Connect pi

pi is a coding agent for the terminal.

Before you start: create a Fortytwo API key and buy credits — see Quickstart, step 1. Give each agent its own key with a Spend limit.

Setting	Value
Base URL	`https://api.fortytwo.network/v1`
Model ID	`qwen/qwen3.8-27b`

Install pi

On macOS or Linux:

curl -fsSL https://pi.dev/install.sh | sh

On Windows, in PowerShell:

powershell -c "irm https://pi.dev/install.ps1 | iex"

The installer adds Node.js if it is missing.

Add Fortytwo to models.json

Create ~/.pi/agent/models.json with this content:

~ is your home folder. Folders that start with a dot, such as .pi, .config or .codex, are hidden. To show them: Cmd+Shift+. in Finder on macOS, View → Show → Hidden items in File Explorer on Windows, Ctrl+H in most Linux file managers.

~/.pi/agent/models.json

{
  "providers": {
    "fortytwo": {
      "name": "Fortytwo",
      "baseUrl": "https://api.fortytwo.network/v1",
      "api": "openai-completions",
      "models": [
        {
          "id": "qwen/qwen3.8-27b",
          "name": "Qwen3.8 27B",
          "reasoning": true,
          "input": ["text", "image"],
          "contextWindow": 262144,
          "maxTokens": 16384
        }
      ]
    }
  }
}

If the file already exists, add the fortytwo entry inside its providers object.

Enter your API key

Start pi in your project folder:

pi

Type /login
Choose Sign in with an API key, then Fortytwo, and paste your key. pi saves it in ~/.pi/agent/auth.json.

pi then reports that no default model is configured for fortytwo. The next step sets it.

pi: Fortytwo in the provider list of /login

Select the model

Type /model, then qwen3.8, and choose qwen/qwen3.8-27b [fortytwo].
Press Ctrl+S to make it the default for new sessions.

Set reasoning to medium

pi starts with thinking off and sends no reasoning level. Set the level to medium, so every request asks for it:

Type /thinking and choose medium.
Press Ctrl+S to make it the default for new sessions.

Start a task

Type a task and press Enter. The status line shows qwen/qwen3.8-27b • medium.

pi: task running on qwen/qwen3.8-27b with thinking medium

More options: pi compatible endpoints .

Something not working with your agent, or using one we have not listed? Tell us in the platform: Feedback for ideas and small bugs, Contact support if it blocks your work, or Report a security issue.

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