AtlaSent MCP Server vs Multi-workspace Slack MCP server with draft+confirm safety, vault auto-export, a
AtlaSent MCP Server is an MCP server published by AtlaSent. Marketplaces we read that list it: 1 (Official MCP Registry). Multi-workspace Slack MCP server with draft+confirm safety, vault auto-export, a is an MCP server published by adelaidasofia. Marketplaces we read that list it: 2 (Official MCP Registry, Claude Code: claude-plugins-community). As of our marketplace pass on 2026-10-26. 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 |  AtlaSent MCP Server |  Multi-workspace Slack MCP server with draft+confirm safety, vault auto-export, a |
|---|---|---|
| Official MCP Registry | Listed Version: 2.20.0 Downloads/month (npm): 1 803 Downloads/week (npm): 97 Forks (GitHub): 0 Stars (GitHub): 0 Not marked · First seen |
Listed Version: 0.1.1 Forks (GitHub): 0 Stars (GitHub): 2 Not marked · First seen |
| Claude Code: claude-plugins-community | Not listed | Listed Version: 0.1.1 Forks (GitHub): 0 Stars (GitHub): 2 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 | AtlaSent MCP Server | Multi-workspace Slack MCP server with draft+confirm safety, vault auto-export, a |
|---|---|---|
| Marketplaces that list it (differs) | 1 (worse) | 2 (better) |
| Stars (GitHub) (differs) | 0 (worse) | 2 (better) |
| Forks (GitHub) | 0 | 0 |
| Last release (differs) | 2026-10-20 | Not published |
| Where it runs (differs) | On your machine (@atlasent/mcp-server) | On your machine (https://github.com/adelaidasofia/slack-mcp/releases/download/v0.1.1/slack-mcp.mcpb) |
| Transport | stdio | stdio |
| Tools it declares | Not published | Not published |
| Environment variables it asks for (differs) | 3, secrets among them: 1 | 1, secrets among them: 1 |
| Hooks it runs (differs) | Not published | 1 |
| Parts of the bundle (differs) | Not a bundle | 2 |
| Licence | Not stated | Not stated |
| Repository (differs) | github.com/atlasent/atlasent-mcp-server | github.com/adelaidasofia/slack-mcp |
| Changes in the last 7 days (differs) | 1 | 0 |
| First seen | 2026-10-11 | 2026-10-11 |
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
AtlaSent MCP Server
AtlaSent for AI agents: with an API key, actions wait for approval with signed proof. No key: demo.
Multi-workspace Slack MCP server with draft+confirm safety, vault auto-export, a
Multi-workspace Slack MCP server with draft+confirm safety, vault auto-export, and triple-mode…
How to run each
AtlaSent MCP Server As a local MCP server: npm package
claude mcp add --env "ATLASENT_API_KEY=<YOUR_ATLASENT_API_KEY>" --transport stdio atlasent-mcp-server -- npx -y @atlasent/mcp-serverRequires: ATLASENT_API_KEY (secret)
Multi-workspace Slack MCP server with draft+confirm safety, vault auto-export, a As a Claude Code plugin
/plugin marketplace add anthropics/claude-plugins-community
/plugin install slack-mcp@claude-communityRequires: SLACK_XOXC_TOKEN (secret)
Commands built only from what the marketplaces declare; the full set for every client is on each card.
Tools each declares
Neither one's marketplaces publish a list of tools, so there is nothing to compare.
Settings each asks for
Only AtlaSent MCP Server asks for
ATLASENT_API_KEY (secret)ATLASENT_BASE_URLATLASENT_MODE
Only Multi-workspace Slack MCP server with draft+confirm safety, vault auto-export, a asks for
SLACK_XOXC_TOKEN (secret)
Settings as each marketplace publishes them. Asking for fewer is not better in itself.
What it can do: AtlaSent MCP Server · What it can do: Multi-workspace Slack MCP server with draft+confirm safety, vault auto-export, a · Compare two other plugins
Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-community/blob/HEAD/.claude-plugin/marketplace.json. Data comes from public marketplace files in GitHub repositories of their authors. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.