io.github.polygraphso/litmus vs io.github.soufianetahiri/mception
io.github.polygraphso/litmus is an MCP server published by polygraphso. Marketplaces we read that list it: 1 (Official MCP Registry). io.github.soufianetahiri/mception is an MCP server published by soufianetahiri. 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 |  io.github.polygraphso/litmus | |
|---|---|---|
| Official MCP Registry | Listed Version: 0.36.0 Downloads/month (npm): 339 Downloads/week (npm): 30 Forks (GitHub): 0 Stars (GitHub): 8 Not marked · First seen |
Listed Version: 0.5.2 Downloads/month (PyPI): 78 Downloads/week (PyPI): 25 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 | io.github.polygraphso/litmus | io.github.soufianetahiri/mception |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 8 | No figure on GitHub |
| Forks (GitHub) (differs) | 0 | No figure on GitHub |
| Last release | Not published | Not published |
| Where it runs (differs) | Remote server (polygraph.so/api/mcp) | On your machine (mception) |
| Transport (differs) | Streamable HTTP | stdio |
| Tools it declares | Not published | Not published |
| Environment variables it asks for (differs) | 2, secrets among them: 0 | 4, secrets among them: 0 |
| Licence | Not stated | Not stated |
| Repository (differs) | github.com/polygraphso/litmus | Not stated |
| Changes in the last 7 days | 0 | 0 |
| First seen | 2026-10-11 | 2026-10-11 |
| Endpoint at the last check (differs) | Answered with HTTP 308 (4 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
io.github.polygraphso/litmus
Grade MCP servers A to F with the open behavioral litmus. npm: full toolset; hosted: lookups only.
io.github.soufianetahiri/mception
Audits other MCP servers for security risks. Returns safe / caution / unsafe / inconclusive.
How to run each
io.github.polygraphso/litmus As a remote MCP server
claude mcp add --transport http litmus https://polygraph.so/api/mcpio.github.soufianetahiri/mception As a local MCP server: PyPI package
claude mcp add --transport stdio mception -- uvx mceptionCommands built only from what the marketplaces declare; the full set for every client is on each card.
Only io.github.polygraphso/litmus 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
Only io.github.polygraphso/litmus asks for
NEXT_PUBLIC_POLYGRAPH_NETWORKPOLYGRAPH_API_URL
Only io.github.soufianetahiri/mception asks for
MCEPTION_DATA_DIRMCEPTION_ENABLE_LLM_JUDGEMCEPTION_INTROSPECT_TIMEOUTMCEPTION_OFFLINE
Settings as each marketplace publishes them. Asking for fewer is not better in itself.
What it can do: io.github.polygraphso/litmus · What it can do: io.github.soufianetahiri/mception · 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.