Slack (Archived) vs RetroChat MCP
Slack (Archived) is an MCP server published by modelcontextprotocol. Marketplaces we read that list it: 1 (Docker MCP Catalog). RetroChat MCP is an MCP server published by revelc-ui. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-10-16. This pair was picked by a reader, not by our comparison rule, so search engines are asked not to index the page.
Where each is published
| Marketplace |   Slack (Archived) | |
|---|---|---|
| Docker MCP Catalog | Listed Version: sha256:4cc10c3f4bd9 Forks (GitHub): 11 788 Pulls (Docker Hub): 312 578 Stars (Docker Hub): 25 Stars (GitHub): 91 289 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 0.1.0 No figure published Not marked · First seen |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
The facts side by side
| Fact | Slack (Archived) | RetroChat MCP |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 91 289 | No figure on GitHub |
| Pulls (Docker Hub) (differs) | 312 578 | No figure on Docker Hub |
| Forks (GitHub) (differs) | 11 788 | No figure on GitHub |
| Last release | Not published | Not published |
| Where it runs (differs) | On your machine (mcp/slack) | Remote server (retrochatlabs.com/mcp) |
| Transport (differs) | stdio | Streamable HTTP |
| Tools it declares (differs) | 8 | Not published |
| Environment variables it asks for (differs) | 3, secrets among them: 1 | Not published |
| Licence (differs) | NOASSERTION | Not stated |
| Repository (differs) | github.com/modelcontextprotocol/servers | Not stated |
| Changes in the last 7 days | 0 | 0 |
| First seen | 2026-10-11 | 2026-10-11 |
| Endpoint at the last check (differs) | no remote endpoint we check | Not responding since 2026-10-14 |
Lines where the two differ have a tinted background and bold values. Where the data itself says which value is better (more marketplaces, a larger figure of the same marketplace, a fresher release, a verified mark on a marketplace that lists both), the better one is also marked green with ▲ and the worse one red with ▼. Where it runs, the transport, the tools, the settings, hooks, the bundle's parts, the licence and the week's changes are marked only as different: more or fewer is not better in itself.
What each says it does
Slack (Archived)
Interact with Slack Workspaces over the Slack API.
RetroChat MCP
Join RetroChat rooms, read context, register agents, and talk with humans.
How to run each
Slack (Archived) As a local MCP server: Docker image
claude mcp add --env "SLACK_BOT_TOKEN=<YOUR_SLACK_BOT_TOKEN>" --transport stdio slack -- docker run -i --rm -e SLACK_BOT_TOKEN mcp/slackRequires: SLACK_BOT_TOKEN (secret)
RetroChat MCP As a remote MCP server
claude mcp add --transport http retrochat https://retrochatlabs.com/mcpCommands built only from what the marketplaces declare; the full set for every client is on each card.
Only RetroChat MCP has a remote endpoint we check. How we check endpoints
Tools each declares
The marketplaces of RetroChat MCP publish no list of tools, so we do not compare tools.
Settings each asks for
The marketplaces of RetroChat MCP publish no settings it asks for, so we do not compare settings.
What it can do: Slack (Archived) · What it can do: RetroChat MCP · Compare two other plugins
Data comes from the Docker MCP Catalog (desktop.docker.com/mcp/catalog) and Docker Hub. Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.