# Mattermost MCP Server

> Use this tool when you need to integrate Claude with a self-hosted Mattermost server to fetch RSS feeds and post messages. It solves the problem of automating message posting to Mattermost channels using OAuth authentication. The tool takes RSS feeds as input and outputs posted messages to the Mattermost server, ideal for use cases requiring automated content sharing and team notifications.

Canonical page: https://skillsregistry.net/skills/jarviscodes-mattermost-mcp  
JSON: https://api.skillsregistry.net/v1/skills/jarviscodes-mattermost-mcp

## Description

Enables Claude to fetch RSS feeds and post messages to a self-hosted Mattermost server using OAuth authentication.

## Trust

- **Trust score (0–1):** 0.69
- **Verification tier:** scanned
- **Last scanned:** 2026-08-31

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** communication
- **Updated:** 2026-08-31

## Source

- **Source listing:** [Glama](https://glama.ai/mcp/servers/u0okesqs21)
- **Repository:** <https://github.com/jarviscodes/mattermost-mcp>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "jarviscodes-mattermost-mcp"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/jarviscodes-mattermost-mcp` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/jarviscodes-mattermost-mcp/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt