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Copilot Extensions Preview SDK (JS) vs RAG Copilot Extension

Copilot Extensions Preview SDK (JS) (7.5/10) wins on maintenance and adoption; RAG Copilot Extension (7.0/10) holds its own.

Both are scored on the same rubric (safety 35%, maintenance 25%, documentation 20%, adoption 20%) so every comparison below is apples-to-apples. How we score.

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Copilot Extensions Preview SDK (JS)

Choose Copilot Extensions Preview SDK (JS) if you weight maintenance and adoption most.

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RAG Copilot Extension

RAG Copilot Extension doesn't decisively win any single dimension, but holds its own against Copilot Extensions Preview SDK (JS) on every axis.

Effectively tied on: safety, documentation.

Detailed comparison of Copilot Extensions Preview SDK (JS) versus RAG Copilot Extension across Skill Score, ratings, platforms, vendor, category, license, and repo health.
DimensionCopilot Extensions Preview SDK (JS)GitHub copilot-extensionsRAG Copilot ExtensionGitHub copilot-extensions
Skill score (overall)7.57.0
Safety sub-score95/10095/100
Maintenance sub-score54/10041/100
Documentation sub-score88/10087/100
Adoption sub-score52/10046/100
Community ratingNo ratings yetNo ratings yet
Platforms
Copilot
Copilot
Primary platformGitHub Copilot ExtensionsGitHub Copilot Extensions
VendorGitHub copilot-extensionsGitHub copilot-extensions
Primary categoryEngineering and DevelopmentEngineering and Development
LicenseMITMIT
GitHub stars8797
Last commit3 months ago10 months ago
Last verifiedMay 24, 2026May 24, 2026
Open flagsNoneNone