Cursor Bridge – Run Unlimited Claude Code on Your Cursor Subscription

A new open-source Rust binary called cursor-bridge lets Cursor subscription users run Anthropic's Claude Code CLI for free on Cursor's backend, eliminating separate API costs. The tool, available via cargo install or prebuilt binaries, automatically proxies Anthropic API calls through Cursor's agent CLI without requiring manual configuration or background daemons. Cursor-bridge is not affiliated with Anthropic or Cursor/Anysphere and is offered under the MIT license.

One binary. Claude Code on Cursor's backend. Zero config. You have a Cursor subscription . You want to use Claude Code the CLI . Cursor's Auto model is included with your subscription — free, unlimited, no extra per-token cost. Without cursor-bridge, you'd pay separately for Anthropic API credits or a Claude Pro plan. With cursor-bridge, you just run cursor-bridge and it works — Claude Code runs on your Cursor backend. Use cases: - You're already paying for Cursor → get Claude Code for free on top - You want Claude Code's agent capabilities file editing, shell commands, tool use without Anthropic billing - Cursor's Auto model is free and unlimited with subscription — Claude Code becomes effectively free to run cursor-bridge interactive session cursor-bridge "refactor this file" one-shot prompt cursor-bridge -p "list files" pipe mode That's it. No proxy management. No env vars. Everything automatic. cursor-bridge Rust binary ├── Starts a local HTTP proxy on a random port ├── Reads your Cursor auth token from macOS keychain or CURSOR TOKEN env var on Linux ├── Spawns claude with env vars pointing at the proxy ├── Proxy translates Anthropic API calls → Cursor agent CLI └── Cleans up on exit You don't see the proxy. You don't manage it. It's there and gone. Prerequisites - Cursor installed with agent CLI authenticated agent login - Claude Code installed curl -O https://claude-code.anthropic.com/claude && chmod +x claude cargo install cursor-bridge Then just use it cursor-bridge Or download a binary from Releases. macOS or Linux - Cursor subscription with agent CLI in PATH - Claude Code CLI claude in PATH macOS : token auto-read from keychain Linux : set CURSOR TOKEN env var no keychain fallback All other solutions are background servers you manage. cursor-bridge is a command you run. Existing proxies cursor-api-proxy , cursor-composer-in-claude , cursor-proxy are Node.js servers that live in your process list, occupy a port, and need manual env var wiring. They don't ship with Claude Code — they sit between you and it, adding ceremony. cursor-bridge is the opposite. There is nothing to start, stop, or configure. It is the session: | The old way | cursor-bridge | |---|---| Start a proxy daemon, note the port, set env vars, then run claude | Run cursor-bridge — done | | Background process that outlives your session | Lives and dies with your terminal | | Pick a port, pray it doesn't clash | Random port, zero conflicts | npm install + npx + Node.js runtime 60+ MB | One Rust binary, ~780 KB, statically compiled | | Multiple npm packages, peer deps, version mismatches | cargo install or download. One binary. Nothing else. | No daemon. No npm install . No env vars. No port hunting. No cleanup. Just a single binary that works. cursor-bridge replaces claude entirely — it manages the proxy lifecycle internally, spawns the CLI, and cleans up after itself when you're done. Linux : requires CURSOR TOKEN env var no keychain support . No workspace sandboxing — the agent runs in your current directory. Single account — no multi-account rotation yet . This project is not affiliated with Anthropic or Cursor/Anysphere. Use at your own risk. MIT