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Mattermost

Mattermost

Beginner14 minutes3 questions2026-08-09
The idea in one minute

Start with meaning, then move to detail.

This lesson explains Mattermost as part of getting started with Hermes correctly. You will learn what it does, when it matters, and the smallest safe test that proves it works.

If you are new

If you are new, do not memorize names. Focus on three questions: what problem does this solve, what access does it need, and how can you verify the result?

For hands-on use

For practice, inspect the first example, identify its effects, run it on test data, and compare the result with the source claim.

For specialists

For advanced readers, inspect How Hermes Behaves, Session Model in Mattermost, Step 1: Enable Bot Accounts, then verify failure modes and version compatibility.

What do you need first?

No prior experience is required; follow the steps on a safe test setup first.

What will you know?

A clear outcome before you read.

  • Understand Mattermost without assumed prior knowledge.
  • Separate the source description from what still needs testing in your environment.
  • Read the first command and identify its inputs and outputs before copying it.
Lesson terms

Short definitions before the details.

Provider
The service that runs or provides access and authentication to a model.
Gateway
The process that connects Hermes to channels such as Telegram or Discord and routes messages.
Session & memory
A session holds conversation context, while memory keeps selected facts that should persist.
Official page description

Set up Hermes Agent as a Mattermost bot

Topic map

What does the source say, and in what order?

  1. 01
    How Hermes Behaves

    Start here to understand the core idea or structure.

  2. 02
    Session Model in Mattermost

    Read this after the foundation, then connect it to the previous step.

  3. 03
    Step 1: Enable Bot Accounts

    Read this after the foundation, then connect it to the previous step.

  4. 04
    Step 2: Create a Bot Account

    Read this after the foundation, then connect it to the previous step.

  5. 05
    Step 3: Add the Bot to Channels

    Read this after the foundation, then connect it to the previous step.

  6. 06
    Step 4: Find Your Mattermost User ID

    Read this after the foundation, then connect it to the previous step.

  7. 07
    Step 5: Configure Hermes Agent

    Read this after the foundation, then connect it to the previous step.

  8. 08
    Option A: Interactive Setup (Recommended)

    Read this after the foundation, then connect it to the previous step.

  9. 09
    Option B: Manual Configuration

    Read this after the foundation, then connect it to the previous step.

  10. 10
    Start the Gateway

    Finish here to verify the result and special cases.

Examples from the official page

Copy only after you understand the effect.

group_sessions_per_user: true
group_sessions_per_user: false
curl -H "Authorization: Bearer YOUR_TOKEN" \ https://your-mattermost-server/api/v4/users/me | jq .id
Try it now

Read the first command and identify its inputs and outputs before copying it.

Match every command to your installed Hermes version, review the files and accounts it can reach, and use non-sensitive data for the first test. If this explanation differs from the source, the official source wins.

Knowledge check

Three decisions before completion.

1. What is the source of truth when “Mattermost” changes?
2. What is the best way to apply this lesson?
3. What should happen before a step can modify files or an external account?