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Best GitHub Copilot Extensions for engineering

GitHub Copilot Extensions indexed for engineering teams. Every listing carries the Skill Score we compute identically across every platform — see how each one stacks up.

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3 / 4

Copilot

7.5

Copilot Extensions Preview SDK (JS)

Official JavaScript SDK that handles request verification, response formatting, and prompt streaming for Copilot Extensions.

Engineering and DevelopmentGitHub copilot-extensions

Copilot

7.2

Blackbeard Copilot Extension

Reference Copilot Extension that responds in the voice of Blackbeard the pirate — the canonical Hello World starter.

Engineering and DevelopmentGitHub copilot-extensions

Copilot

7.0

RAG Copilot Extension

Reference Go-based Copilot Extension demonstrating retrieval-augmented generation patterns over a custom corpus.

Engineering and DevelopmentGitHub copilot-extensions

4 skills

Copilot

6.7

Function Calling Copilot Extension

Reference Go-based Copilot Extension that demonstrates function calling with confirmation dialogs — issue creation and listing as worked examples.

Engineering and DevelopmentGitHub copilot-extensions