Perplexity API Platform vs Federal Regulations
Perplexity API Platform is an MCP server published by perplexity.ai. Marketplaces we read that list it: 3 (Official MCP Registry, Docker MCP Catalog, Community GitHub marketplaces). Federal Regulations is an MCP server published by stark256-spec. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-10-17. 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 |   Perplexity API Platform | |
|---|---|---|
| Official MCP Registry | Listed Version: 1.2.1 Downloads/month (npm): 102 467 Downloads/week (npm): 16 084 Not marked · First seen |
Listed Version: 0.1.0 Downloads/month (PyPI): 62 Downloads/week (PyPI): 17 Not marked · First seen |
| Docker MCP Catalog | Listed Version: sha256:7816f45a6f26 Forks (GitHub): 382 Pulls (Docker Hub): 80 283 Stars (Docker Hub): 17 Stars (GitHub): 2 576 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 | Perplexity API Platform | Federal Regulations |
|---|---|---|
| Marketplaces that list it (differs) | 3 (better) | 1 (worse) |
| Stars (GitHub) (differs) | 2 576 | No figure on GitHub |
| Pulls (Docker Hub) (differs) | 80 283 | No figure on Docker Hub |
| Forks (GitHub) (differs) | 382 | No figure on GitHub |
| Last release (differs) | 2026-10-17 | Not published |
| Where it runs (differs) | On your machine (@perplexity-ai/mcp-server) | On your machine (regulations-mcp) |
| Transport | stdio | stdio |
| Tools it declares (differs) | 3 | Not published |
| Environment variables it asks for (differs) | 2, secrets among them: 1 | 1, secrets among them: 1 |
| Parts of the bundle (differs) | 1 | Not a bundle |
| Licence (differs) | MIT | Not stated |
| Repository (differs) | github.com/ppl-ai/modelcontextprotocol | Not stated |
| Changes in the last 7 days (differs) | 4 | 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
Perplexity API Platform
Real-time web search, reasoning, and research through Perplexity's API
Federal Regulations
Search the Federal Register, read & diff CFR sections, query Regulations.gov. Any LLM supported.
How to run each
Perplexity API Platform As a local MCP server: npm package
claude mcp add --transport stdio perplexity-api-platform -- npx -y @perplexity-ai/mcp-serverFederal Regulations As a local MCP server: PyPI package
claude mcp add --env "REGULATIONS_GOV_API_KEY=<YOUR_REGULATIONS_GOV_API_KEY>" --transport stdio regulations-mcp -- uvx regulations-mcpRequires: REGULATIONS_GOV_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 Federal Regulations publish no list of tools, so we do not compare tools.
Settings each asks for
Only Perplexity API Platform asks for
PERPLEXITY_API_KEY (secret)PERPLEXITY_TIMEOUT_MS
Only Federal Regulations asks for
REGULATIONS_GOV_API_KEY (secret)
Settings as each marketplace publishes them. Asking for fewer is not better in itself.
What it can do: Perplexity API Platform · What it can do: Federal Regulations · Compare two other plugins
Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Data comes from the Docker MCP Catalog (desktop.docker.com/mcp/catalog) and Docker Hub. 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.