channel-mattermost vs chat-tool-ui-preview
channel-mattermost is a plugin bundle for AI coding tools published by todd-chamberlain. Marketplaces we read that list it: 1 (Claude Code: claude-plugins-community). chat-tool-ui-preview is an MCP server published by gridhra. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-11-06. 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 |  channel-mattermost |  chat-tool-ui-preview |
|---|---|---|
| Claude Code: claude-plugins-community | Listed Version: 0.0.1 Forks (GitHub): 1 Stars (GitHub): 1 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 0.1.1 Forks (GitHub): 0 (last published figure) Stars (GitHub): 0 (last published figure) 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 | channel-mattermost | chat-tool-ui-preview |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 1 | 0 (last published figure) |
| Forks (GitHub) (differs) | 1 | 0 (last published figure) |
| Last release | Not published | Not published |
| Where it runs (differs) | Installs as a plugin bundle | On your machine (https://github.com/gridhra/chat-tool-ui-preview/releases/download/v0.1.1/chat-preview_0.1.1_darwin_arm64.mcpb) |
| Transport (differs) | Not stated | stdio |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Parts of the bundle (differs) | 3 | Not a bundle |
| Licence | Not stated | Not stated |
| Repository (differs) | github.com/todd-chamberlain/claude-channel-mattermost | github.com/gridhra/chat-tool-ui-preview |
| Changes in the last 7 days | 0 | 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
channel-mattermost
Mattermost channel for Claude Code — two-way messaging bridge with built-in access control for self-hosted Mattermost instances. Manage pairing, allowlists, and policy via /mattermost:access
chat-tool-ui-preview
Preview a chat post before an agent sends it: text, mentions, destination, warnings. Never sends.
How to run each
channel-mattermost As a Claude Code plugin
/plugin marketplace add anthropics/claude-plugins-community
/plugin install channel-mattermost@claude-communitychat-tool-ui-preview
No data for an automatic command: what its marketplaces declare does not say unambiguously how to connect it.
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
Neither one's marketplaces publish the settings it asks for.
What it can do: channel-mattermost · What it can do: chat-tool-ui-preview · Compare two other plugins
Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-community/blob/HEAD/.claude-plugin/marketplace.json. 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.