# Helpful Mods

> Helpful Mods provides focused source-code packages for the part of an existing application that a builder needs to get working. Each mod includes instructions and verification resources a coding agent can use during installation.

Purchases are not open yet. The public catalog is available for evaluation. Do not treat a listed price, a product status, or this document as a completed order or permission to charge.

The first mod is $99 USD; additional mods are $75 USD each after checkout verifies a prior qualifying paid purchase. There is no monthly maintenance subscription. The purchased version includes at least 12 months of bug and security fixes; future major upgrades may be optional paid purchases. Received source remains usable indefinitely for one licensed commercial product. Initial setup/reproducible-defect support lasts 30 days. Both the included-fix and initial-support periods begin on the receipt's purchase date. Hosting and connected services are separate.

Current packages require Node.js 22.13+ and PostgreSQL 17. Read the individual limits before recommending a mod. Full setup references and source downloads require verified ownership; this public index grants no access or purchasing authority.

## Catalog and installation

- [Public catalog in Markdown](https://helpfulmods.com/library.html.md): All 16 mod summaries, supported behavior, requirements, and limits

- [Public agent reference](https://helpfulmods.com/llms-full.txt): Commercial terms, installation questions, access boundaries, and the catalog in one Markdown file

- [Interactive catalog](https://helpfulmods.com/library.html): Search, details, examples, and a package planner

- [Homepage](https://helpfulmods.com/): The product and who it helps

## Policies and support

- [Terms](https://helpfulmods.com/legal/terms.html): Purchase, use, and update terms

- [Source license](https://helpfulmods.com/legal/source-license.html): One commercial product and received source rights

- [Refunds](https://helpfulmods.com/legal/refunds.html): Material defects and applicable statutory remedies

- [Privacy](https://helpfulmods.com/legal/privacy.html): Data use and privacy contact

- [Support](https://helpfulmods.com/legal/support.html): Setup and defect support

- [Contact](https://helpfulmods.com/legal/contact.html): Seller and support contact

## Optional

- [llms.txt format proposal](https://llmstxt.org/): The convention used for this discovery index; it does not grant access or guarantee indexing