zoominfo vs SiteCheck
zoominfo is a plugin bundle for AI coding tools published by Zoominfo. Marketplaces we read that list it: 4 (Claude Code: claude-plugins-official, Official MCP Registry, Claude: knowledge-work-plugins, Community GitHub marketplaces). SiteCheck is an MCP server published by bck-stack. 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 |  zoominfo |  SiteCheck |
|---|---|---|
| Claude Code: claude-plugins-official | Listed Version: 1.0.1 Forks (GitHub): 6 Stars (GitHub): 8 Not marked · First seen |
Not listed |
| Official MCP Registry | Listed Version: 1.0.1 Forks (GitHub): 6 Stars (GitHub): 8 Not marked · First seen |
Listed Version: 1.5.0 Forks (GitHub): 0 Stars (GitHub): 1 Not marked · First seen |
| Claude: knowledge-work-plugins | Listed Version: 1.0.1 Forks (GitHub): 6 Stars (GitHub): 8 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 | zoominfo | SiteCheck |
|---|---|---|
| Marketplaces that list it (differs) | 4 (better) | 1 (worse) |
| Stars (GitHub) (differs) | 8 (better) | 1 (worse) |
| Forks (GitHub) (differs) | 6 (better) | 0 (worse) |
| Last release (differs) | Not published | 2026-10-14 |
| Where it runs (differs) | Remote server (mcp.zoominfo.com/mcp) | Remote server (api.sitecheck-api.workers.dev/mcp) |
| Transport | Streamable HTTP | Streamable HTTP |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Parts of the bundle (differs) | 36 | Not a bundle |
| Licence (differs) | MIT | Not stated |
| Repository (differs) | github.com/zoominfo/zoominfo-mcp-plugin | github.com/bck-stack/sitecheck-x402 |
| Changes in the last 7 days (differs) | 3 | 6 |
| First seen | 2026-10-11 | 2026-10-11 |
| Endpoint at the last check (differs) | not checked yet | Responded 15 h ago |
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
zoominfo
Search companies and contacts, enrich leads, find lookalikes, and get AI-ranked contact recommendations. Pre-built skills chain multiple ZoomInfo tools into complete B2B sales workflows.
SiteCheck
132 pay-per-call agent tools: chain reads, DeFi, web, SEO, OCR, SEC, KYB, geo, dev data, AI. x402
How to run each
zoominfo As a Claude Code plugin
/plugin install zoominfo@claude-plugins-officialRequires: Authorization header
SiteCheck As a remote MCP server
claude mcp add --transport http sitecheck https://api.sitecheck-api.workers.dev/mcpCommands built only from what the marketplaces declare; the full set for every client is on each card.
Only SiteCheck has a remote endpoint we check. How we check endpoints
Tools each declares
Neither the marketplaces of zoominfo nor its endpoint list any tools, so we do not compare tools.
Settings each asks for
Neither one's marketplaces publish the settings it asks for.
What it can do: zoominfo · What it can do: SiteCheck · Compare two other plugins
Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-official/blob/HEAD/.claude-plugin/marketplace.json. Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Data comes from the public marketplace file https://github.com/anthropics/knowledge-work-plugins/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.