# L Harness

> Open-source LINE CRM on Cloudflare. Replaces paid SaaS with step messaging, broadcasts, forms, reservations, scoring, IF-THEN automation, MCP server for Claude Code.

- **Category:** Marketing Automation
- **Licence:** MIT
- **Latest version:** v0.26.0
- **Open source:** oss
- **Languages:** Typescript, JavaScript
- **Tags:** Mcp, Mcp Server, Crm, Marketing Automation, Segmentation, Self Hosted, Cloudflare Workers, Ai integration, Line Official Account, Message Scheduling, Lixff Forms, L Harness

## Description

L Harness is a self-hosted CRM platform designed for LINE Official Account operators. It manages friend contacts, tags, scores, and conversations while automating message delivery through step flows, broadcasts, and conditional rules. The software runs entirely on Cloudflare Workers and D1, requiring only a Cloudflare account to deploy. Users can set up LIFF forms, calendar booking, affiliate tracking, and rich menu switching without licensing fees. With its built-in MCP server, developers can control campaigns and operations directly through Claude Code or custom TypeScript SDK integrations.

## Links

- [Homepage](https://github.com/shudesu/line-harness-oss)
- [Website](https://the-harness.com/line-harness/)
- [Functionality Overview](https://the-harness.com/line-harness/features/)
- [Installation Guide](https://the-harness.com/line-harness/how-to/)
- [Pricing](https://the-harness.com/line-harness/pricing/)
- [Manual](https://the-harness.com/line-harness/manual/)
- [Changelog](https://the-harness.com/line-harness/changelog/)
- [Plugin Market](https://the-harness.com/line-harness-plugin-market/)
- [YouTube Demo Video](https://youtu.be/DiRuGaeq1sM)

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Source: https://selfhost.directory/project/line-harness-oss