# tokenix with Antigravity
Antigravity loads tokenix as a native plugin. Its hooks speak Antigravity's own
dialect: a `toolCall` payload in, and `decision: allow | deny` out instead of exit
codes.
## Install
The installer drives the Antigravity CLI, so `agy` must be on your PATH.
```bash
tokenix index . # once per repository
tokenix install-hook --tool antigravity # user-level plugin
tokenix install-hook --tool antigravity --local # this workspace only
```
| Global (default) | Stages the plugin, runs `agy plugin install`, validates it at `~/.gemini/config/plugins/tokenix/`, and removes the legacy `~/.gemini/antigravity-cli/plugins/tokenix` |
| `--local` | Writes `.agents/plugins/tokenix/` in the workspace and runs `agy plugin validate` |
## What gets written
`plugin.json` (`{"name": "tokenix"}`) and `hooks.json`:
```json
{
"tokenix-hooks": {
"PreToolUse": [{
"matcher": "^(read_file|view_file|grep_search|run_command|run_in_terminal)$",
"hooks": [{ "type": "command", "command": "\"/abs/path/to/tokenix\" hook-antigravity", "timeout": 10 }]
}]
}
}
```
`hook-antigravity` is the same decision engine as `tokenix hook`, with
Antigravity's input and output format.
## What it does
| `read_file`, `view_file` | Read | `{"decision":"deny","reason":"<outline>"}` for large code files |
| `grep_search` | Grep | Symbol lookup or semantic results |
| `run_command`, `run_in_terminal` | Bash | Rewritten through `overwrite: {name, args}` to run via `tokenix run` |
| Anything else, or no/stale index | n/a | `{"decision":"allow"}` |
## Check that it works
```bash
tokenix gain # after a session
tokenix # dashboard → Stats tab shows Antigravity (global/local)
```
## MCP instead of (or besides) the plugin
`tokenix install-hook --tool mcp` registers the tokenix MCP server in
`~/.gemini/antigravity-cli/mcp_config.json`, independently of the plugin. The
[MCP guide](mcp.md) lists the tools it exposes.
## Remove
```bash
tokenix remove-hook --tool antigravity # agy plugin uninstall tokenix
tokenix remove-hook --tool antigravity --local # deletes .agents/plugins/tokenix/
```
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