yu-iskw executing-cursor-agent
Purpose
Use this skill to perform coding, research, or automation tasks using the cursor-agent CLI. It leverages Cursor's native execution modes to balance autonomy with safety.
Execution Modes
| Mode | Flag | Capability | Approval Required | Typical Tasks |
|---|---|---|---|---|
| Plan | --mode plan |
Read-only analysis, research, and planning. | No | Code audits, architectural planning. |
| Ask | --mode ask |
Q&A style for explanations and questions. | No | Explaining code, searching documentation. |
| Default | (none) | Full access (edits + shell execution). | Yes | Feature implementation, bug fixes. |
Implementation Workflow
1. Analyze & Classify
Analyze the user's intent to determine the appropriate mode.
- Plan Mode: Does the task only involve analyzing the codebase or proposing a plan without making changes?
- Ask Mode: Is the user asking a specific question or seeking an explanation?
- Default Mode: Does the task require modifying files or running shell commands?
2. Security Protocol
If the task requires Default Mode, you MUST obtain user approval before execution, as cursor-agent has full access to tools like bash and write.
Use the AskQuestion tool to confirm:
"I've detected that this task requires full agent permissions to modify files and execute commands. OK to proceed with
cursor-agent?"
Built-in security posture (no flags required):
- Sandbox on by default: OS-level sandboxing is enabled automatically on macOS, Linux, and Windows since early 2026. No
--sandboxflag is needed. - Network restricted by default: Outbound access is limited to GitHub, select web-search providers, and explicitly user-approved links. All other outbound requests are blocked.
- MCP approval required: Every third-party MCP connection triggers an explicit user-approval prompt. Always inspect available tools with
cursor-agent mcp list-tools <id>before approving any MCP server.
3. Execution
Execute cursor-agent using the determined mode. Use --print for non-interactive output suitable for the calling agent.
# Plan Mode
cursor-agent --print --mode plan "<prompt>"
# Ask Mode
cursor-agent --print --mode ask "<prompt>"
# Default Mode (requires approval)
cursor-agent --print "<prompt>"
4. Advanced Commands
Session Management
cursor-agent ls: List previous conversations.cursor-agent --resume [thread-id]: Resume a prior conversation by ID. Omit the ID to resume the most recent session.
Cloud Handoff
Prefix any interactive message with & to push the current conversation to a background Cloud Agent:
& <follow-up prompt>
The agent continues running asynchronously. Pick up the conversation at cursor.com/agents on the web or mobile app.
Context Management
@<file-or-folder>: Select specific files or folders to include in the agent's context./compress: Free up context window space by summarizing prior turns.
MCP Management
cursor-agent mcp list: View configured MCP servers.cursor-agent mcp list-tools <id>: Inspect tools available in a specific MCP./mcp list(interactive mode): Open an interactive menu to browse, enable, and configure MCP servers.
Rule Generation
cursor-agent generate-rule: Create new.cursorrulesor project-specific rules.
Configuration
This skill uses native cursor-agent flags. Ensure CURSOR_API_KEY is set in the environment if required, or run cursor-agent login first.
Model Selection
Cursor supports models from multiple providers. The active model depends on your subscription tier (defaults to Cursor's proprietary Composer 2 Fast or GPT-5.3-Codex on most paid plans). Switch models at any time via the in-session model picker, or set CURSOR_MODEL in the environment:
CURSOR_MODEL=claude-sonnet-4-6 cursor-agent --print "<prompt>"
Available providers: OpenAI (GPT-5.x), Anthropic (Claude Opus/Sonnet/Haiku 4.x), Google (Gemini 2.5/3), Cursor (Composer 2 Fast), DeepSeek, and local models.
Automations (Cloud — GA Mar 2026)
Cursor Automations are always-on cloud agents triggered by external events. They run in an isolated cloud sandbox with your configured MCPs, automatically verify their output, and post results (e.g., comments, PRs).
Supported triggers: GitHub PR opened/updated, Slack message, Linear issue created, PagerDuty alert, cron schedule, webhook.
Configure automations at cursor.com/settings/automations.
Example automation uses:
- Auto-review every PR for security issues and post a summary comment
- Triage Linear issues and assign labels based on content
- On PagerDuty alert: investigate recent commits, identify likely culprit, open a fix PR
Examples
Refer to references/usage-examples.md for concrete scenarios.