Run an AI Assistant on Your Claude, Cursor or Copilot Subscription

Most AI assistants assume you'll paste in a pay-per-token API key and watch a meter run. But if you're a developer, you probably already pay a flat monthly fee for Claude, Cursor, or GitHub Copilot. Jarvis AI Assistant can run on those subscriptions directly — so your assistant uses the plan you've already got, with no separate API bill.

Using the CLI you already have

Those tools ship command-line agents, and Jarvis can drive them as model backends. When you route to one, the request goes through that CLI on your machine — authenticated by your existing login — instead of a metered API endpoint. No key to paste, no per-token charge.

• Claude Code — runs on your Claude subscription (e.g. a Max plan).
• Cursor — runs on your Cursor Pro/Business plan.
• GitHub Copilot — runs on your Copilot subscription.

To keep them fast, Jarvis holds a warm process for each so there's no cold-start penalty every time you ask — the CLI is already up and waiting.

Mix subscriptions, keys, and local — freely

This isn't all-or-nothing. The same router that reaches your subscription CLIs also handles pay-per-use API keys (Claude, GPT, Gemini, Groq, OpenRouter) and fully local Ollama models. You can lean on your flat-fee subscription for heavy work, drop to a free local model for private tasks, and add a key only if you want a model your subscriptions don't cover.

How Jarvis picks

You can name a model per message with a prefix, or set a default and forget it. Subscription CLIs are always opt-in — Jarvis won't silently route through one unless you choose it — so there are no surprise interactions with your plan. And if a backend is unavailable, the router falls back along a chain so you still get an answer.

Why it matters

The usual objection to a powerful agent is cost: "if it runs 100 tool-driven requests a session, the API bill will hurt." Running on a flat-fee subscription you already pay for removes that anxiety — heavy usage doesn't translate into a scary invoice, so you can actually let the assistant do a lot of work.