Is Cursor or Kiro open source?

Cursor is proprietary. Kiro is proprietary.

Can I reuse Agent Skills between Cursor and Kiro?

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.

Both are proprietary products from their vendors.
Cursor also runs in Web.
Cursor supports AGENTS.md; we have not verified it for Kiro.
Both support MCP, Agent Skills, ACP, so MCP servers, skills and repo instructions you set up carry over if you switch.

Cursor

AI editor and coding agent. Supports MCP, Agent Skills, AGENTS.md, and runs as both an ACP agent and client.

Kiro

Spec-driven agentic IDE and CLI: turns prompts into requirements, designs and tasks before writing code.

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

Reviewed Oct 5, 2026.