# Unable to add new post using API
**URL:** https://meta.discourse.org/t/unable-to-add-new-post-using-api/331861
**Category:** Support
**Created:** [October 21, 2024, 10:12am UTC](https://meta.discourse.org/t/unable-to-add-new-post-using-api/331861 "2024-10-21T10:12:46Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@mryogi](https://meta.discourse.org/u/mryogi)
#### Post date: [October 21, 2024, 10:12am UTC](https://meta.discourse.org/t/unable-to-add-new-post-using-api/331861/1 "2024-10-21T10:12:46Z")
Hi I am unable to add new post on topic in my discourse forum using API, my code:
```plaintext
function postComment(topicId, comment) {
const url = `${DISCOURSE_API_URL}/t/${topicId}/posts.json`; // Ensure this URL is correct
Logger.log(`Posting to URL: ${url}`);
const headers = {
"Api-Key": DISCOURSE_API_KEY,
"Api-Username": DISCOURSE_API_USERNAME
};
const payload = {
post: {
topic_id: topicId,
raw: comment
},
};
const options = {
method: "post",
contentType: "application/json",
headers: headers,
payload: JSON.stringify(payload),
muteHttpExceptions: true, // To capture the full error response
};
try {
const response = UrlFetchApp.fetch(url, options);
const jsonResponse = JSON.parse(response.getContentText());
// Log the response for debugging
Logger.log(`Response Code: ${response.getResponseCode()}`);
Logger.log(`Response Body: ${JSON.stringify(jsonResponse, null, 2)}`);
// Check if the posting was successful
if (response.getResponseCode() === 200) {
Logger.log(`Posted comment successfully: ${JSON.stringify(jsonResponse, null, 2)}`);
} else {
Logger.log(`Failed to post comment: ${JSON.stringify(jsonResponse, null, 2)}`);
}
return jsonResponse; // Return the API response
} catch (error) {
Logger.log(`Error posting comment: ${error}`);
return null; // Return null on error
}
}
```
getting this response:
```plaintext
Info
Response Code: 404
3:35:29 PM
Info
Response Body: {
"errors": [
"The requested URL or resource could not be found."
],
"error_type": "not_found"
}
```
even though forum topic exists and I can post on it directly on forum website.
Please help.
---
### Author:  [@pfaffman](https://meta.discourse.org/u/pfaffman)
#### Post date: [October 21, 2024, 12:24pm UTC](https://meta.discourse.org/t/unable-to-add-new-post-using-api/331861/2 "2024-10-21T12:24:24Z")
404 not likely means that your api key is bad or not getting passed correctly.
Unless it means that you’re actually using the wrong path. If you [Reverse engineer the Discourse API](https://meta.discourse.org/t/reverse-engineer-the-discourse-api/20576) for a post, is that the path that’s used?
---
### Author:  [@mryogi](https://meta.discourse.org/u/mryogi)
#### Post date: [October 22, 2024, 4:47am UTC](https://meta.discourse.org/t/unable-to-add-new-post-using-api/331861/3 "2024-10-22T04:47:59Z")
I am using this path: `${DISCOURSE_API_URL}/t/${topicId}/posts.json`
where `DISCOURSE_API_URL = "https://community.xxxxxxxxxxx.com"`
---
### Author:  [@simon](https://meta.discourse.org/u/simon)
#### Post date: [October 23, 2024, 6:00am UTC](https://meta.discourse.org/t/unable-to-add-new-post-using-api/331861/4 "2024-10-23T06:00:41Z")
> [@mryogi](#):
>
> I am using this path: `${DISCOURSE_API_URL}/t/${topicId}/posts.json`
I think the URL for replying to a topic via the API is `/posts.json`. When creating a reply, as opposed to when you’re creating a new topic, the `topic_id` is a required param.
Details are here: [Discourse API Docs](https://docs.discourse.org/#tag/Posts/operation/createTopicPostPM), but you can also just create a reply to a topic through your site’s UI and check the RequestURL that’s set in the “network” section of your browser’s web inspector.