What is mobile coding agent access?

Mobile coding agent access is the ability to monitor, interrupt, and redirect an AI coding agent from a mobile device — without being at a laptop. It means your agent keeps running while you step away, and you stay in control from your phone.

TL;DR

• AI coding agents like Claude Code and OpenCode run autonomously for 20–40 minutes or more
• Without mobile access, you have to be at a laptop to check progress or intervene
• Mobile coding agent access keeps you in the loop from anywhere — commute, meeting, overnight
• It covers monitoring output, approving or denying file writes, and redirecting agent behavior
• Grass is a mobile app built specifically for this workflow

What counts as mobile coding agent access?

Modern AI coding agents don't finish in seconds. A Claude Code session working through a refactor or feature implementation typically runs for 20–40 minutes of autonomous execution. During that time, the agent reads files, writes code, runs tests, and may pause at decision points waiting for your approval.

Mobile coding agent access means you can participate in that workflow from your phone. You open an app, see your agent's current status — what it's doing, what it's written, where it's stuck — and take action if needed. You can approve a pending file write, send a new instruction, or stop the agent entirely. All without opening a laptop.

In practice, it looks like this: you kick off a Claude Code task before a meeting, your agent hits an approval gate while you're in that meeting, and instead of waiting until you're back at your desk, you approve it in two taps from your phone. The agent continues. The task finishes.

Tools that provide mobile coding agent access today include Grass (for Claude Code and OpenCode), and Claude Code Remote Control (for Claude Code sessions via the Claude app, available on Max plans).

Why mobile coding agent access matters

The core problem is a timing mismatch. AI coding agents are built to run autonomously, but they still need human input at key moments — an approval before overwriting a file, a redirect when they've gone in the wrong direction, a check-in to confirm they're on track. Today, getting that input requires being at a laptop.

That constraint breaks the promise of autonomous coding. If you have to sit at your desk to supervise an agent, you haven't really offloaded the work — you've just changed what you're doing while you wait.

The scenarios where this hurts are specific:

• You start an overnight agent task. It hits a snag at 11pm. You find out at 9am.
• You're commuting. Your agent finishes in 15 minutes but you can't kick off the next task for another hour.
• You're in back-to-back meetings. Your agent has been idle for 45 minutes waiting for a one-word approval.

Mobile coding agent access eliminates that lag. Your agent's progress is visible on your phone. Approvals take seconds. Redirects happen in real time.

For developers running multiple agents in parallel, mobile access also functions as a lightweight mobile coding agent orchestration layer. You can see which agents are active, which are blocked, and which have finished, all from a single mobile dashboard.

How does Grass enable mobile coding agent access?

Grass is a mobile app built specifically for mobile coding agent access. It connects to running agent sessions — whether on your laptop or a transient dev server like Daytona — and gives you a live view of what each agent is doing.

From Grass, you can:

• See agent output and current task status in real time
• Approve or deny pending tool execution requests
• Send new instructions or stop an agent mid-task
• Monitor multiple agents from a single dashboard

Grass works with Claude Code and OpenCode. It supports both local laptop connections and remote dev servers via Daytona workspaces.

Related concepts

Transient dev server — A transient dev server is a short-lived, cloud-hosted development environment that spins up on demand and tears down when the task is complete. Grass connects to agents running on transient dev servers, which means mobile coding agent access works even when there's no persistent laptop session to connect to.

Remote coding session — A remote coding session is an active development environment running on a machine other than the one in front of you. Mobile coding agent access is a specific form of remote coding session interaction, focused on AI agents rather than interactive terminals.

Monitor a long-running agent overnight — The most common scenario for mobile coding agent access is an agent running unattended for hours. How to Monitor a Long-Running Coding Agent Overnight walks through the full setup — including handling approval gates and checking progress without opening a laptop.

Frequently asked questions

What is the difference between mobile coding agent access and SSH access from mobile?

SSH gives you a terminal on a remote machine — you interact with it the same way you would at your desk, just on a smaller screen. Mobile coding agent access is purpose-built for the agentic workflow: it surfaces live agent output, queues approval requests as native mobile modals, and lets you redirect the agent with a prompt rather than typing commands. You don't need to manage a terminal session or know where the agent's process is running.

How does mobile coding agent access work in practice?

You install the Grass CLI on the machine where your agent runs (npm install -g @grass-ai/ide), start it with grass start, and scan the QR code with the Grass mobile app. From that point, agent output streams to your phone over SSE. When the agent hits an agent approval gate, a native modal appears on your phone. You approve or deny with one tap. If you want to redirect the agent, you type a new prompt in the chat interface and it responds in real time.

Does mobile coding agent access require my laptop to stay on?

For local connections, yes — the Grass CLI server runs on your machine alongside the agent, so your machine needs to stay powered on. For remote connections via a transient dev server like Daytona, the agent runs on the remote server instead. Your laptop can be off entirely, and you connect to the Daytona workspace from your phone.

What types of agent actions can I approve or deny from mobile?

Claude Code runs in default permission mode, which means it pauses before executing bash commands, writing files, fetching URLs, and other potentially destructive operations. Each of these triggers an agent approval gate that appears as a native modal in Grass. You see a preview of the action — the file path, the command, or the URL — and approve or deny with one tap.

Can I use mobile coding agent access to manage multiple agents at once?

Yes. Grass supports multiple simultaneous server connections. Each connection can have its own active agent session, and the global permission manager surfaces approval requests from all connected servers regardless of which screen you're on. This is the basis of mobile coding agent orchestration — managing several parallel agent sessions from a single phone. See How to Manage Multiple Coding Agents from Your Phone for a step-by-step walkthrough.

How do I get started with mobile coding agent access using Grass?

Install the CLI with npm install -g @grass-ai/ide (requires Node.js 18+), navigate to your project directory, and run grass start. Grass auto-selects a port from the range 32100–32199 and displays a QR code. Download the Grass app from the iOS App Store (or use the Android PWA), scan the QR code, and you're connected. No account required, no waitlist.