---
title: "mssgs developer docs: webhooks, slash commands, buttons, MCP and more"
description: "Build on mssgs: post into channels with webhooks, add slash commands and buttons, update messages live, connect AI over MCP, run agents and bring your game."
canonical: https://docs.mss.gs/en
language: en
---

# Build on mssgs

Post into channels from your own tools, give your community slash commands and buttons, connect an AI assistant or show what someone is playing. Each page starts with what it looks like in the app.

## What do you want to build?

#### Build #1847 passed

#### Pull request #212 opened

Faster search in the channel list

#### Deploy v2.1 to production?

#### Fix the misaligned login button

## Not sure which one you need?

| I want to… | Use |
| --- | --- |
| Get CI, deploy or monitoring alerts in a channel | [Post messages with a webhook](https://docs.mss.gs/en/webhooks) |
| Make those alerts look good, with a status and fields | [Design message cards](https://docs.mss.gs/en/bots) |
| Let members type /something and get an answer | [Add slash commands](https://docs.mss.gs/en/commands) |
| Ask for approval with one tap | [Add buttons](https://docs.mss.gs/en/buttons) |
| Show the progress of a long job in one message | [Update messages live](https://docs.mss.gs/en/live-updates) |
| Let Claude summarize or answer in my chats | [Connect an AI assistant](https://docs.mss.gs/en/mcp) |
| Let an AI pick up a task when someone asks in a channel | [Run an agent in a channel](https://docs.mss.gs/en/agents) |
| Show "Playing" with a Join button for my game | [Show what someone is playing](https://docs.mss.gs/en/game-sdk) |

Webhooks, commands, buttons and live updates work together: one integration can post a card, take a /command, react to a button and update its own message.

## Also for developers