Qiskit MCP Server vs pqc-scan
Qiskit MCP Server is an MCP server published by Qiskit. Marketplaces we read that list it: 2 (Official MCP Registry, PyPI (MCP servers)). pqc-scan is an MCP server published by microtoll. Marketplaces we read that list it: 2 (Official MCP Registry, npm registry (MCP servers)). As of our marketplace pass on 2026-10-28. 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 |  Qiskit MCP Server |  pqc-scan |
|---|---|---|
| Official MCP Registry | Listed Version: 0.3.2 Downloads/month (PyPI): 1 552 Downloads/week (PyPI): 786 Forks (GitHub): 21 Stars (GitHub): 41 Not marked · First seen |
Listed Version: 0.3.3 Downloads/month (npm): 1 230 Downloads/week (npm): 110 Forks (GitHub): 0 Stars (GitHub): 1 Not marked · First seen |
| PyPI (MCP servers) | Listed Version: 0.3.2 Downloads/month (PyPI): 1 552 Downloads/week (PyPI): 786 Forks (GitHub): 21 Stars (GitHub): 41 Not marked · First seen |
Not listed |
| npm registry (MCP servers) | Not listed | Listed Version: 0.3.3 Downloads/month (npm): 1 230 Downloads/week (npm): 110 Forks (GitHub): 0 Stars (GitHub): 1 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 | Qiskit MCP Server | pqc-scan |
|---|---|---|
| Marketplaces that list it | 2 | 2 |
| Stars (GitHub) (differs) | 41 (better) | 1 (worse) |
| Forks (GitHub) (differs) | 21 (better) | 0 (worse) |
| Last release | Not published | Not published |
| Where it runs (differs) | On your machine (qiskit-mcp-server) | On your machine (@microtoll/pqc-scan) |
| Transport | stdio | stdio |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Licence | Apache-2.0 | Apache-2.0 |
| Repository (differs) | github.com/qiskit/mcp-servers | github.com/microtoll/pqc-scan |
| 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
Qiskit MCP Server
MCP server for Qiskit quantum computing with circuit serialization utilities
pqc-scan
The cryptography a JavaScript or TypeScript codebase uses, and which a quantum computer would break.
How to run each
Qiskit MCP Server As a local MCP server: PyPI package
claude mcp add --transport stdio qiskit-mcp-server -- uvx qiskit-mcp-serverpqc-scan As a local MCP server: npm package
claude mcp add --transport stdio pqc-scan -- npx -y @microtoll/pqc-scan mcpCommands 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: Qiskit MCP Server · What it can do: pqc-scan · Compare two other plugins
Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Package data comes from the Python Package Index (pypi.org). Package data comes from the public npm registry (registry.npmjs.org). Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.