workflowstacks
saas-starter

flexprice: Seamless usage‑based billing for SaaS founders

flexprice gives founders real‑time usage metering, credit top‑ups and feature‑access controls via a no‑code UI, available cloud or self‑hosted. 6.9k+ GitHub stars.

From the repo · “Usage-based pricing and billing for developers 🔓 Cloud or self-hosted ⚙️ No-code UI 💰 Realtime usage metering 🎟 Credits & top-ups 🔑 Control feature access”

6,879 stars961 forksGoGuide quality 9/10 · reviewed Oct 8Updated 10/21/2026100% free · open source
What it does

Flexprice provides a flexible pricing and billing system for SaaS applications, allowing for usage-based pricing, real-time metering, and feature access control.

When to use it
  • •When you need to implement a pay-as-you-go pricing model for your SaaS application
  • •When you want to provide tiered pricing based on usage or features
  • •When you need to integrate billing and metering into your application without requiring extensive development
Ready-to-paste prompt
curl -X POST 'http://localhost:8080/api/v1/meters' -H 'Content-Type: application/json' -d '{"name": "my-meter", "description": "My example meter"}'
Heads up: Make sure you have Go (version 1.17 or higher) installed on your system before attempting to install and run Flexprice, as it is a Go-based application
Saves to your device
Use with Claude
New

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

🛠️ Technical setup

Expect 20–40 minutes in a terminal — or let your AI agent drive it.

Try it instantly — no install
Claude Code
mkdir -p ~/.claude/skills/flexprice && curl -fsSL https://workflowstacks.com/api/skills/flexprice/claude-skill -o ~/.claude/skills/flexprice/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.

How flexprice: Seamless usage‑based billing for SaaS founders works
Codeflow
Free to inspect

Flexprice: Seamless usage‑based billing for SaaS founders is a very large Go project (~605k lines across 1980 code files, plus 4 test files). It is a full software project: use it through its install path rather than reading it end to end. Last commit this month, AGPL-3.0 license, has a test suite.

Size
Very large codebase
~605k lines · 1980 code files · days to read — use, don't read
Setup
Developer setup
A real software project. Use it via its install path; don't expect to read it all.
Runs on
Go · Docker
No API keys detected
Go 95%Shell 1%Python 1%TypeScript 1%PLpgSQL 1%
Where to start reading
  1. 1
    README.md
    Start here — what it does and how to install it
  2. 2
    AGENTS.md
    The instructions the AI actually follows
  3. 3
    main.go
    Where the program starts running
  4. 4
    go.mod
    Dependencies and the commands it exposes
  5. 5
    internal/integration/main.go
    Inside internal/ — the main logic begins here
What's in each folder
internal/Core code — the actual logic1460 files
api/Backend / API68 files
cmd/Command-line entry points14 files
docs/Documentation162 files
ent/Folder446 files
scripts/Helper scripts74 files
migrations/Folder40 files
integration-testing-suite/Folder14 files
READMEHas testsDocumentedCI checksDocker readyAGPL-3.0 licenseUpdated this month
Quick Actions
Details
Creator
flexprice
Language
Go
Category
saas-starter
Published
11/5/2024

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Featured on WorkflowStacks
[![Featured on WorkflowStacks](https://workflowstacks.com/api/badge/flexprice.svg)](https://workflowstacks.com/skills/flexprice?utm_source=github&utm_medium=badge)
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