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---
id: examples
title: Quick-start with curl
description: Copy-pasteable curl quick-start for the most common Mattermost API operations.
sidebar_position: 2
sidebar_label: Examples
---
<Eyebrow>Examples</Eyebrow>
Copy-pasteable requests for the most common operations. Replace `your-mattermost-server.com` with your server URL and `<TOKEN>` with a valid personal access token.
## Log in and get a session token
```bash
curl -i -X POST https://your-mattermost-server.com/api/v4/users/login \
-H 'Content-Type: application/json' \
-d '{
"login_id": "user@example.com",
"password": "yourpassword"
}'
```
The session token is returned in the `Token` response header.
## Post a message to a channel
```bash
curl -X POST https://your-mattermost-server.com/api/v4/posts \
-H 'Authorization: Bearer <TOKEN>' \
-H 'Content-Type: application/json' \
-d '{
"channel_id": "<CHANNEL_ID>",
"message": "Status update from API"
}'
```
## Create a channel
```bash
curl -X POST https://your-mattermost-server.com/api/v4/channels \
-H 'Authorization: Bearer <TOKEN>' \
-H 'Content-Type: application/json' \
-d '{
"team_id": "<TEAM_ID>",
"name": "ops-incident-2026-05",
"display_name": "Ops Incident — 2026-05",
"type": "O"
}'
```
## Add a user to a channel
```bash
curl -X POST https://your-mattermost-server.com/api/v4/channels/<CHANNEL_ID>/members \
-H 'Authorization: Bearer <TOKEN>' \
-H 'Content-Type: application/json' \
-d '{ "user_id": "<USER_ID>" }'
```
## Upload a file
```bash
curl -X POST https://your-mattermost-server.com/api/v4/files \
-H 'Authorization: Bearer <TOKEN>' \
-F 'channel_id=<CHANNEL_ID>' \
-F 'files=@./report.pdf'
```
## Trigger a slash command
```bash
curl -X POST https://your-mattermost-server.com/api/v4/commands/execute \
-H 'Authorization: Bearer <TOKEN>' \
-H 'Content-Type: application/json' \
-d '{
"channel_id": "<CHANNEL_ID>",
"command": "/echo Hello from the API"
}'
```
<Tip>
Every endpoint page in the **[Reference](/api/reference/login)** sidebar includes the equivalent samples in **curl, PowerShell, Python, Node, and Go** — selectable via the language tab strip on the right side of the page.
</Tip>