Paper Search vs Data Aggregator
Paper Search is an MCP server published by openags. Marketplaces we read that list it: 1 (Docker MCP Catalog). Data Aggregator is an MCP server published by musharna. Marketplaces we read that list it: 2 (Official MCP Registry, PyPI (MCP servers)). As of our marketplace pass on 2026-10-23. 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 |  Paper Search |  Data Aggregator |
|---|---|---|
| Docker MCP Catalog | Listed Version: sha256:19d0af269a55 Forks (GitHub): 300 Pulls (Docker Hub): 45 762 Stars (Docker Hub): 5 Stars (GitHub): 2 896 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 0.75.4 Downloads/month (PyPI): 17 008 Downloads/week (PyPI): 1 633 Forks (GitHub): 0 Stars (GitHub): 4 Not marked · First seen |
| PyPI (MCP servers) | Not listed | Listed Version: 0.75.4 Downloads/month (PyPI): 17 008 Downloads/week (PyPI): 1 633 Forks (GitHub): 0 Stars (GitHub): 4 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 | Paper Search | Data Aggregator |
|---|---|---|
| Marketplaces that list it (differs) | 1 (worse) | 2 (better) |
| Stars (GitHub) (differs) | 2 896 (better) | 4 (worse) |
| Pulls (Docker Hub) (differs) | 45 762 | No figure on Docker Hub |
| Forks (GitHub) (differs) | 300 (better) | 0 (worse) |
| Last release (differs) | Not published | 2026-10-20 |
| Where it runs (differs) | On your machine (mcp/paper-search) | On your machine (data-aggregator-mcp) |
| Transport | stdio | stdio |
| Tools it declares (differs) | 57 | Not published |
| Environment variables it asks for (differs) | Not published | 12, secrets among them: 4 |
| Licence | MIT | MIT |
| Repository (differs) | github.com/openags/paper-search-mcp | github.com/musharna/data-aggregator-mcp |
| Changes in the last 7 days (differs) | 0 | 14 |
| 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
Paper Search
MCP, CLI, Skills for searching and downloading academic papers from multiple sources like arXiv, PubMed, bioRxiv, etc.
Data Aggregator
Find & fetch research datasets across 21 archives, omics registries, and literature sources.
How to run each
Paper Search As a local MCP server: Docker image
claude mcp add --transport stdio paper-search -- docker run -i --rm mcp/paper-searchData Aggregator As a local MCP server: PyPI package
claude mcp add --env "DATA_GOV_API_KEY=<YOUR_DATA_GOV_API_KEY>" --env "EMBEDDING_API_KEY=<YOUR_EMBEDDING_API_KEY>" --env "LLM_API_KEY=<YOUR_LLM_API_KEY>" --env "NCBI_API_KEY=<YOUR_NCBI_API_KEY>" --transport stdio data-aggregator-mcp -- uvx data-aggregator-mcpRequires: DATA_GOV_API_KEY (secret), EMBEDDING_API_KEY (secret), LLM_API_KEY (secret), NCBI_API_KEY (secret)
Commands built only from what the marketplaces declare; the full set for every client is on each card.
Tools each declares
The marketplaces of Data Aggregator publish no list of tools, so we do not compare tools.
Settings each asks for
The marketplaces of Paper Search publish no settings it asks for, so we do not compare settings.
What it can do: Paper Search · What it can do: Data Aggregator · Compare two other plugins
Data comes from the Docker MCP Catalog (desktop.docker.com/mcp/catalog) and Docker Hub. Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Package data comes from the Python Package Index (pypi.org). Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.