Product overview

FIXEye is a multi-purpose FIX session surveillance and visibility platform.

FIXEye presents search results in an easy to work with form. It has intuitive graphical user interface and uses many operational features familiar from MS Excel.

FIXEye can process multiple log-files distributed on the network.

FIXEye features

FIXEye main window


Starting FIXEye

Quick start

At the very beginning FIXEye displays a dialog form for opening log files. You can either browse for files by clicking the corresponding step or skip this step by clicking the Cancel button.

Opening file

On the File menu, click Open Log Files or Open Log Folder.

You can also use the button on your toolbar.

Sending to FIXEye

You can send log files to FIXEye from any folder on your computer.

Multiple tabs

FIXEye allows creating multiple data windows (tabs). It is possible to specify different search text, filter and view for each data window.

Data search


Select the type of message you want to find, type your search query in any search box in the main window and hit the Search button.

You can stop the search process by clicking the Cancel button on the status bar.

Tag=value search

If  tag=value constructions with or without regular expressions are detected in search string then all other text is ignored and the searching engine uses only these constructions. Such searching mode is similar to a filter. Messages are parsed one-by-one, search criteria are applied and message satisfying search criteria is displayed. If some preliminary filter is set then search criteria derived from search string analysis is added to the preliminary filter and the result filter construction is applied to FIX message. 

All unnecessary text before the tag will be ignored, but after tag value, there must be a space character. All other symbols will "spoil" the search string and tag=value construction will not be detected. For example "asdf34=1" will work as "34=1" and "34=1asdf" will not work

Regular expressions may be used similarly to filter (see Datafilter). Space between tag=value patterns means AND logical operator.

Search is case sensitive. 

Examples for this type of search are present in the table below.


query type

test example


single tag=value pattern

query: 35=d

only messages where condition 35=d is true are displayed in the output

two tag=value patterns separated by space

query: 35=d 34=6

only messages where condition 35=d is true and 34=6 is true are displayed in the output

Context search

Context search means that all input in "search box" is considered as plain text. It is divided into text patterns according to some rules described below and these patterns are searched for in input log file. First a text put in “search box” is analyzed.

 A text in quotes (" ") is considered as one pattern and is taken as exact text phrase for the searching engine. The input text is divided into many patterns when space characters are met. Each pattern is searched. Space character here means OR logical operator. Plus character (+) at the beginning of pattern is used for logical AND operation. That means that searching <pattern1> +<pattern2> will lead to success only if both pattern1 and pattern2 are found in the input stream.

If only +<pattern>  is present in search string then no matches will be found even if <pattern>  is contained in the input stream

Context search differs from tag=value search. All input stream is analyzed and the results are shown only at the end. Note, context searching may take a long time if input file is big! By the way you can press "cancel" button at the bottom of the page to stop the process. 

Searching of patterns in a FIX message is more complicated than ordinary plain text search. First of all search engine looks for patterns in a raw fix message. Then fix message is parsed and tag IDs are converted to names, (e.g. 35=A is turned to MsgType=A) and the search engine looks for patterns again. And for the third time search tag values are  converted to text equivalents, (e.g. 35=A is turned to MsgType=Logon).   At the display step all FIX messages satisfying search criteria are displayed. 

Context search is case insensitive.


Examples for this type of search are present in the table below.

query type

test example


single pattern

query: heart

"heart" pattern has been found in 35 tag and 108 tag

several patterns divided by spaces, no quotes

query: heart security

all messages where "heart" or "security" patterns have been found

are displayed

several patterns divided by spaces, all text in quotes

query: "list of securities"

all messages where exact phrase "list of securities" has been found

are displayed

two patterns, one of them with '+' character 

query: security +gas

Only messages where both "security" and "gas" has been found are


data search + data filter 

It is sometimes useful to do some preliminary filtering and start searching in the results of the filter. For more information on data filtering see Datafilter.  When filter is set and some text put in search box FIXEye will first apply filter and then search in the filter output.

Search within message details

You can search for a specific context in a raw message.

FIXEye - Splunk integration

Some basic capabilities for searching in Splunk system using FIXEye have been introduced (since 4.1 version). See How to use FIXEye-Splunk integration capabilities article.



