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Toolly

Hybrid Harness Engine

Four AI agents work as one team — designing, building, and verifying automatically. Install the entire multi-agent system on your server with a single command.

4-Pane AI Agent Team
1-Line Install
Auto Verify & Retry
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N-Pane Architecture

Starts with a default 4-Pane configuration and scales to any number of Panes to match your use case.

Opus

Handles overall pipeline design and decision-making. Decomposes tasks and delegates to sub-agents, then performs final review.

Sonnet Backend

A dedicated backend worker that executes Opus task assignments as working code.

Haiku

Automatically verifies and monitors implementation results. Re-delegates fixes to the responsible Sonnet worker on failure.

Sonnet UI

Dedicated to HTML, CSS, and JavaScript. Runs in parallel with the backend worker, independently accelerating development.

Core Features

ACK Handshake

Eliminates duplicate task execution and ensures reliable message delivery.

3x Retry + Fallback

Retries failed messages 3 times at 3-second intervals. Falls back to an alternate pane if all attempts fail, then escalates to Opus as a last resort.

30s Health Check

Automatically inspects process status on each tmux pane every 30 seconds. Attempts up to 3 automatic restarts within 60 seconds when anomalies are detected.

Declarative Auto-Chain

When specific tags and keywords are detected, the next pipeline step triggers automatically based on rules in harness.json.

Hybrid SDK Architecture

A Python daemon, 32 shell scripts, JSON configs, and role rule files unified into a single SDK. Runs entirely on Python standard library — no pip install required.

Bird Nesting Install

Once the package arrives on your server, it automatically configures its own execution environment in five stages — Landing, Nesting, Feeding, Grooming, and Wake-up — with zero manual intervention.

One Engine, Many Applications

Publishing & Content

Automates the entire workflow from planning and writing to proofreading, editing, and layout. Even a solo publisher can achieve professional editorial team quality.

Technical Writing Solo Publishing Content Production Publisher Workflows

Software Development

Design, implementation, testing, and deployment are processed in parallel across 4 Panes. Backend and frontend proceed simultaneously, shortening the development cycle.

App/Web Dev Team Workflows Workflow Automation

Business & Startups

Suitable for everyone from early-stage startups to small businesses.

Startup MVP SMB Digitization E-commerce Setup

Marketing & Branding

Systematically generates and validates brand strategy, content plans, and design briefs.

Marketing Strategy Design Systems Proposal Writing

Education & Research

Also suitable for knowledge-based businesses.

Course Creation Paper Workflows Knowledge Business

Organization & Operations

Converts repetitive tasks — document automation, HR, customer support, knowledge management — into pipelines for improved operational efficiency.

Doc Automation HR & Recruiting Customer Support Knowledge Mgmt

Community

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