Grass

About Grass

Grass provides a dedicated, always-ready virtual machine for running coding agents so you can keep long-running tasks off your local machine. It lets you point an agent at a ready sandbox, monitor progress from a phone, and approve or steer actions without any initial setup.

Review

Grass focuses on making coding agents accessible from mobile devices by hosting agent sessions in an isolated VM. The product emphasizes session continuity, simple approvals for actions that change state, and a short free trial so you can evaluate the workflow without a credit card.

Key Features

• Persistent VM for agent sessions that stays available even if your phone or laptop is offline, with brief auto-sleep to save resources.
• Pre-configured, agent-ready environments so agents can run without local environment setup.
• Mobile-first controls: monitor progress, approve tool execution, and push changes from a phone.
• BYOK (bring-your-own-key) security model so API keys remain on the user device rather than stored on Grass servers.
• Execution gating and contextual approvals for commands that mutate state, plus scoped auto-approvals for lower-risk actions.

Pricing and Value

Grass currently offers a free starter allocation of 10 hours of hosted compute with no credit card required. That lets you test long-running agent sessions and see if remote compute and mobile control fit your workflow. The team states the product is free to start; details for paid tiers are not fully disclosed yet, so those who require larger or sustained compute should expect a future pricing model and should watch for published plans.

Pros

• Keeps coding agents off your laptop, avoiding local resource drain during long tasks.
• Fast setup with pre-configured sandboxes so agents can run right away.
• Mobile monitoring and approval flow make it easy to steer agents while away from a workstation.
• Security-conscious BYOK approach reduces exposure of API credentials.
• Session persistence and async approvals reduce the chance of stalled work when you're not at your machine.

Cons

• Agent and workflow integrations are limited at launch; only select agents and environments are supported today.
• Full device-to-device session sync is a planned feature, so switching contexts between a local machine and the hosted VM can be incomplete for now.
• Long-term costs and pricing tiers are not yet clear beyond the initial free allocation.

Overall, Grass is a practical option for developers who run agent-driven refactors, background builds, or long-running coding tasks and want to monitor or approve work from a phone. It suits people who prefer keeping API credentials local and who want a quick way to try hosted agent compute without DevOps setup; teams that need broad agent support or guaranteed long-term pricing should keep an eye on upcoming features and plans.

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