Template
Starter kits and demos for running agent harnesses like Codex and Claude Code as your product backend.
Rating
4.3 / 5
Pricing
Freemium
Difficulty
Intermediate
Works on
Cross-Platform
Built with love by Shushant Lakhyani. Building bestproductivityresources.com
The HarnessRouter starter kit is a catalogue of working agent products and readable demos showing how to run agent harnesses such as Codex and Claude Code as a product backend through one API, including streaming, sessions, follow-up turns, cancellation and file downloads.
Third-party open-source projects. We are not affiliated with their authors; repositories are provided as-is by their maintainers. Review each project's license, code and security before installing. See our Disclaimer.
Founders and developers building products on top of coding-agent harnesses.
People not building agent products.
Not sold on HarnessRouter Starter Kit? These do a similar job, and each card says what it has in common.
Focus: android, automation and ai agents. Shares claude code and codex with HarnessRouter Starter Kit. A website, not a template. Free (HarnessRouter Starter Kit: Freemium). Adds Web. Rated 4.8 (HarnessRouter Starter Kit: 4.3).
Focus: agent skills, agents.md and cursor. Shares claude code and codex with HarnessRouter Starter Kit. A website, not a template. Free (HarnessRouter Starter Kit: Freemium). Adds Web. Rated 4.7 (HarnessRouter Starter Kit: 4.3).
Focus: obsidian, obsidian plugin and ai agents. Shares claude code and codex with HarnessRouter Starter Kit. A website, not a template. Free (HarnessRouter Starter Kit: Freemium). Adds Web, macOS and Windows. Rated 4.7 (HarnessRouter Starter Kit: 4.3).
Focus: ai browser, browser automation and ai agents. Shares codex and claude code with HarnessRouter Starter Kit. A website, not a template. Free (HarnessRouter Starter Kit: Freemium). Adds Web, macOS and Windows. Rated 4.7 (HarnessRouter Starter Kit: 4.3).
Focus: vibe coding, ai coding and pair programming. Shares codex and claude code with HarnessRouter Starter Kit. A course, not a template. Free (HarnessRouter Starter Kit: Freemium). Adds Web. Rated 4.7 (HarnessRouter Starter Kit: 4.3).
Focus: agent harness, coding agents and open source. Shares claude code and codex with HarnessRouter Starter Kit. An AI tool, not a template. Free (HarnessRouter Starter Kit: Freemium). Adds Linux. Rated 4.6 (HarnessRouter Starter Kit: 4.3).
Want to spend nothing? These free picks cover similar ground.
Focus: agent skills, mcp and sync. Shares claude code and codex with HarnessRouter Starter Kit. An AI tool, not a template. Free (HarnessRouter Starter Kit: Freemium). Adds macOS, Windows and Linux. Rated 4.6 (HarnessRouter Starter Kit: 4.3).
Focus: coding agents, cursor and rust. Shares claude code and codex with HarnessRouter Starter Kit. A desktop app, not a template. Free (HarnessRouter Starter Kit: Freemium). Adds macOS, Linux and Windows. Rated 4.5 (HarnessRouter Starter Kit: 4.3).
Focus: compliance, content moderation and social media. Shares claude code and codex with HarnessRouter Starter Kit. An automation tool, not a template. Free (HarnessRouter Starter Kit: Freemium). Adds macOS, Windows and Linux. Rated 4.5 (HarnessRouter Starter Kit: 4.3).
Focus: software design, code review and diagrams. Shares claude code and codex with HarnessRouter Starter Kit. A desktop app, not a template. Free (HarnessRouter Starter Kit: Freemium). Adds macOS, Windows and Linux. Rated 4.5 (HarnessRouter Starter Kit: 4.3).
Focus: retrieval and context. Shares claude code and codex with HarnessRouter Starter Kit. A framework, not a template. Free (HarnessRouter Starter Kit: Freemium). Rated 4.4 (HarnessRouter Starter Kit: 4.3).
Focus: motion graphics, video editing and prompts. Shares claude code and codex with HarnessRouter Starter Kit. A website, not a template. Free (HarnessRouter Starter Kit: Freemium). Adds Web. Rated 4.4 (HarnessRouter Starter Kit: 4.3).
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