Powerball Harness Marketplace
Add this marketplace to run a plan–work–review harness that guides contract-style software delivery end to end with Claude Code and Codex-style vibecoding discipline.
Overview
powerball-harness-marketplace is a plugin marketplace for the Build phase that installs the Harness plugin for plan–work–review contract development in Claude Code.
What is this marketplace?
- Single harness plugin for full-cycle contract development on Claude Code
- Plan–work–review workflow with vibecoder-oriented contract delivery
- MIT-licensed tim-hub plugin at marketplace version 5.9.2
- Keywords include codex+claudecode, harness-workflow, and contract-development
- Ships output styles from ./output-styles/ for consistent agent formatting
- Marketplace contains 1 plugin: harness
- Marketplace version 5.9.2 with MIT license on the harness plugin
Community signal: 32 GitHub stars.
What problem does it solve?
Freelance and contract builders lose weeks when AI coding sessions skip planning, blur acceptance criteria, and skip structured review between milestones.
Who is it for?
Solo devs and small studios running statement-of-work or milestone-based client builds who want one workflow plugin instead of scattered commands.
Skip if: Hackathon spikes, open-ended research with no deliverable contract, or teams that only need a one-shot code generator.
What do I get? / Deliverables
After registration you get a single harness plugin that steers full-cycle contract work with consistent planning, execution, and review phases tied to output styles.
- Installed harness plugin from a 1-plugin marketplace
- Plan–work–review oriented agent sessions for contract builds
- Consistent output styling via plugin outputStyles configuration
Plugins in this marketplace
1 plugin — install individually after you add the marketplace.
Recommended Marketplaces
Journey fit
Full-cycle contract development is anchored in Build because it orchestrates how you actually execute scoped work, not just how you test or launch it. PM subphase fits because the harness emphasizes planning gates, work execution, and review loops typical of managed delivery and statement-of-work projects.
How it compares
Workflow harness marketplace for delivery PM, not an MCP server or domain API integration.
Common Questions / FAQ
Who is Powerball Harness Marketplace for?
It is for vibecoders and solo contractors using Claude Code who need a repeatable harness for client contracts rather than unstructured chat-driven coding.
When should I use Powerball Harness Marketplace?
Use it at the start of a scoped build engagement when you want plan–work–review gates before deep implementation and before handoff review.
How do I add Powerball Harness Marketplace to my agent?
Add the tim-hub marketplace URL or manifest in Claude Code, install the harness plugin from the listing, and apply bundled output styles from the plugin path as documented in the repository.