oss vs Perplexity API Platform
oss is a plugin bundle for AI coding tools published by Steven Denney. Marketplaces we read that list it: 1 (Community GitHub marketplaces). Perplexity API Platform is an MCP server published by perplexity.ai. Marketplaces we read that list it: 4 (Official MCP Registry, Docker MCP Catalog, npm registry (MCP servers), Community GitHub marketplaces). As of our marketplace pass on 2026-11-14. 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 | |
|---|---|---|
| Community marketplace scdenney/open-science-skills | Listed Version: 2.39.0 Forks (GitHub): 3 Stars (GitHub): 69 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 1.2.1 Downloads/month (npm): 114 404 Downloads/week (npm): 46 103 Not marked · First seen |
| Docker MCP Catalog | Not listed | Listed Version: sha256:7816f45a6f26 Forks (GitHub): 391 Pulls (Docker Hub): 82 027 Stars (Docker Hub): 17 Stars (GitHub): 2 624 Not marked · First seen |
| npm registry (MCP servers) | Not listed | Listed Version: 1.3.0 Downloads/month (npm): 114 404 Downloads/week (npm): 46 103 Forks (GitHub): 391 Stars (GitHub): 2 624 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 | oss | Perplexity API Platform |
|---|---|---|
| Marketplaces that list it (differs) | 1 (worse) | 4 (better) |
| Stars (GitHub) (differs) | 69 (worse) | 2 624 (better) |
| Pulls (Docker Hub) (differs) | No figure on Docker Hub | 82 027 |
| Forks (GitHub) (differs) | 3 (worse) | 391 (better) |
| Last release (differs) | 2026-11-05 (worse) | 2026-11-13 (better) |
| Where it runs (differs) | Installs as a plugin bundle | On your machine (@perplexity-ai/mcp-server) |
| Transport (differs) | Not stated | stdio |
| Tools it declares (differs) | Not published | 3 |
| Environment variables it asks for (differs) | Not published | 2, secrets among them: 1 |
| Hooks it runs (differs) | Not published | 1 |
| Parts of the bundle (differs) | 54 | 2 |
| Licence (differs) | CC-BY-NC-4.0 | MIT |
| Repository (differs) | github.com/scdenney/open-science-skills | github.com/ppl-ai/modelcontextprotocol |
| Changes in the last 7 days (differs) | 0 | 1 |
| First seen (differs) | 2026-11-05 | 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
oss
Open Science Skills — 43 skills for experimental social science: research-repository scaffolding and auditing around a sources/ knowledge base (research-repo), session sitrep and closure for repo hygiene (sitrep, finished), decision-map research planning (research-wayfinder) and a single-sitting research interview for ideas, designs, and drafts (research-grill), conjoint design / cleaning / diagnostics, survey design, list experiments, cross-national design, live Qualtrics operations and pre-fielding audit (qualtrics-ops), fielded-data audit, topic modeling, LLM text-classification design and validation, a three-phase VLM-OCR pipeline (triage, evaluate, run, clean; plus an ALICE-cluster runbook, vlm-ocr-alice), a deliberative GPT-6 Astra and Claude Opus model committee chaired by a premier model that is never a member (Fable by default, Astra via /model-committee-astra), an advisor consult that escalates a working model's decision point to Fable, LLM calibration via token logprobs, citation checking, source-c
Perplexity API Platform
Real-time web search, reasoning, and research through Perplexity's API
How to run each
oss As a Claude Code plugin
/plugin marketplace add scdenney/open-science-skills
/plugin install oss@open-science-skillsPerplexity API Platform As a local MCP server: npm package
claude mcp add --transport stdio perplexity-api-platform -- npx -y @perplexity-ai/mcp-serverCommands built only from what the marketplaces declare; the full set for every client is on each card.
Tools each declares
The marketplaces of oss publish no list of tools, so we do not compare tools.
Settings each asks for
The marketplaces of oss publish no settings it asks for, so we do not compare settings.
What it can do: oss · What it can do: Perplexity API Platform · Compare two other plugins
Data comes from public marketplace files in GitHub repositories of their authors. 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. 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.