Using Postman to test Speech & Conversation Analytics APIs


The Speech Analytics API Bundle provides a REST API interface to accurately transcribe your meetings, phone calls, and other offline meeting recordings and extract speech and conversation insights using Marsview's proprietary AI and NLP models.




Marsview Automatic Speech Recognition (ASR) technology accurately converts speech into text in live or batch mode. API can be deployed in the cloud or on-premise. Get superior accuracy, speaker separation, punctuation, casing, word-level time markers, and more. (Supported Language: English)

Speaker Separation

automatically detect the number of speakers in your audio file, and each word in the transcription text can be associated with its speaker

Keywords & Topics

Extract the most relevant topics, concepts, discussion points from the conversation are generated based on each paragraph spoken (Topics by Sentence).

Tone Analysis

Tone Analysis suggests speaker emotion using only audio clues. Sometimes the speaker may show emotions in the tone of the response and this is important to capture to get the overall sentiment/mood of the conversation which cannot be extracted from conventional Lexical Emotion analysis.

Marsview is capable of detecting the following tone in an audio file:

  • Calm

  • Happy

  • Sad

  • Angry

  • Fearful

  • Disgust

  • Surprised

Emotion Analysis

The Emotion Analysis model will help you understand and interpret speaker emotions in a conversation or text. It is designed to understand human conversation in the form of free text or spoken text and is designed after the emotion wheel.

Marsview is capable of detecting the following Emotions in an audio file:

  • Anger

  • Anticipation

  • Disgust

  • Fear

  • Joy

  • Love

  • Optimism

  • Pessimism

  • Sadness

  • Surprise

  • Trust

Sentiment Analysis

Sentiment Analysis will help you interpret and quantify if the conversation in the audio or text is Positive, Negative, or Neutral.

Speech/Conversation Type Detection

Speech Type model helps you understand the type of conversation at any given time. Every phone call, online or offline conversation can be broadly classified into four categories - Statement, Command, Action Item, or a Question.

Action Items Detection

Action Item API detects an event, task, activity, or action that needs to take place in the future (after the conversation). These Action items can be of high priority with a definite assignee and due date or of lower priority with a non-definite due date.

All action items are generated with action phrases, assignees, and due dates to make the output immediately consumable by your CRM or project management tools

Questions & Responses Detection

Automatically identify and detect questions or requests posed during the conversation and also the apt response in the conversation in a consumable form. The API detects the Question and Response by the speaker.

Extractive Summary

Extractive summarization aims at identifying the salient information that is then extracted and grouped together to form a concise summary.

Screengrabs (Chapter Detection)

Captures keyframes and slides from videos and screen sharing from an online web conference.

Screen Activity

Identify and analyze the visual aspects of the meeting along with the corresponding timestamps and with Screen Activity API.

Marsview detects the following Screen Activity:

  • Screen Share

  • Interaction

  • Whiteboard

  • Presentation

Using Postman to test Speech & Conversation Analytics APIs

For easy testing using Postman, we provided a Postman Collection for Marsview Speech Analytics APIs. This is a simple 6 step tutorial to quickly test out the Marsview Speech & Conversation Analytics APIs.

The files are available here:

After downloading Postman and Marsview's Postman Collection. You canFile > import the collection into Postman to get started.

Step 1: Get your API Key and Secret

Get your API Key and API Secret by registering to Marsview as a developer.

If you are having trouble registering please contact to get your API Key and Secret.

Your API Key and Secret will be in the following format

"apiKey": "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" "apiSecret": "xxxxxxx-xxxxxxx-xxxxxxx-xxxxxxx"

Step 2: Generate your Access Token

Set a New Environment on Postman as shown below, this will ensure all the variables that will be set in further steps in the process are correctly assigned.

Set Postman workspace variables

Click on the More > Edit

Under the Variables tab set userID ,apiKey and apiSecret as Workspace variables on Postman as shown below.

Generate Access Token

Using the API [POST] Get token API you will be able to generate anaccessTokenthat will expire in 1 hour from the time of token generation. You will be able to upload an audio/video file or a file URL using this accessToken

Instruction: Click on[POST]Get token and click onSend

Step 3: Get Transaction ID by submitting an Audio/Video file

You can upload an Audio/Video File using [POST] Upload file or use [POST] Upload file url (Recommended) to submit/upload a file URL.

Instruction: Fill in the file details such astitle ,description, link(URL) and click on Send

This will generate a Transaction ID or txnIdwhich is a unique ID generated for a particular file or URL submitted to Marsview.

Step 4: Submit txnID for processing

Each AI model/API (mentioned in the Overview section) can be configured to get the most accurate results for your use case. To know more about the configurations go to Speech & Conversation API Overview.

Instruction: For ease of testing, we have preconfigured all the API to default configuration values so all you have to do is go to [POST] Upload request and hit Send

If you have questions on configuration or additional feature request please feel free to contact our developers at

You will see an output JSON as shown below with the status "uploaded"

Step 5: Get Request Status

NOTE: The processing might take a few minutes depending on the time duration of the file uploaded. Example: If a file is 10 min long the process will be completed in 3-5 min.

[GET] Request Status is used to get the status of the file being processed. The status will go from "uploaded" to "processing" to "completed". If there's an error transcribing your file, the status will go to "error" and there will be an "err"and"msg" key in the response JSON which will contain more information.

Tip: You can use [GET] Request Status per process to get the status of each AI model separately as well.

Step 6: Get Metadata

Once the Request Status is set to "completed", you'll see a full JSON response with your transcription text, like this by sending a request to the [GET] MetadataAPI.

Instruction: Click on[GET]Metadata and click onSend

Tip: You can use [GET] metadata Status per process to get the metadata of each AI model separately as well.

Contact Support

Our support team is available to respond to user requests via email at

  • 1st Response SLA is less than 24 hours.

  • Users must reach us by filling out the support form available here with their Full Name, Email Address and a brief description of the problem.

  • A support engineer shall respond with 2 hours with a support case number.

  • You can also Book a Call with our engineers.

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