T3 Code

A local server with desktop, web and mobile clients for controlling coding-agent harnesses installed on your own machines, with remote access built in.

Core features

• Sandboxed runsNo

  Docs and code searched for sandbox, Docker, container and VM, nothing found for agent runs. Agents run on your own machines, and managed-policy.md says of the permission limit: "It is not a sandbox".

  Source
• Diff review YesSource
• Agent coordination YesSource
• Scheduled tasks YesSource
• Event triggers YesSource
• Team collaboration Partial

  Guest links are a beta, cover one thread for 24 hours, and the owner approves each guest message. There are no shared projects or team accounts.

  Source
• API / CLI control YesSource

Pricing

Free and open source. T3 Connect is free for up to 3 machines 'for now'; linking a paid T3 Chat plan raises that to 10 (Pro) or 100 (Premier).

Platforms

macOS, Windows, Linux desktop; local web app served by the t3 CLI; iOS and Android apps.

Research notes

Integration read from code: apps/server/package.json depends on @anthropic-ai/claude-agent-sdk and effect-codex-app-server, and CodexAdapterV2 uses the app-server client. Codex can also connect directly with ChatGPT in T3 Code, with T3 managing the Codex install. The README says the project is very early and is mostly not accepting contributions. T3 Connect is a tunnel-based relay for reaching your own machines, not vendor-hosted execution. The FAQ says there is no way to pay for T3 Code; higher T3 Connect limits come from T3 Chat, a separate product, so pricing stays free.

Agents & providers

Codex Claude Code Cursor Grok Build OpenCode Google Antigravity fx Pi Kiro Muse Code ACP agents