Yes, Channelchat is free to use.

How do I install Channelchat?

Channelchat is a local plugin. Install it using npm package: @reneturcios/channelchat and add the generated configuration snippet to your AI app's MCP config file. Then restart your AI app.

Is Channelchat safe to use?

Channelchat scored 6/10 (moderate risk) in MCP Marketplace's automated security scan. It has 2 high or critical findings to review. It's listed, but review the security report on this page before installing.

What AI apps work with Channelchat?

Channelchat uses the Model Context Protocol (MCP) and works with any MCP-compatible AI app, including Claude, ChatGPT / Codex, Gemini, Copilot, Cursor, and more.

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Channelchat MCP Server

by CloudCorpRecords

Developer ToolsModerate6.0MCP RegistryLocal

Free

Server data from the Official MCP Registry

Slack channels, messages, threads, reactions and users via the Slack Web API.

About

Slack channels, messages, threads, reactions and users via the Slack Web API.

Security Report

6.0

Moderate6.0Moderate Risk

channelchat is a Slack Web API MCP server that requires SLACK_BOT_TOKEN and SLACK_TEAM_ID and sends the token only as a Bearer header to https://slack.com/api. No malicious patterns, shell execution, dynamic code evaluation, hardcoded secrets, or data exfiltration were found, and its network and environment access match its stated purpose. The only observations are minor: an npm scope and repository owner mismatch, and limited input bounds validation. Supply chain analysis found 4 known vulnerabilities in dependencies (0 critical, 2 high severity). Package verification found 1 issue.

8 files analyzed · 8 issues found

Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.

Permissions Required

This plugin requests these system permissions. Most are normal for its category.

HTTP Network Access

Connects to external APIs or services over the internet.

env_vars

Check that this permission is expected for this type of plugin.

How to Install

Add this to your MCP configuration file:

{
  "mcpServers": {
    "io-github-cloudcorprecords-channelchat": {
      "args": [
        "-y",
        "@reneturcios/channelchat"
      ],
      "command": "npx"
    }
  }
}

Documentation

View on GitHub

From the project's GitHub README.

channelchat

channelchat gives an MCP client a working presence in a Slack workspace: list the channels, post a message, carry on a thread, drop a reaction, and look back over history or up at the member list. It implements the full documented server-slack tool set — all eight tools — against the Slack Web API.

Two environment variables are required, exactly as in the original server: SLACK_BOT_TOKEN (the bot user OAuth token, sent as a Bearer token) and SLACK_TEAM_ID (the workspace id, passed to the methods that accept one). If either is missing, every call fails with an error naming the missing variable instead of failing the handshake.

Slack's Web API answers HTTP 200 even when a call fails, with an ok: false body; channelchat surfaces that body's error string as the tool error, so channel_not_found and friends reach the caller verbatim.

Install

npx @reneturcios/channelchat slack_list_channels
docker run -i -e SLACK_BOT_TOKEN -e SLACK_TEAM_ID ghcr.io/cloudcorprecords/channelchat

CLI

channelchat slack_list_channels --limit 20
channelchat slack_post_message --channel-id C0123 --text "deploy finished"
channelchat slack_reply_to_thread --channel-id C0123 --thread-ts 1700000000.000100 --text "looking into it"
channelchat slack_add_reaction --channel-id C0123 --timestamp 1700000000.000100 --reaction thumbsup
channelchat slack_get_user_profile --user-id U0123
channelchat --version

Exit codes: 0 success, 1 API error, 2 usage error.

MCP server

npx -y @reneturcios/channelchat mcp

{
  "mcpServers": {
    "channelchat": {
      "command": "npx",
      "args": ["-y", "@reneturcios/channelchat", "mcp"],
      "env": { "SLACK_BOT_TOKEN": "xoxb-...", "SLACK_TEAM_ID": "T0123" }
    }
  }
}

Tools

Tool	Required	Optional
`slack_list_channels`	—	`types`, `exclude_archived`, `limit`
`slack_post_message`	`channel_id`, `text`	—
`slack_reply_to_thread`	`channel_id`, `thread_ts`, `text`	—
`slack_add_reaction`	`channel_id`, `timestamp`, `reaction`	—
`slack_get_channel_history`	`channel_id`	`limit`
`slack_get_thread_replies`	`channel_id`, `thread_ts`	—
`slack_get_users`	—	`cursor`, `limit`
`slack_get_user_profile`	`user_id`	—

Tool arguments use the caller-facing names from the documented surface (channel_id, thread_ts, reaction, user_id); the core maps them onto the Web API's parameter names (channel, ts, name, user) when it builds each request.

Development

npm install
npm run build
npm test
npm run dev

Tests run entirely on fake-fetch fixtures, including Slack's HTTP-200-with-ok: false error shape; no network is used.

License

MIT — see LICENSE.

Reviews

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4.8

Local

MCP Marketplace

Free

by mcp-marketplace · Developer Tools

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