.com/v1/api/iserver/reply/a12b34c5-d678-9e012f-3456-7a890b12cd3e
{"confirmed":true}

The above request requires a JSON body containing {"confirmed":true}, which is an instruction to IB that the message has been received, and you would like to continue with your order.

Provided the order can be accepted and put to work, the response to your /iserver/reply/{messageId} request will be an order acknowledgement response as shown above:

{
  "order_id": "1234567890",
  "order_status": "Submitted",
  "encrypt_message": "1"
}

Another important value (or set of values) to capture from order message response is messageIds, as in "messageIds": ["o163"] above.

These messageIds strings categorize varieties of order reply messages.
You can use these IDs to suppress certain types of order reply messages for the remainder of your username’s current Web API brokerage session.

Please see the Suppressing Order Reply Messages section for more detail.

Suppressing Order Reply Messages

The following response to an order ticket submission indicates that we must confirm some aspect of our order ticket before it will be accepted:

[
  {
    "id": "07a13a5a-4a48-44a5-bb25-5ab37b79186c",
    "message": [
      "The following order \"BUY 100 AAPL NASDAQ.NMS @ 165.0\" price exceeds \nthe Percentage constraint of 3%.\nAre you sure you want to submit this order?"
    ],
    "isSuppressed": false,
    "messageIds": [
      "o163"
    ]
  }
]

We call these messages “order reply messages”.

The "messageIds" array contains identifiers that categorize the type of order reply message we’ve received.
In this case, we’ve received "messageIds": ["o163"].

Certain types of order reply messages may be suppressed for the duration of your username’s current Web API brokerage session.

When a category of order reply messages is suppressed, you will no longer be sent order reply message responses requiring confirmation.
Instead, a valid order ticket will be accepted and acknowledged immediately. Invalid order tickets will be rejected.

The /iserver/questions/suppress endpoint provides this suppression mechanism.
You may POST an array of messageIDs to suppress those order message types for the remainder of the Web API brokerage session:

POST https://api.ibkr.com/v1/api/iserver/questions/suppress
{"messageIds": ["o163"]}

The response will confirm their suppression:

{"status": "submitted"}

You do not need to have received a given messageID value previously in order to suppress it.
We recommend that you submit this list of messages to be suppressed at the beginning of your brokerage session, prior to conducting any trading.
If you would like to suppress a new type of message while trading, please resend the complete array of messageIds.

You may also undo all suppression of messages within your current brokerage session:

POST https://api.ibkr.com/v1/api/iserver/questions/suppress/reset

And the response will confirm the restoration of delivery of all messages generated during order submission:

{"status": "submitted"}

Order Rejections

Documentation coming soon.

Previewing Orders

Documentation coming soon.

Modifying Orders

The following example describes the submission of a request to modify an existing, unfilled order ticket.

Values needed:

  • All previously submitted order handling instructions, including the instrument’s conid
  • The orderId of the order ticket to be modified

A POST request to the /iserver/account/{accountId}/order/{orderId} endpoint is used to submit a request to modify the order ticket referenced by {orderId} in the account {accountId}.

This endpoint takes two required path parameters:

  • accountId: The account ID to which the unfilled order belongs.
  • orderId: The orderId of the order ticket to be modified.

This endpoint also requires a JSON body. This JSON body must be a single JSON object (note: not an array) containing all of the attributes and handling instructions of the original order ticket.
All JSON keys from the initial order submission must be present, and all JSON values must also be the same, except for the value(s) you seek to modify.

Note that order modification can be subject to different sets of market rules compared to new order submission. Our /iserver/secdef/rules endpoint can be used to inspect the ruleset enforced on a modification.

Suppose we have an active, unfilled order with orderId 987654 belonging to account DU123456, originally submitted with the following handling instructions:

[
  {
    "conid": 265598,
    "side": "BUY",
    "orderType": "LMT",
    "price": 165,
    "quantity": 100,
    "tif": "DAY"
  }
]

We’d like to change the limit price of this order from 165 to 170.

To do so, we send the following request:

POST https://api.ibkr.com/v1/api/iserver/account/DU123456/order/987654
{
  "conid": 265598,
  "side": "BUY",
  "orderType": "LMT",
  "price": 170,
  "quantity": 100,
  "tif": "DAY"
}

Note first that order modification addresses only a single order per request.
Therefore, this request does not use a JSON array as a container for the modified order ticket object.
Instead, the modified order ticket object is the entirety of the request body.

Additionally, we must ensure that all other attributes of the order ticket, aside from the value being altered, are identical to the current, pre-modification attributes of the existing order ticket.
While it should be sufficient to store the contents of a successfully submitted new order ticket client-side, we may also inspect the contents of an existing order ticket with the Order Status endpoint, /iserver/account/{accountId}/order/status/{orderId}.

A successful order modification will return a response similar to a successful new order submission:

{
  "order_id": "987654",
  "order_status": "Submitted",
  "encrypt_message": "1"
}

Alternatively, we may also receive an order reply message, as described above.

Canceling Orders

Values needed:

  • The orderId of the order ticket to be canceled

A DELETE request to the /iserver/account/{accountId}/order/{orderId} endpoint is used to submit a request cancel the order ticket referenced by {orderId} in the account {accountId}.

This endpoint takes two required path parameters:

  • accountId: The account ID to which the unfilled order belongs.
  • orderId: The orderId of the order ticket to be modified.

The DELETE method of this endpoint does not accept any JSON body.

To cancel an order with orderId 987654, we send the following request:

DELETE https://api.ibkr.com/v1/api/iserver/account/DU123456/order/987654

A successful request for order cancellation returns a message that our request has been received:

{
    "msg": "Request was submitted",
    "order_id": 987654,
    "conid": 265598,
    "account": "DU123456"
}

Note that the above response indicates our request to cancel order 987654 was received, but not that the order ticket itself has been canceled. It is possible that an order working at an exchange or other external venue cannot be canceled, for instance, as a result of auction-related deadlines.

Submitting Order Brackets

Documentation coming soon.

Orders for Combos/Spreads

Documentation coming soon.

Monitoring Live Orders

Documentation coming soon.

Monitoring Executions

Documentation coming soon.

Portfolio and Positions

New documentation for portfolio and positions functionality is coming soon.

For now, please consult the existing Client Portal Web API documentation for these features:

Alerts and FYIs

New documentation for alert and FYI functionality is coming soon.

For now, please consult the existing Client Portal Web API documentation for these features:

Account Registration

New documentation is coming soon. In the meantime, please consult the documentation for Digital Account Management v1.0.

Account Management

New documentation is coming soon. In the meantime, please consult the documentation for Digital Account Management v1.0.

Funds and Banking

New documentation is coming soon. In the meantime, please consult the documentation for Digital Account Management v1.0.

Statements

New documentation is coming soon. In the meantime, please consult the documentation for the Flex Web Service.

IBKR Campus Newsletters

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