Upload-Post vs PostSider
Upload-Post is a plugin bundle for AI coding tools published by mutonby. Marketplaces we read that list it: 1 (Claude Code: claude-plugins-community). PostSider is an MCP server published by lumizone. Marketplaces we read that list it: 2 (Official MCP Registry, Community GitHub marketplaces). 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 |  Upload-Post |  PostSider |
|---|---|---|
| Claude Code: claude-plugins-community | Listed Version: 0.2.0 Forks (GitHub): 0 Stars (GitHub): 1 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 1.0.0 Downloads/month (npm): 374 Downloads/week (npm): 27 Forks (GitHub): 0 Stars (GitHub): 11 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 | Upload-Post | PostSider |
|---|---|---|
| Marketplaces that list it (differs) | 1 (worse) | 2 (better) |
| Stars (GitHub) (differs) | 1 (worse) | 11 (better) |
| Forks (GitHub) | 0 | 0 |
| Last release (differs) | Not published | 2026-10-14 |
| Where it runs (differs) | Remote server (mcp.upload-post.com/mcp) | On your machine (@postsider/mcp) |
| Transport (differs) | Streamable HTTP | stdio |
| Tools it declares | Not published | Not published |
| Environment variables it asks for (differs) | Not published | 2, secrets among them: 1 |
| Parts of the bundle (differs) | 12 | 6 |
| Licence (differs) | MIT | AGPL-3.0 |
| Repository (differs) | github.com/mutonby/upload-post-plugin | github.com/lumizone/postsider |
| Changes in the last 7 days (differs) | 0 | 3 |
| First seen (differs) | 2026-10-12 | 2026-10-11 |
| Endpoint at the last check (differs) | not checked yet | no remote endpoint we check |
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
Upload-Post
Publish to TikTok, Instagram, YouTube, X, LinkedIn, Facebook, Threads, Pinterest, Reddit, Bluesky and Snapchat. Long-form video, short clips, photos, carousels, text, threads, documents and link previews. Schedule cross-platform, repurpose long videos into viral shorts with AI, build Instagram comment-to-DM funnels (AutoDMs), and track analytics. Backed by the Upload-Post MCP server (40+ tools) plus six opinionated skills and three subagents for content strategy, autodm architecture, and upload debugging. Free plan, no credit card required
PostSider
Social media calendar for AI agents: read channels, create drafts, request approval.
How to run each
Upload-Post As a Claude Code plugin
/plugin marketplace add anthropics/claude-plugins-community
/plugin install upload-post@claude-communityPostSider As a local MCP server: npm package
claude mcp add --env "POSTSIDER_API_KEY=<YOUR_POSTSIDER_API_KEY>" --transport stdio postsider -- npx -y @postsider/mcpRequires: POSTSIDER_API_KEY (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
The marketplaces of Upload-Post publish no settings it asks for, so we do not compare settings.
What it can do: Upload-Post · What it can do: PostSider · 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. 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.