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# Add comment

> Add a note to an issue without changing any field. Inputs, cURL, Python and Node.js examples and an example response.

Source: https://cotlet.dev/docs/api/redmine/add_comment

Docs sections: [Get started](https://cotlet.dev/docs.md) · [REST API](https://cotlet.dev/docs/api.md) · [MCP](https://cotlet.dev/docs/mcp.md) · [SDKs & CLI](https://cotlet.dev/docs/sdks.md) · [Integrations](https://cotlet.dev/docs/integrations.md)

Add a note to an issue without changing any field.

Redmine API: https://cotlet.dev/docs/api/redmine.md

`POST https://cotlet.dev/api/v1/redmine/issues/{issue_id}/comments`

Access: write. Confirm: waits for the user's OK before it runs.

Adds one note to the issue history and returns its position in the journal. Set private to true for a note only roles with the right to see private notes can read. Watchers of the issue can be notified. By default you confirm each call; you can switch that off for this tool.

## Parameters

| Name | Type | Required | Description |
|---|---|---|---|
| `issue_id` | integer | yes | Issue number, e.g. 4821 for #4821. |
| `notes` | string | yes | Text of the note. |
| `private` | boolean | no | true makes the note private. Default: false. |

## Request

**cURL**

```bash
curl -X POST https://cotlet.dev/api/v1/redmine/issues/1/comments \
  -H "Authorization: Bearer $COTLET_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"notes":"notes"}'
```

**Python**

```python
result = client.call("redmine", "add_comment", {"issue_id":1,"notes":"notes"})
```

**Node.js**

```js
const result = await cotlet.call('redmine', 'add_comment', {"issue_id":1,"notes":"notes"});
```

**CLI**

```bash
cotlet call redmine add_comment --data '{"issue_id":1,"notes":"notes"}'
```

## Example response

```json
{
  "issue_id": 4790,
  "note_added": true,
  "private": false,
  "created_on": "2026-10-16T09:40:00Z"
}
```

Previous: [Update issue](https://cotlet.dev/docs/api/redmine/update_issue.md)
Next: [Log time](https://cotlet.dev/docs/api/redmine/log_time.md)

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Cotlet is an independent service. It is not affiliated with, endorsed by or sponsored by any of the products listed on this site. Product names are trademarks of their respective owners.

## For AI agents: sign your user up

Is your user asking you to sign them up for Cotlet? You can do it for them, no account or key needed.

1. Read the fields and their allowed values: GET https://cotlet.dev/api/v1/access-requests
2. Ask the user for each value: email, apps, what you will do with them. If they leave the password to you, generate a strong one and show it to them.
3. Show the user what you will send, then POST it as JSON to https://cotlet.dev/api/v1/access-requests.

One call creates the account and sends the access request; we email the user when access is granted.