You can use an agent to browse log files on any remote computer if security or any other issues prevent your direct access to the machine.

Please note that the agent should already be installed, configured and run on the remote computer.

If connection is available and everything is setup properly, your agent status will change to “Connected”.

Please note that the agent should already be installed, configured and run on the remote computer.

Message details

To view message details:

Comparing messages

You can compare two messages tag by tag in a separate window.

Please note, that if you select more than two messages, FIXEye will compare only the first and the last one.

You can exclude separate tags from the comparison.

= values are identical
<> values are different
<= tag is present only in the left message
=> tag is present only in the right message

Comparing files

You can compare two log files message by message using our new Files Compare tool.

“<>” indicates that messages are different

Message sorting

You can sort messages in ascending or descending order.

Message auto filter

You can use different filters to show or hide specific messages.

Additional tools


FIXEye provides a powerful real-time monitoring tool – Watch. You can create multiple processes with various filters and search parameters to follow updates in selected files.

You can stop or pause the process in the Realtime Files Watch window using the correspondent buttons on the Watches toolbar.

You can add an agent to monitor the files on a remote computer.


FIX Events Viewer

You can create a subscription to the following FIX session events:

Click the button on the FIX Events toolbar and select your subscription type.

It takes value from tags 52 to calculation the Delayed Order Acknowledge. Pay attention to the accuracy of 52 tags of Orders and Execution reports. They may use different accuracy (seconds, milliseconds etc).

Delayed Order Acknowledge is calculated only on the first pair of Order/Execution report messages. That is, the delay will be calculated according to the first response received, regardless of his status: new, partial fill, fill or even rejected.

You can receive notification emails on every FIX session event.


File list

All opened log files are listed in the Files window.

Dictionaries list

FIXEye covers standard FIX-features by default, but you can work with non-standard FIX-dialects after loading special files (XML-format) that contain the necessary descriptions.


Sessions list

All sessions found in opened log files are listed in the Sessions window.

Customizing interface

You can adjust the viewing depending on how you arrange the windows in the FIXEye. The following options are just some of the ways that windows can be arranged:


Tool windows can be docked to one side of a frame in the FIXEye:

Tool windows such as Files and Sessions support a feature named Auto-Hide. When a window is auto-hidden, its name and icon are displayed on a tab at the edge of the FIXEye.
To turn on Auto-Hide:

To Turn off Auto-Hide:

Tool windows can be undocked from the FIXEye and moved anywhere on the desktop.

Data filter

You can use different filters to show specific messages only.

Do one of the following:

When you are creating a new filter, you may indicate one or more conditions.

You can save a back copy of the current filter by clicking button in the Filter window.

You can address a field tag, which is a part of a repeating group while creating a new filter.

Custom view

You can customize a message view (a set of displayed columns) in the table.

Do one of the following:

The “Compact” preset view allows showing messages in a compact form, i.e. numbers for tags and values without description.
The “Detailed” preset view allows showing maximum information about messages. All tag names except service fields are displayed and all field values are described.
The “Raw Data” preset view allows displaying messages in their raw view, i.e. as a row of symbols.

The “Colored” preset view allows displaying messages in different colors, i.e. a particular color is assigned to every message type, to facilitate visual perception of table data.

When you are creating a new view, you may indicate one or more conditions. Use to add fields and formatting rules and to delete them.


Message validation

You can validate messages in the table against FIX rules.

There are 3 levels of validation:

Invalid messages are marked in the table with icon.
Related error descriptions are placed into Errors tab of this data window.

Order backtrace

This feature shows a trade process as a chart of its states defined by related FIX-messages.

Click on a message or a state shape to see the related object details.

Session backtrace

This feature shows a session process as a chart consisting of its states defined by related Logon and Logout messages and Test Requests.

Click on a message or a state shape to see the related object details.

Order / Session backtrace customizing

You can customize text displayed in shapes.

It is possible to create a dedicated string for each message and state type. It is also possible to put a field value into the string.

Order Blotter

You can check the recent status of orders from the loaded files using Order Blotter.


Exporting backtrace data

You can export data from Order and Session Backtrace diagrams as an image or a plain text.

Exporting table data

You can export table data to a separate text file (.csv or .fix)