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Toolly
HARNESS ENGINE

Hybrid Harness Engine

The design–implement–verify pipeline runs autonomously on a 2-second polling interval.

N-Pane Architecture

The default configuration is 4-Pane (Opus, Sonnet, Haiku, Sonnet-UI) and can be expanded freely. Add language-specific Panes for translation projects or domain-specific Panes for large-scale development.

Pane 0

Claude Opus

The orchestrator. Designs the architecture, decomposes tasks by TASK_ID, and delegates to sub-workers via tag messages. Handles final judgment and review.

Pane 1

Claude Sonnet

Scope of access is intentionally restricted to its assigned role.

Pane 2

Claude Haiku

Runtime guardian. Automatically performs syntax checks and response verification. Replies with PASS or FAIL. Does not modify code directly.

Pane 3

Claude Sonnet

Frontend engineer. Dedicated to HTML, CSS, and JavaScript. Runs in parallel with the backend worker. Reports to the orchestrator on completion.

User Instruction → Opus Design & Delegate → Sonnet Implement & Report → Auto-Chain → Haiku Verify → Opus Close or Re-delegate

Core Features

ACK + CLOSE Handshake

Every message is acknowledged on receipt, preventing duplicates and ensuring reliable delivery across all panes.

Auto-Retry + Fallback Routing

Failed messages are retried automatically. If all attempts fail, the engine reroutes to a fallback pane and escalates to the orchestrator as a last resort.

Periodic Health Check + Auto-Restart

The daemon periodically inspects each pane's process status. If a worker is unresponsive, the engine attempts automatic restarts before escalating to the orchestrator.

Declarative Auto-Chain

Pipeline steps are triggered automatically based on declarative rules in the config file. Tag and keyword matching drives the flow without manual intervention.

Hybrid SDK Architecture

Python daemon (standard library only), shell scripts, JSON configs, and role rules unified into a single SDK. Zero external dependencies beyond Python, tmux, and jq.

DEB/RPM Package

Distributed as signed packages with RSA/SHA256 verification. Includes the daemon, config templates, shell scripts, role rules, and deploy/undeploy tools.

One Engine, Many Applications

The same design–implement–verify pipeline structure applies across every domain. Swap the domain, and the engine adapts.

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

Pricing

Starter

Individual / Small Team

  • 1 Server
  • 4 Panes
  • Email Support
Get in Touch

Team

Team / Startup

  • Multi-Server
  • Priority Support
  • Custom Config
Get in Touch

All plans are available upon inquiry. Contact us to get started. — toollysoft@gmail.com

Bird Nesting

A bird doesn't land just anywhere. It finds its spot, builds a nest, and settles in.
The Hybrid Harness Engine works the same way. When the package arrives on your server, it self-configures its own execution environment — no manual assembly required.

1
Bird Landing Arriving on the server

The DEB or RPM package is delivered to the server. 52 files verified via RSA/SHA256 signature are placed at the designated path.

2
Bird Nesting Creating execution space

Automatically creates the directory structure, log paths, state files, and data directories. The package finds its place and builds its nest.

3
Bird Feeding Resolving dependencies

install-check.sh verifies the presence of 5 tools: bash, tmux, python3, jq, and Claude Code CLI. Outputs guidance for any missing dependencies.

4
Bird Grooming Setting permissions & config

setup-env.sh takes the execution user, tmux session name, and project root as input to auto-generate the harness.local.json config file. Execution permissions are also configured.

5
Bird Wake-up Ready to run

harness-start.sh launches the 4-Pane tmux session. Roles are auto-assigned to each Pane, and the harness daemon begins 2-second polling. The engine operates autonomously from this point.

In one line

Bird Nesting: the package lands on your server, builds its own nest, and is ready to run.

For detailed installation instructions, see the Guide page.

Ready to get started?

Have questions or want to try the engine? Send us an email.

Contact Us