FalseGreen documentation

Connect your coding agent.

Use the FalseGreen CLI shim to connect your editor. It handles authentication, device activation, credentials, and MCP configuration for you.

Hosted verification currently supports Python projects within the supported execution environment.

Install the shim
cargo install falsegreen

Log in once
falsegreen login --token YOUR_FALSEGREEN_KEY

Start here

One setup flow for every editor

Install and log in to the shim once, then run the matching install command for your editor. The shim writes the correct MCP configuration and keeps the API key out of your editor configuration.

cargo install falsegreen
falsegreen login --token YOUR_FALSEGREEN_KEY

Replace YOUR_FALSEGREEN_KEY with your key, then reload or restart your editor.

01 · Codex

Connect Codex

Run the matching shim command from a terminal:

falsegreen install codex

The shim writes the editor’s MCP configuration for you. Reload Codex, then ask your agent to list its available MCP tools.

02 · GitHub Copilot

Connect GitHub Copilot

Run the matching shim command from a terminal:

falsegreen install github-copilot

The shim writes the editor’s MCP configuration for you. Reload GitHub Copilot, then ask your agent to list its available MCP tools.

03 · Claude Code

Connect Claude Code

Run the matching shim command from a terminal:

falsegreen install claude-code

The shim writes the editor’s MCP configuration for you. Reload Claude Code, then ask your agent to list its available MCP tools.

04 · OpenCode

Connect OpenCode

Run the matching shim command from a terminal:

falsegreen install opencode

The shim writes the editor’s MCP configuration for you. Reload OpenCode, then ask your agent to list its available MCP tools.

05 · Cursor

Connect Cursor

Run the matching shim command from a terminal:

falsegreen install cursor

The shim writes the editor’s MCP configuration for you. Reload Cursor, then ask your agent to list its available MCP tools.

06 · Finish

Verify the connection

Restart or reload your client, then ask it to list its available MCP tools. If authentication fails, run falsegreen status and check that your key is active.

Reference

CLI reference

falsegreen status shows authentication and device status. falsegreen logout deactivates the current device and frees an activation slot. falsegreen mcp runs the MCP server over STDIO.

Each license supports two activated devices. The service allows 60 requests per minute with a burst of 20; retry 429 responses after the Retry-After duration.