harness-agents
Installation
SKILL.md
Harness Agents
Rule
Full agent harnesses are not AgentEngine providers. Use the AgentHarness
substrate in @agent-native/core/agent/harness.
Why
AgentEngine is for one model round trip beneath runAgentLoop. Harnesses like
Claude Code, Codex, Pi, Cursor, and Mastra own their own loop, workspace,
native tools, session state, compaction, approval model, and sandbox behavior.
Putting a harness under AgentEngine.stream() double-runs the loop and loses
session lifecycle semantics.
How
- Register or resolve a harness adapter.