grainulator vs io.github.ContentWriterco/powietrze-mcp
grainulator is a plugin bundle for AI coding tools published by grainulation. Marketplaces we read that list it: 2 (Claude Code: claude-plugins-community, Community GitHub marketplaces). io.github.ContentWriterco/powietrze-mcp is an MCP server published by ContentWriterco. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-11-07. 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 |  grainulator |  io.github.ContentWriterco/powietrze-mcp |
|---|---|---|
| Claude Code: claude-plugins-community | Listed Version: 1.7.1 Forks (GitHub): 7 Stars (GitHub): 86 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 0.1.1 Downloads/month (npm): 848 Downloads/week (npm): 102 Forks (GitHub): 0 Stars (GitHub): 0 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 | grainulator | io.github.ContentWriterco/powietrze-mcp |
|---|---|---|
| Marketplaces that list it (differs) | 2 (better) | 1 (worse) |
| Stars (GitHub) (differs) | 86 (better) | 0 (worse) |
| Forks (GitHub) (differs) | 7 (better) | 0 (worse) |
| Last release (differs) | 2026-10-25 (better) | 2026-10-23 (worse) |
| Where it runs (differs) | Remote server (mcp.deepwiki.com/mcp) | Remote server (powietrze.compabase.com/mcp) |
| Transport | Streamable HTTP | Streamable HTTP |
| Tools it declares | Not published | Not published |
| Environment variables it asks for (differs) | 1, secrets among them: 0 | Not published |
| Hooks it runs (differs) | 3 | Not published |
| Parts of the bundle (differs) | 26 | Not a bundle |
| Licence (differs) | MIT | Not stated |
| Repository (differs) | github.com/grainulation/grainulator | github.com/contentwriterco/powietrze-mcp |
| Changes in the last 7 days | 0 | 0 |
| First seen (differs) | 2026-10-11 | 2026-10-22 |
| Endpoint at the last check (differs) | Responded 15 h ago | Status out of date: last check 2 days ago returned HTTP 405 |
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
grainulator
Research sprint orchestrator for Claude Code. Ask a question, get a decision-ready brief — every finding is tracked as a typed claim, adversarially challenged, confidence-graded, and compiled into self-contained HTML output. Zero dependencies, MIT licensed.
io.github.ContentWriterco/powietrze-mcp
Air quality in Poland: live GIOŚ measurements, smog warnings, CAMS forecast and pollen
How to run each
grainulator As a Claude Code plugin
/plugin marketplace add anthropics/claude-plugins-community
/plugin install grainulator@claude-communityio.github.ContentWriterco/powietrze-mcp As a remote MCP server
claude mcp add --transport http powietrze-mcp https://powietrze.compabase.com/mcpCommands built only from what the marketplaces declare; the full set for every client is on each card.
Both endpoints responded at the last daily check. How we check endpoints
Tools each declares
Neither the marketplaces of grainulator nor its endpoint list any tools, so we do not compare tools.
Settings each asks for
The marketplaces of io.github.ContentWriterco/powietrze-mcp publish no settings it asks for, so we do not compare settings.
What it can do: grainulator · What it can do: io.github.ContentWriterco/powietrze-mcp · Compare two other plugins
Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-community/blob/HEAD/.claude-plugin/marketplace.json. 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. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.