Is GitHub Copilot or OpenCode open source?

GitHub Copilot is proprietary. OpenCode is open source under MIT.

Do GitHub Copilot and OpenCode support MCP servers?

GitHub Copilot: yes. OpenCode: yes.

Yes. Both read the open Agent Skills (SKILL.md) format, so the same skill folder works in both.

Comparison

How the two compare on the things that decide whether your setup carries over: open standards, license, models and where they run.

	GitHub Copilot	OpenCode
Maker	GitHub / Microsoft	Anomaly (SST)
License	Proprietary	MIT
Models	See vendor docs	75+ providers, including local models
Runs in	IDE, GitHub, CLI	Terminal, IDE, Desktop
MCP	MCP: supported	MCP: supported
Agent Skills	Agent Skills: supported	Agent Skills: supported
AGENTS.md	AGENTS.md: supported	AGENTS.md: supported
ACP	ACP: supported	ACP: supported

OpenCode is open source (MIT); GitHub Copilot is proprietary. If you need to self-host, audit or fork the harness, that settles it.
GitHub Copilot also runs in GitHub, CLI; OpenCode also runs in Terminal, Desktop.
Both support MCP, Agent Skills, AGENTS.md, ACP, so MCP servers, skills and repo instructions you set up carry over if you switch.

GitHub Copilot

Copilot's coding agent and VS Code agent mode. Agent Skills, AGENTS.md and MCP are supported; ACP support is in public preview.

OpenCode

Provider-agnostic open-source coding agent for terminal, IDE and desktop. Works with 75+ model providers, including local models.

Is GitHub Copilot or OpenCode open source?: GitHub Copilot is proprietary. OpenCode is open source under MIT.
Do GitHub Copilot and OpenCode support MCP servers?: GitHub Copilot: yes. OpenCode: yes.
Can I reuse Agent Skills between GitHub Copilot and OpenCode?: Yes. Both read the open Agent Skills (SKILL.md) format, so the same skill folder works in both.

Reviewed Oct 5, 2026.