Multi-workspace Slack MCP server with draft+confirm safety, vault auto-export, a vs STACK
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: 3 (Official MCP Registry, Community GitHub marketplaces, Claude Code: claude-plugins-community). STACK is an MCP server published by getstack-run. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-10-14. 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 |  Multi-workspace Slack MCP server with draft+confirm safety, vault auto-export, a |  STACK |
|---|---|---|
| Official MCP Registry | Listed Version: 0.1.1 Forks (GitHub): 0 Stars (GitHub): 1 Not marked · First seen |
Listed Version: 1.1.1 No figure published Not marked · First seen |
| Claude Code: claude-plugins-community | Listed Version: 0.1.1 Forks (GitHub): 0 Stars (GitHub): 1 Not marked · First seen |
Not listed |
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 | Multi-workspace Slack MCP server with draft+confirm safety, vault auto-export, a | STACK |
|---|---|---|
| Marketplaces that list it (differs) | 3 (better) | 1 (worse) |
| Stars (GitHub) (differs) | 1 | No figure on GitHub |
| Forks (GitHub) (differs) | 0 | No figure on GitHub |
| Last release | Not published | Not published |
| Where it runs (differs) | On your machine (https://github.com/adelaidasofia/slack-mcp/releases/download/v0.1.1/slack-mcp.mcpb) | Remote server (mcp.getstack.run/mcp) |
| Transport (differs) | stdio | Streamable HTTP |
| Tools it declares | Not published | Not published |
| Environment variables it asks for (differs) | 1, secrets among them: 1 | Not published |
| Hooks it runs (differs) | 1 | Not published |
| Parts of the bundle (differs) | 2 | Not a bundle |
| Licence | Not stated | Not stated |
| Repository (differs) | github.com/adelaidasofia/slack-mcp | github.com/getstack-run/stack |
| Changes in the last 7 days (differs) | 2 | 0 |
| First seen | 2026-10-11 | 2026-10-11 |
| Endpoint at the last check (differs) | no remote endpoint we check | not checked yet |
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
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…
STACK
Command your AI agents: verifiable passports, credential injection, full audit, revoke in 60s.
How to run each
Multi-workspace Slack MCP server with draft+confirm safety, vault auto-export, a As a Claude Code plugin
/plugin marketplace add adelaidasofia/slack-mcp
/plugin install slack-mcp@slack-mcpRequires: SLACK_XOXC_TOKEN (secret)
STACK As a remote MCP server
claude mcp add --transport http stack https://mcp.getstack.run/mcpCommands 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
The marketplaces of STACK publish no settings it asks for, so we do not compare settings.
What it can do: Multi-workspace Slack MCP server with draft+confirm safety, vault auto-export, a · What it can do: STACK · Compare two other plugins
Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Data comes from public marketplace files in GitHub repositories of their authors. Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-community/blob/HEAD/.claude-plugin/marketplace.json. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.