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Harness Router

Fast AI tool routing powered by Jev.

Built by Kamil Mosciszko

Launched September 30, 2026

Visit website → Upvotes · 79

  • Overview
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  • FAQ
Harness Router

Harness Router screenshot 2Harness Router screenshot 3Harness Router screenshot 4Harness Router screenshot 5

About

Harness Router is a decision layer for AI coding agents that makes tool selection faster, cheaper, and more reliable before execution. Use it as a Codex hook to automatically route every tool call, or as a skill when the agent should invoke routing explicitly. Obvious decisions stay on the fast path, ambiguous choices are resolved with Jev, and complex multi-step decisions can escalate to MCTS.

Ask AI

ChatGPT Claude Perplexity Grok

For agents

llms.txt · llms-full.txt · ai.txt · Live fact sheet · Full catalog (.md) · Endpoint index · API spec · REST access · Agent server · Server manifest · Server discovery

Key Features

  • Use fast routing for ordinary tool selection decisions
  • Search multi-step decision trees with bounded MCTS
  • Integrate as native MCP server or agent hook
  • Validate tool calls against discovered tool inventory

Use Cases

  • AI coding agents that need faster tool selection decisions
  • Projects seeking to reduce model reasoning steps on obvious tool choices

Pricing

See the Harness Router website for current pricing.

View Harness Router pricing →

FAQ

What is Harness Router?

Harness Router is a decision layer for AI coding agents that makes tool selection faster, cheaper, and more reliable before execution. Use it as a Codex hook to automatically route every tool call, or as a skill when the agent should invoke routing explicitly. Obvious decisions stay on the fast path, ambiguous choices are resolved with Jev, and complex multi-step decisions can escalate to MCTS.

What are the key features of Harness Router?

Harness Router includes: • Use fast routing for ordinary tool selection decisions • Search multi-step decision trees with bounded MCTS • Integrate as native MCP server or agent hook • Validate tool calls against discovered tool inventory

What can I use Harness Router for?

• AI coding agents that need faster tool selection decisions • Projects seeking to reduce model reasoning steps on obvious tool choices

How much does Harness Router cost?

See the Harness Router website for current pricing. You can discover and review Harness Router for free on Launch Llama.

What category does Harness Router belong to?

Harness Router is listed under AI Coding Agents, LLM Developer Tools on Launch Llama.

How do I get started with Harness Router?

Click the "Visit Website" button on this page to go directly to Harness Router. You can also upvote and leave a review to help other founders discover it.

Founder Guides

  • How to use Harness Router to save time

Reviews

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Alternatives

  • HarnessRouter

    For developers: HarnessRouter runs your AI agent backend via one API so you ship code, files, and videos without months of orchestration work.

  • Router by Ramp

    For engineers: Router by Ramp routes every LLM request to the lowest-cost model that meets your needs so you cut inference costs and simplify API management.

  • Gauge

    For developer tools: Gauge optimizes your product for AI agents so they choose your tool autonomously without sales demos.

  • Request Router

    For sales teams: Request Router replies to inbound leads instantly with AI-generated qualifying questions so you engage prospects before competitors respond.

  • ModelRouter

    For AI developers: ModelRouter routes requests across GPT, Claude, and Gemini through one API so you compare performance and costs before scaling.

  • OrcaRouter

    For AI teams: OrcaRouter routes requests to optimal LLM models automatically so you cut costs by 40% while maintaining quality without token markup.

Harness Router · Website

  • Founded by Kamil Mosciszko
  • Listed September 2026
  • Updated September 30, 2026
  • No reviews yet

AI Coding Agents LLM Developer Tools