saas-starter

billabear – Streamlined SaaS Subscription Management for Founders

Name: billabear – Streamlined SaaS Subscription Management for Founders
Author: billabear

A PHP‑based billing and invoicing engine that handles subscriptions, Stripe integration, and receipts via a clean REST API. Ideal for SaaS startups needing a reliable, ready‑to‑deploy billing system.

From the repo · “Subscription Management and Billing System”

beginner⏱ 30 minutes💵 Free

761 stars+1★ this week59 forksPHPGuide quality 9/10 · reviewed Oct 21Updated 9/13/2026100% free · open source

What it is

Makes and manages online subscriptions with a customizable billing system.

Real use case example

"A founder launches a new SaaS and needs to set up subscription plans and automate invoice generation. They use Billabear to create a billing system in 30 minutes, then set up an automation to send welcome emails to new customers and generate their first invoices. The founder now has a professional-looking billing system up and running, saving them time and hassle."

Best insideClaude DesktopClaude CodeCodex CLI

When to use it

•When you need to manage multiple subscription plans for your SaaS product
•When you want to automate recurring billing and payment processing
•When you require a centralized dashboard to track subscription metrics and customer insights

Ready-to-paste prompt

php artisan billabear:subscription-create --plan=monthly --customer=john.doe@example.com --quantity=1

Heads up: Billabear requires PHP 8.1 or higher and the Composer package manager to be installed on your system, as well as a MySQL database for storing subscription data

Saves to your device

Use with Claude

New

Skip the builder — one click puts this in Claude, Cursor, Antigravity and more.

✅ Light setup

Installs with a command or two; your AI agent can do it for you.

Try it instantly — no install

Claude Code

mkdir -p ~/.claude/skills/billabear && curl -fsSL https://workflowstacks.com/api/skills/billabear/claude-skill -o ~/.claude/skills/billabear/SKILL.md

Open in another AI app

Opens the app with this repo with the prompt ready to go — no copy-paste needed.

Connect the whole catalog (MCP)

claude mcp add --transport http workflowstacks https://workflowstacks.com/api/mcp

Adds a WorkflowStacks connector to Claude Code: search and load any skill here by chatting.

Use with Claude

New

Skip the builder — one click puts this in Claude, Cursor, Antigravity and more.

✅ Light setup

Installs with a command or two; your AI agent can do it for you.

Try it instantly — no install

Claude Code

mkdir -p ~/.claude/skills/billabear && curl -fsSL https://workflowstacks.com/api/skills/billabear/claude-skill -o ~/.claude/skills/billabear/SKILL.md

Open in another AI app

Opens the app with this repo with the prompt ready to go — no copy-paste needed.

Connect the whole catalog (MCP)

claude mcp add --transport http workflowstacks https://workflowstacks.com/api/mcp

Adds a WorkflowStacks connector to Claude Code: search and load any skill here by chatting.

Quick Actions

Details

Creator

billabear

Language

PHP

Do this with a working workflow

Pages we wrote and tested that put a skill like this to work — importable n8n templates, outcome guides and Claude Desktop configs.

Outcome guide

Turn meeting notes into a summary email automatically

Paste the transcript into a private form and the workflow writes and emails a concise recap — decisions, owners, open questions — that people will actually read.

Outcome guide

Automate your meeting summaries

A private form takes any transcript (from Zoom, Meet, Otter, Fireflies) and emails you back a structured summary: a TL;DR, the decisions made, and action items with owners.