open-harness: A code-first, composable SDK to build powerful AI agents

by MaxGfeller · MCP Server · ★ 594

Last updated: · Indexed by AgentSkillsHub · Auto-synced every 8h

How to install open-harness

npm install @openharness/core @ai-sdk/openai
git clone https://github.com/MaxGfeller/open-harness.git

Taken from the project's README on GitHub. Check the security audit before running it.

Security audit verdict: SAFE · quality 70/100

None of the 42 rules matched — no credential harvesting, no data exfiltration, no curl-pipe-shell installer. Scanned against 42 published rules built on the SlowMist agent-security taxonomy, refreshed every 8 hours. Full audit →

The quality score combines nine heuristic checks of the repo and its README: completeness, clarity, specificity, examples, structure, agent readiness, step-by-step content, instruction quality and security notes. It rates how well the project explains itself to an agent, not the code.

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Quick Facts

Stars594
Forks98
LanguageTypeScript
CategoryMCP Server
LicenseMIT
Quality Score70/100
Open Issues2
Last Updated2026-07-17
Created2026-02-23
Platformsmcp, node
Est. Tokens~14k

About open-harness

OpenHarness Build capable, general-purpose AI agents in code. Based on Vercel's AI SDK, inspired by Claude Code, Codex, and similar agent harnesses. Documentation Packages Quick Start Multi-Turn with Sessions typescript import { Session } from "@openharness/core"; const session = new Session({ agent, contextWindow: 128000 }); for await (const event of session.send("List all TypeScript files")) {...

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How this security grade is produced

Grades come from a rule-based scan built on the SlowMist agent-security taxonomy: 42 published rules, covering credential harvesting, data exfiltration, curl | sh installers and more. It is a first-layer scan, not a manual audit — we say so rather than overstate it.

The scale of the problem is documented independently: Liu et al. (2026), in a study of 31,132 agent skills, report that 26.1% contain security vulnerabilities. Our own full-catalog census is published as a citable open dataset.

Sources & who's responsible:

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