![new-york-1071162_1280.jpg](https://steemitimages.com/DQmVsxpdtrcou2s2bAWGQ2JkkPrEjSXARoBvEWR32YDTNdo/new-york-1071162_1280.jpg)
[CC0 Creative Commons Pixabay](https://pixabay.com)

Hi everyone today we explain about the possibility to use the Steem Api to broadcast a comment on a specific user post.
I use the comment on the @steemrepo project because our curators choose good quality posts and can make the upvote/comment on a post directly by our discord server:

![Immagine.png](https://steemitimages.com/DQmfX9LTHR7Xt2sNLVr73zwmqDZgJkhmbUfeUPTdtUchQhG/Immagine.png) 

We use discord because we take this two var used on the script:

>Author: the post author
Permlink: the link of the post author

<h2>Requirements</h2>
Installing the libraries:

>sudo apt-get install nodejs
sudo apt-get install npm
npm install steem --save

<h2>Write the Code</h2>

```
var steem = require("steem");
var wifkey = youprivatepostingkey;
var author = postauthor;
var permlink = thelinkoftheposttocommenton;
var author1 = theuserwewillusetocomment;

  steem.broadcast.comment(
    wifkey,
    author, // Parent Author
    permlink, // Parent Permlink
    author1, // Author
    steem.formatter.commentPermlink(author, permlink),
    '', // Title
    'The comment you wanna add on a post' , // Body,
   { tags: ['test'], app: `steemjs/examples` }, // Json Metadata
    function(err, result) {
      console.log(err, result);
    }
  );
```

<h2>Explain the variables</h2>

To comment on a specific user post we use the steem.js functions called 
**"steem.broadcast.comment"**
**"steem.formatter.commentPermlink"**

- wifkey = the private posting key of the users we are using to comment
- author = called Parent Author is the author of the post we are commenting on
- permlink = is exactly the url we are commenting on
- Author1 = is the username related to the wifkey we are using to comment

Let me do an example:

Imagine you are @yanosh01 and you want to comment this @steemrepo post:

https://steemit.com/steemrepo/@steemrepo/steemrepo-rewarding-undervalued-content-creators

it will be:

- wifkey = the private posting key of yanosh01
- author = steemrepo
- permlink = steemrepo-rewarding-undervalued-content-creators
- Author1 = yanosh01

---------------

<h3>If you like what i'm doing, please upvote me as your Witness</h3>

https://steemit.com/~witnesses

![witness.gif](https://steemitimages.com/DQmbVGHGMJNhUpmqUTeDvvMGaevzaNFdib24Sa9XhVS48XM/witness.gif)