cursor-cli-subagent
Use when the user wants Codex to delegate a bounded task to Cursor CLI / Cursor Agent as an external terminal subagent, especially with model composer-2.5, headless runs, secondary code review, or small implementation shards.
What this skill does
# Cursor CLI Subagent
Use native Windows Cursor Agent CLI as external subagent. Main Codex remains owner: inspect output, verify diffs/tests, integrate only correct work.
Docs checked 2026-06-03:
- Native Windows install: `irm 'https://cursor.com/install?win32=true' | iex`
- Local auth: `cursor-agent login`
- Headless: `cursor-agent -p --output-format text --model <model> "..."`
- Parameters: `--model`, `--workspace`, `--trust`, `--force`, `--mode ask|plan`
## Defaults
- Model: `composer-2.5`
- Output: `text`
- Mode: agent unless task should be read-only (`ask` or `plan`)
- Host: native Windows Cursor Agent from `%LOCALAPPDATA%\cursor-agent`
- No writes unless user asked for edits. Use `-ForceWrites` only for explicit write tasks.
## Workflow
1. Define bounded prompt: exact files, task, expected output, write/no-write.
2. Resolve wrapper path from installed skill dir:
```powershell
$CursorSubagent = "$env:USERPROFILE\.agents\skills\cursor-cli-subagent\scripts\invoke_cursor_subagent.ps1"
if (!(Test-Path $CursorSubagent)) {
$CursorSubagent = "$env:USERPROFILE\.codex\skills\cursor-cli-subagent\scripts\invoke_cursor_subagent.ps1"
}
```
3. Check auth/version:
```powershell
& $CursorSubagent -Version
& $CursorSubagent -Status
```
4. Read-only ask:
```powershell
& $CursorSubagent `
-Workspace "P:\some-repo" `
-Mode ask `
-Prompt "Say hello world. Do not edit files."
```
5. Planning run:
```powershell
& $CursorSubagent `
-Workspace "P:\some-repo" `
-Mode plan `
-Prompt "Inspect auth flow and propose minimal fix. Do not edit files."
```
6. Write run, only when user explicitly wants Cursor to edit:
```powershell
& $CursorSubagent `
-Workspace "P:\some-repo" `
-Prompt "Update exactly src/foo.ts to fix X. Run relevant tests." `
-ForceWrites
```
7. After any write run, inspect git diff and run local verification before reporting.
## Failure Handling
- `Not logged in` / no models: run `cursor-agent login` in local Windows PowerShell and finish browser auth.
- Missing CLI: install with `irm 'https://cursor.com/install?win32=true' | iex`.
- Unknown model: run `& $CursorSubagent -Models` and pick exact model id.
- PATH stale after install: wrapper uses `%LOCALAPPDATA%\cursor-agent\cursor-agent.ps1` directly.
## Guardrails
- Do not delegate broad architecture, ambiguous product decisions, secrets work, or destructive ops.
- Do not pass secrets in prompt.
- Treat Cursor output as untrusted subagent output until verified.
- Preserve user worktree changes; never revert unrelated diffs.
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