Is Hermes Agent or Kiro open source?

Hermes Agent is open source. Kiro is proprietary.

Do Hermes Agent and Kiro support MCP servers?

Hermes Agent: not verified yet. Kiro: 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.

	Hermes Agent	Kiro
Maker	Nous Research	AWS
License	Open source	Proprietary
Models	Model-agnostic: hosted or local models	See vendor docs
Runs in	Terminal, Desktop, Messaging	IDE, CLI
MCP	?MCP: not yet verified	MCP: supported
Agent Skills	Agent Skills: supported	Agent Skills: supported
AGENTS.md	?AGENTS.md: not yet verified	?AGENTS.md: not yet verified
ACP	ACP: supported	ACP: supported

Hermes Agent is open source; Kiro is proprietary. If you need to self-host, audit or fork the harness, that settles it.
Hermes Agent also runs in Terminal, Desktop, Messaging; Kiro also runs in IDE, CLI.
Kiro supports MCP; we have not verified it for Hermes Agent.
Both support Agent Skills, ACP, so MCP servers, skills and repo instructions you set up carry over if you switch.

Hermes Agent

Model-agnostic personal agent across CLI, desktop and messaging apps. Learns across sessions and writes reusable skills from its own work.

Kiro

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

Is Hermes Agent or Kiro open source?: Hermes Agent is open source. Kiro is proprietary.
Do Hermes Agent and Kiro support MCP servers?: Hermes Agent: not verified yet. Kiro: yes.
Can I reuse Agent Skills between Hermes Agent and Kiro?: Yes. Both read the open Agent Skills (SKILL.md) format, so the same skill folder works in both.

Reviewed Oct 5, 2026.