# Slack MCP Server

> Use this tool when you need to integrate your MCP client with Slack workspaces to post messages and retrieve user information. It solves problems of communication and collaboration by enabling seamless interaction between MCP clients and Slack, allowing for automated message posting and user list querying. The Slack MCP Server takes in MCP client requests and outputs posted messages and user data to Slack workspaces.

Canonical page: https://skillsregistry.net/skills/avimbu-slack-mcp-server  
JSON: https://api.skillsregistry.net/v1/skills/avimbu-slack-mcp-server

## Description

A connector enabling Claude Desktop or any MCP client to interact with Slack workspaces to post messages and query user lists.

## Trust

- **Trust score (0–1):** 0.97
- **Verification tier:** verified
- **Last scanned:** 2026-09-19

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** communication
- **Updated:** 2026-09-19

## Source

- **Source listing:** [Glama](https://glama.ai/mcp/servers/x20zczf7og)
- **Repository:** <https://github.com/AVIMBU/slack-mcp-server>

## 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": "avimbu-slack-mcp-server"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/avimbu-slack-mcp-server` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/avimbu-slack-mcp-server/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