agent-intern

Give Claude Code an intern.

Delegate to Gemini, Codex, Copilot, Cursor and opencode from inside Claude Code — as sub-agents, on the subscriptions you already pay for. Text answers, image generation, real repo work, parallel swarms.

Quick start · What it's for · Backends · Security · Docs

Claude Code is one model on one quota. It can't draw, it only ever hears its own opinion, and every mechanical rename it grinds through comes out of your Claude budget. Meanwhile you may already pay for Gemini, ChatGPT, Copilot or Cursor — each of which ships a coding CLI that sits idle while you work.

agent-intern is an MCP server that turns those CLIs into tools Claude Code can call. Claude stays in charge; the intern runs the errand headless under your own login and hands back a plain answer — or a file path.

Quick start

1. Install it (needs uv). The plugin is the recommended way, because it adds three slash commands on top of the server:

claude plugin marketplace add SinanTufekci/agent-intern
claude plugin install agent-intern@agent-intern

Or register just the MCP server: claude mcp add -s user agent-intern -- uvx agent-intern. Pick one or the other, since doing both gives Claude every tool twice.

2. Install at least one backend CLI and sign in once. Any one of them works on its own:

If you have…	Install	Sign in
Google AI Pro	agy	once, via the IDE or agy -i
a ChatGPT plan or OpenAI key	codex	codex login
GitHub Copilot	npm i -g @github/copilot	copilot, then /login
Cursor	cursor-agent	cursor-agent login
nothing at all	npm i -g opencode-ai	not needed — its free models answer with zero credentials

3. Restart Claude Code and just ask. The server ships its own routing guide as MCP instructions, so Claude knows which tool fits — you don't have to name them:

• "Ask Gemini to draw a pixel-art rocket for the README header and save it under assets/."
• "Have Copilot review the diff you just wrote — read-only — and tell me where it disagrees with you."
• "Summarise each of the six files in src/handlers in parallel with a swarm."

With the plugin you also get three slash commands:

Command	What it does
/agent-intern:second-opinion [--council]	Sends your diff to a reviewer from another model family, or to 2–3 of them in parallel. Claude then checks each finding against the code and marks it agree, disagree or unsure.
/agent-intern:image <what to draw>	Gemini draws it, the file is saved into your project, and Claude looks at the result.
/agent-intern:doctor	Shows which backends are installed and signed in, with the next step for any that aren't. Spends no quota.

Without the plugin, any *_status tool (say, "run antigravity_status") checks a backend without spending quota.

[!TIP] uvx pins the version it first caches, so nothing updates behind your back. Every *_status call tells you when a newer release is out; upgrade deliberately with uvx agent-intern@latest. Other install paths, from source included →

What it's for