Platforms

Every coding assistant tetris ships support for today. Detection is directory-based — tetris looks for the assistant’s config directory under $HOME and installs its hook there. Nothing touches /etc, nothing runs as root.

This table is sourced from crates/tetris-cli/src/install/ in the binary you’re running. If your assistant is missing, email us with the config file path — it’s usually a two-day turnaround.

Supported assistants

Assistant	Install command	Settings file	Hook mechanism
Claude Code	`tetris install claude`	`~/.claude/settings.json`	`PreToolUse` hook, routes Edit/MultiEdit/Write/NotebookEdit
Codex CLI	`tetris install codex`	`~/.codex/config.toml`	`pre_tool_use` hook
Cursor	`tetris install cursor`	`~/.cursor/` (project-level `.cursorrules`)	Context-preamble injection
Gemini CLI	`tetris install gemini`	`~/.gemini/settings.json`	`preToolUse` hook
OpenCode	`tetris install opencode`	`~/.opencode/config.json`	Pre-prompt filter
Aider	`tetris install aider`	`~/.aider.conf.yml`	`pre_send` command
Factory Droid	`tetris install factory_droid`	`~/.factory/`	Agent pre-hook
Trae	`tetris install trae`	`~/.trae/`	Agent pre-hook
Antigravity	`tetris install antigravity`	`~/.antigravity/`	Agent pre-hook
Hermes	`tetris install hermes`	`~/.hermes/`	Agent pre-hook
GitHub Copilot	`tetris install copilot`	Copilot CLI config	Pre-prompt filter

Install everything at once

tetris install --all

Only wires assistants that are actually detected on the current machine. Safe to re-run.

What gets written

For every assistant, tetris takes a timestamped backup of the settings file before editing it. The backup lives under ~/.tetris/backups/<assistant>/. tetris uninstall restores the most recent backup; pass --no-restore to strip hook entries in place instead.

What doesn’t compress

Tool calls whose payload is not text — image data, binary blobs, base64 pastes — pass through unchanged. Tetris detects non-text content and emits “allow with no change” rather than risk corrupting the input.

Known limitations

Cursor uses a pre-prompt rules mechanism; compression happens per-request, not per-tool-call. Gains are smaller than the JSON-hook assistants.
Copilot has no public pre-tool hook; tetris integrates at the CLI layer only. Inline suggestions in the IDE are not intercepted.
Detection is directory-based. If you delete an assistant’s config directory, tetris no longer considers it installed, even if the binary remains. Tell us if this bites you.

Something missing?

If your assistant isn’t on this list but it has a documented pre-prompt or pre-tool hook, email the hook spec to help@tetris.codes with a link to the assistant’s docs. Adding an adapter is usually small.