Cobalt

Gives coding agents (Codex, Cursor, OpenCode, Pi) a dedicated persistent VM per task with a live app preview and PR workflow.

Cobalt (cobaltcode.ai) · Developer tools and coding agents · tool

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Overview

Cobalt, built by Amaretto Software Labs and shipped at cobaltcode.ai, is a CLI/platform that gives each coding-agent task its own dedicated virtual machine with a full repository checkout, dependencies, and running services. Users describe a task in plain language, choose an agent (Codex, Cursor, OpenCode, or Pi) to run it, watch the result run live in the browser, and open a pull request from there. The VM persists after the session ends, keeping dependencies and services running so work can resume from any device in the same conversation and app state. It integrates with repositories hosted on GitHub and Azure DevOps.

This is a sourced directory entry. Features and capabilities are reported in the linked sources; this entry does not document independent Aymorphic testing.

Key features

  • Dedicated per-task VM with its own repo checkout, dependencies, and running services
  • Supports multiple underlying coding agents: Codex, Cursor, OpenCode, Pi
  • Live, clickable app preview instead of just a code diff
  • Persistent state across sessions and devices
  • GitHub and Azure DevOps repository integration

Use cases

  • Running coding-agent tasks without local environment setup
  • Reviewing an agent's change as a running app before merging
  • Parallel execution of multiple coding-agent tasks across isolated VMs
  • Resuming an agent session and its running app from a different device

Pricing

unknown (not published in the sourced material).

Pricing reflects the source record and may change. Confirm current terms with the provider.

Dates and sources

Released
Not listed
Record updated
23 Sept 2026
Record last checked
23 Sept 2026

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