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# API Reference
Base URL: `http://127.0.0.1:8123`
Auth header when enabled:
```http
x-clickthrough-token: <token>
```
This API is intended for AI computer control through 3 methods only:
- `see`
- `interact`
- `exec`
All responses use one envelope.
## Response Envelope
Success:
```json
{
"ok": true,
"request_id": "...",
"time_ms": 1710000000000,
"data": {},
"error": null
}
```
Error:
```json
{
"ok": false,
"request_id": "...",
"time_ms": 1710000000000,
"data": null,
"error": {
"code": "validation_error",
"message": "request validation failed",
"details": []
}
}
```
## 1) See
### `POST /see`
Capture a full screen or a region. Optional grid overlay returns coordinate metadata for click mapping.
```json
{
"screen": 0,
"region_x": null,
"region_y": null,
"region_width": null,
"region_height": null,
"with_grid": true,
"grid_rows": 12,
"grid_cols": 12,
"include_labels": true,
"image_format": "png",
"jpeg_quality": 85
}
```
Returns:
- `data.image.base64`
- `data.meta.region` (global desktop coords)
- `data.meta.grid` (rows/cols/cell size + formula)
### `POST /see/zoom`
Capture a tighter crop around a global point and draw another grid over that crop.
```json
{
"screen": 0,
"center_x": 1200,
"center_y": 720,
"width": 500,
"height": 350,
"with_grid": true,
"grid_rows": 20,
"grid_cols": 20,
"include_labels": true,
"image_format": "png",
"jpeg_quality": 90
}
```
Use this for precision before clicking tiny controls.
## 2) Interact
### `POST /interact`
Mouse/keyboard action execution.
```json
{
"screen": 0,
"action": {
"action": "click",
"target": {
"mode": "grid",
"region_x": 0,
"region_y": 0,
"region_width": 1920,
"region_height": 1080,
"rows": 12,
"cols": 12,
"row": 7,
"col": 3,
"dx": 0.0,
"dy": 0.0
},
"button": "left",
"clicks": 1
}
}
```
Supported actions:
- `move`, `click`, `right_click`, `double_click`, `middle_click`
- `scroll` (`scroll_amount`)
- `type` (`text`, `interval_ms`)
- `hotkey` (`keys`)
Target modes:
- `pixel`: absolute global `x,y`
- `grid`: grid cell from a `see`/`see/zoom` response
## 3) Exec
### `POST /exec`
Run host shell commands (PowerShell/Bash/CMD).
```json
{
"command": "Get-Process | Select-Object -First 5",
"shell": "powershell",
"timeout_s": 20,
"cwd": "C:/Users/Paul",
"dry_run": false
}
```
Required header:
```http
x-clickthrough-exec-secret: <secret>
```
## Minimal Procedure for Agents
1. `see` full screen with coarse grid.
2. If uncertain, `see/zoom` target area with denser grid.
3. `interact` one action.
4. `see` again to confirm state change.
5. Use `exec` only when GUI interaction is not the right tool.