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@oharness/engine

v0.8.0

Published

The agent loop, tool execution, context management and permissions. No frontend, no transport.

Vulnerabilities

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Links

Git

Maintainers

litboxlitbox

Keywords

agentllmtool-callingmcpanthropicopenaigeminiharness

Readme

@oharness/engine

The agent loop, and everything a frontend does not decide: tool execution, context compaction, permissions, sessions, MCP, and the provider adapters.

Model-agnostic by construction. Anthropic, OpenAI (including any OpenAI-compatible endpoint) and Gemini are all reached over plain fetch with hand-written SSE parsing — no vendor SDKs — and a conversation can change model mid-session without its history being converted, because the history is never stored in a vendor's shape to begin with.

npm install @oharness/engine

One runtime dependency: zod, for tool schemas. Node 22.6+.

import { Harness } from "@oharness/engine";

Frontends live in separate packages — oharness for the terminal, @oharness/server for the browser. This package renders nothing.

Documentation and the full picture: https://github.com/Jet1217/OHarness