If you've tried more than one coding agent — Codex, Claude Code, OpenCode, or any of the growing list — you already know the problem. Each one is powerful on its own. Together, they're a mess.
You juggle terminal windows. You lose track of which agent is working on which branch. You switch between Discord, GitHub, and your IDE just to understand what happened in the last run. And when something goes wrong, you're piecing together logs from three different tools — assuming you can still find the terminal where the agent ran.
That's the problem we set out to solve with Codius. Not by building yet another coding agent, but by building the layer that sits on top of all of them — a command center where every agent, every session, and every review lives in one place.
The scattered-agent problem
Coding agents have gotten remarkably good at writing code. What they haven't gotten good at is working with each other — or with you.
Here's what a typical multi-agent workflow looks like today:
- You open a terminal for Codex to handle a refactor on one branch
- You spin up Claude Code in another window for a different feature on another branch
- You run OpenCode in a third to review the diff
- You manually copy context between them — file paths, error messages, decisions
- You hope nothing steps on anything else, because none of them know about each other
Each agent operates in isolation. There's no shared workspace, no unified review surface, no way to see what every agent is doing at a glance. The result is cognitive overhead that scales linearly with the number of agents you use. Use one agent and you're fine. Use three and you're spending more time managing tools than writing code.
We talked to developers who were running four, five, even six different agents across parallel branches. They had spreadsheets tracking which agent was on which task. They spent the first thirty minutes of every morning reconstructing what happened overnight — reading logs, checking Git refs, asking the agents to summarize their own work. The agents were working. The workflow around them was broken.
What Codius does differently
Codius is a single desktop application — open source, cross-platform — that treats coding agents as first-class citizens rather than terminal commands you babysit. It runs on macOS, Windows, Linux, iOS, Android, and the web from one codebase, so your workspace follows you regardless of device.
One workspace, many agents
Every Codius workspace is an isolated environment with its own Git worktree, agent sessions, terminals, and embedded browser. You can run multiple agents in parallel without them stepping on each other's changes. When you're ready, you review everything from one surface — the conversation, the diff, the terminal output, the running service, the browser preview — side by side in split panels.
The key insight is that isolation and visibility should go together. Each agent gets its own branch, its own working directory, its own sandbox. But you get a single window where all of them are visible. You don't switch contexts to see what's happening. You scroll.
Orchestration, not just execution
Codius doesn't just launch agents — it orchestrates them. You can chain agents together, pass context between them, and define workflows that combine their strengths. Want Codex to write a feature, Claude Code to review it, and OpenCode to document it? That's one workflow, not three terminal sessions you have to manually coordinate.
You can also schedule recurring agent work — run a security audit every Monday, regenerate API documentation on every release, or have an agent monitor your test suite and file issues when something breaks. These are things you'd normally write scripts for. In Codius, they're a schedule.
Review before merge
Every agent run in Codius produces a reviewable result. You see the diff, the conversation, the terminal output, and the browser state — all in one place. Nothing reaches your main branch without your approval.
This matters more than it sounds. The biggest risk with coding agents isn't that they write bad code — it's that bad code ships without anyone looking at it. When your workflow is "run the agent, check the diff later," "later" tends to become "never." Codius makes review the default, not an afterthought. The diff is right there. The conversation that produced it is right there. The decision to merge or reject is one click.
Your code stays on hosts you control
Codius gives you a transparent orchestration layer without turning your repository or local development environment into the product. Your code stays on your laptop, a private VM, or a dev server — wherever you choose to run the Codius host. The agent runs locally. The inference happens wherever your model provider runs it. Codius connects the two without sitting in between.
This isn't a cloud IDE. It's not a managed sandbox. It's your machine, your branches, your Git history — with a visual layer on top that makes multi-agent work manageable.
Open by design
The full Codius App is AGPL-3.0, auditable, and self-hostable. You can read every line of the code that's orchestrating your agents. You can run it on your own infrastructure. You can contribute to it.
We chose open source not as a marketing decision but as an architectural one. Agent orchestration is trust-critical software — it runs your code, it touches your repositories, it has access to your terminals. That kind of software should be auditable. The fact that you can read the source is the security model, not a feature page.
Codius also speaks open protocols. It supports the Agent Client Protocol for agent integration, MCP for tool use, and standard Git workflows for version control. There's no proprietary lock-in. If you stop using Codius tomorrow, your Git history, your branches, and your agents are exactly where you left them.
The model access question
Codius works with any provider you already use — bring your own API keys, your own subscriptions, your own self-hosted models. The App is free, and that's not a trial or a freemium tier. It's genuinely free, forever.
But we also know that managing API keys and model infrastructure is friction. So we offer Codius Coding Plans — Pro at $20/month and Max at $100/month — that give you hosted model access through an OpenAI-compatible API. Connect once, and every compatible agent launched by Codius receives the selected provider and default model automatically.
We designed the pricing around a principle we call cost-normalized usage. Instead of a flat token cap that punishes you for choosing a powerful model, your usage is measured in comparable units across all models. A $20 Pro plan buys roughly the same amount of work whether you're running a lightweight model for hours or a frontier reasoning model for fewer requests. You don't have to think about which model is "worth it" — they all draw from the same fair allowance.
Usage is also pooled across your entire organization. A five-person team on Pro shares the full monthly allowance, not five separate buckets that fragment and expire. And if you do exceed the included usage, optional top-ups are billed at 1.6× provider cost — a thin markup that we disclose openly because we think it's the most honest approach in the market.
Built for developers, not just teams
A lot of agent tooling is built for enterprises with dedicated platform teams and SRE budgets. Codius is built for the developer who wants power without ceremony.
- Open source — the full App is AGPL-3.0, auditable, and self-hostable
- Cross-device — desktop, mobile, and web from one codebase, so you can check on an agent run from your phone
- Agent-agnostic — works with the agents you already use, no vendor lock-in
- Keyboard-first — a command palette for everything, because reaching for the mouse in a terminal workflow is friction
- Optional hosted models — Coding Plans give you API access without managing infrastructure, but you can always bring your own provider
The Codius CLI exists for when you want the full power of the host without the GUI — headless runs, managed workspaces, scheduled agent work, and daemon administration from the terminal. It's a real command surface, not another coding agent. It works alongside the agents you already use.
The road ahead
We're just getting started. The next few months are about deeper agent integrations, smarter orchestration primitives, and making it even easier to go from "I have an idea" to "my agents are working on it."
We're building toward a world where you describe a task once, and the right agents pick it up, coordinate around it, and produce a reviewable result — without you playing air traffic controller. Where your phone buzzes because an agent finished a refactor, and you can open the review, approve the diff, and merge from anywhere. Where the gap between "I should fix this" and "my agents are fixing this" is one sentence.
If you're a developer who uses coding agents — or wants to — we'd love for you to try Codius and tell us what's missing. The best ideas for this tool come from the people using it every day. The GitHub repo is open, the issues are open, and the door is open.
The future of development isn't one agent that does everything. It's many agents, each excellent at what they do, coordinated by a tool that lets you stay in control. That's what Codius is for.