$ find your agent harness

A curated, verified, cross-vendor directory of AI agent harnesses — the runtime scaffolding that turns a model into an agent.

◆ 74 harnesses profiled · 9-axis capability schema · last verified 2026-07-08

2 of 74 harnesses · sorted by stars

Sweep (issue-to-PR agent) · Sweep AI

★ 7,700 · medium

An early (2023-era) open-source background agent that turned labeled GitHub issues into pull requests by planning, coding and opening a PR asynchronously; the original bot is effectively sunset — the repo README redirects to the company's pivot into a proprietary JetBrains AI plugin (autocomplete + in-IDE agent, $10-60/mo) using Sweep's own LLMs, so the background-agent product itself is legacy.

Cloud / backgroundopen-sourcefreemium⛨ cloud-remote

Genspark Super Agent (+ Genspark Claw) · Genspark (MainFunc Inc.)

medium

Credit-based all-in-one 'AI employee' workspace whose Super Agent mixes multiple frontier models with 80+ tools to produce slides, sheets, sites, and calls, and whose 2026 'Genspark Claw' gives each user a persistent cloud computer commandable from WhatsApp/Telegram/Slack/Teams.

General / computer-useproprietaryfreemium⛨ cloud-remote