Cursor SDK vs Chrome Extension Builder
Cursor SDK is a plugin bundle for AI coding tools published by Cursor. Marketplaces we read that list it: 1 (Cursor: cursor/plugins). Chrome Extension Builder is a plugin bundle for AI coding tools published by harry-harish. Marketplaces we read that list it: 1 (Claude Code: claude-plugins-community). As of our marketplace pass on 2026-10-13. 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 |  Chrome Extension Builder | |
|---|---|---|
| Cursor: cursor/plugins | Listed Version: 1.0.0 Forks (GitHub): 1 066 Stars (GitHub): 11 026 Not marked · First seen |
Not listed |
| Claude Code: claude-plugins-community | Not listed | Listed Version: 1.4.0 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 | Cursor SDK | Chrome Extension Builder |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 11 026 (better) | 1 (worse) |
| Forks (GitHub) (differs) | 1 066 (better) | 0 (worse) |
| Last release | Not published | Not published |
| Where it runs | Installs as a plugin bundle | Installs as a plugin bundle |
| Transport | Not stated | Not stated |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Hooks it runs (differs) | Not published | 3 |
| Parts of the bundle (differs) | 1 | 19 |
| Licence | MIT | MIT |
| Repository (differs) | github.com/cursor/plugins | github.com/harry-harish/chrome-extension-builder |
| 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
Cursor SDK
Build apps, scripts, and automations with the TypeScript SDK.
Chrome Extension Builder
Use when scaffolding, validating, testing, or publishing a Manifest V3 Chrome/Edge/Firefox extension. Builds end-to-end with WXT, Plasmo, or CRXJS — service-worker dispatcher, typed message passing, strict CSP, _locales/ i18n, Playwright smoke harness, Chrome Web Store submission prep.
How to run each
Cursor SDK
No data for an automatic command: what its marketplaces declare does not say unambiguously how to connect it.
Chrome Extension Builder As a Claude Code plugin
/plugin marketplace add anthropics/claude-plugins-community
/plugin install chrome-extension-builder@claude-communityCommands 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: Cursor SDK · What it can do: Chrome Extension Builder · Compare two other plugins
Data comes from the public marketplace file https://github.com/cursor/plugins/blob/HEAD/.cursor-plugin/marketplace.json. Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-community/blob/HEAD/.claude-plugin/marketplace.json. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.