4chems Platform — IUCLID, CHESAR & QSAR Toolbox hosting vs io.github.JonasRackl/labmate-mcp
4chems Platform — IUCLID, CHESAR & QSAR Toolbox hosting is an MCP server published by 4chems.com. Marketplaces we read that list it: 1 (Official MCP Registry). io.github.JonasRackl/labmate-mcp is an MCP server published by JonasRackl. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-10-21. 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 |  4chems Platform — IUCLID, CHESAR & QSAR Toolbox hosting |  io.github.JonasRackl/labmate-mcp |
|---|---|---|
| Official MCP Registry | Listed Version: 0.12.1 Forks (GitHub): 0 Stars (GitHub): 0 Not marked · First seen |
Listed Version: 7.3.1 Downloads/month (PyPI): 156 Downloads/week (PyPI): 25 Forks (GitHub): 0 Stars (GitHub): 3 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 | 4chems Platform — IUCLID, CHESAR & QSAR Toolbox hosting | io.github.JonasRackl/labmate-mcp |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 0 (worse) | 3 (better) |
| Forks (GitHub) | 0 | 0 |
| Last release | Not published | Not published |
| Where it runs (differs) | Remote server (mcp.4chems.com/mcp) | On your machine (labmate-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: 2 |
| Licence | Not stated | Not stated |
| Repository (differs) | github.com/4chems/mcp | github.com/jonasrackl/labmate-mcp |
| Changes in the last 7 days | 0 | 0 |
| First seen | 2026-10-11 | 2026-10-11 |
| Endpoint at the last check (differs) | Responded 2 days ago | 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
4chems Platform — IUCLID, CHESAR & QSAR Toolbox hosting
Remote MCP server for 4chems hosted IUCLID, CHESAR and QSAR Toolbox: onboarding, inquiries, admin.
io.github.JonasRackl/labmate-mcp
81 chemistry tools — literature, calculations, retrosynthesis
How to run each
4chems Platform — IUCLID, CHESAR & QSAR Toolbox hosting As a remote MCP server
claude mcp add --transport http platform-api https://mcp.4chems.com/mcpio.github.JonasRackl/labmate-mcp As a local MCP server: PyPI package
claude mcp add --env "ROWAN_API_KEY=<YOUR_ROWAN_API_KEY>" --env "RXN_API_KEY=<YOUR_RXN_API_KEY>" --transport stdio labmate-mcp -- uvx labmate-mcpRequires: ROWAN_API_KEY (secret), RXN_API_KEY (secret)
Commands built only from what the marketplaces declare; the full set for every client is on each card.
Only 4chems Platform — IUCLID, CHESAR & QSAR Toolbox hosting has a remote endpoint we check. How we check endpoints
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 4chems Platform — IUCLID, CHESAR & QSAR Toolbox hosting publish no settings it asks for, so we do not compare settings.
What it can do: 4chems Platform — IUCLID, CHESAR & QSAR Toolbox hosting · What it can do: io.github.JonasRackl/labmate-mcp · Compare two other plugins
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.