[Solved] Is it possible to send an array with the Postman Chrome extension?

I’ve been using Postman Chrome extension to test out my API and would like to send an array of IDs via post. Is there a way to send something list this as a parameter in Postman?

  user_ids: ["1234", "5678"]

Solution #1:

You need to suffix your variable name with [] like this:


If that doesn’t work, try not putting indexes in brackets:

my_array[]  value1
my_array[]  value2


  • If you are using the postman packaged app, you can send an array by selecting raw / json (instead of form-data). Also, make sure to set Content-Type as application/json in Headers tab.
    Here is example for raw data {"user_ids": ["123" "233"]}, don’t forget the quotes!

  • If you are using the postman REST client you have to use the method I described above because passing data as raw (json) won’t work. There is a bug in the postman REST client (At least I get the bug when I use

Respondent: Benjamin Crouzier

Solution #2:

For me did not work with array[0], array1, .. or array[], array[], … .
It works more simply:
enter image description here

Respondent: Popa Andrei

Solution #3:

Here is my solution:

use form-data and edit as below:

Key       Value 
box[]      a
box[n1]    b
box[n2][]  c
box[n2][]  d

and you will get an array like this:

Respondent: Gary

Solution #4:

If you want an array of dicts, try this:
enter image description here

Respondent: C.K.

Solution #5:

I also had that problem, and solved it by doing the following:

1 – Going to the request header configuration and added the following:

Accept : application/json, text/plain, */*
Content-Type : application/json;charset=UTF-8

2 – To send the json array, I went to raw json format and set the user_ids to array:

user_ids: ["bbbbbbbbbb","aaaaaaaaaa","987654321","123456789"]
Respondent: mesteves

Solution #6:

Set Body as raw and form the array as follows:

enter image description here

Respondent: danywarner

Solution #7:

It is important to know, that the VALUE box is only allowed to contain a numeral value (no specifiers).

If you want to send e.g. an array of “messages” with Postman, each having a list of key/value pairs, enter e.g. messages[][reason] into the KEY box and the value of reason into the VALUE box:

enter image description here

The server will receive:

{"messages"=>[{"reason"=>"scrolled", "tabid"=>"2"}, {"reason"=>"reload", "tabid"=>"1"}], "endpoint"=>{}}

Solution #8:

As mentioned by @pinouchon you can pass it with the help of array index

my_array[0] value
my_array[1] value

In addition to this, to pass list of hashes, you can follow something like:

my_array[0][key1] value1

my_array[0][key2] value2


To pass param1=[{name:test_name, value:test_value}, {...}]

param1[0][name] test_name

param1[0][value] test_value
Respondent: Manoj

Solution #9:

Go to Header and select Content-Type = application/json then go to body and select raw and then pass an array.enter image description here

Respondent: Farhan

Solution #10:

this worked for me. to pass an array of Item object {ItemID,ColorID,SizeID,Quntity}

Postman data

Respondent: Abdu Imam

Solution #11:

in headers set

content-type : application/x-www-form-urlencoded

In body select option


and insert data as json array

user_ids : ["1234", "5678"]
Respondent: Aris

Solution #12:

This also works for lists within the object:


the equivalent JSON would be:

    "Id": 37,
    "IdParent": 26,
    "Name": "Poplet",
    "Values": [
            "Id": 1349,
            "Name": "SomeName"
            "Id": 1350,
            "Name": "AnotherName"
Respondent: onicofago

Solution #13:

Choose either form-data or urlencoded and use the same key “user_ids”. The server should receive it as an array.

Respondent: Abhinav

Solution #14:

    "data" : [  
            "key1" : "value1",
            "key2" : "value2"   
            "key01" : "value01",
            "key02" : "value02"             
            "key10" : "value10",
            "key20" : "value20"   

You can pass like this.
Hope this will help someone.

Respondent: Narendra Solanki

Solution #15:

In form-data,

   key              value

 user_ids[]         1234
 user_ids[]         5678

Solution #16:

My back-end is written in Ruby on Rails. This is how I sent the array params using Postman. It worked for me.


I’m using x-www-form-urlencoded. I believe it will work too for form-data.

enter image description here

Respondent: Zulhilmi Zainudin

Solution #17:

I tried all solution here and in other posts, but nothing helped.

The only answer helped me:
Adding [FromBody] attribute before decleration of parameter in function signature:

public string MyFunc([FromBody] string[] obj)
Respondent: Rachel Fishbein

The answers/resolutions are collected from stackoverflow, are licensed under cc by-sa 2.5 , cc by-sa 3.0 and cc by-sa 4.0 .

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