contenox

Contenox · AI coding agent

What will you make?

Build software with AI agents. Explore a project, plan a change, run the work, and inspect the result — all in one desktop application.

The Contenox workbench: workspace tree, an agent transcript with a repository tour, and an open source file in the editor.
Operator-controlledModel-independentOpen source
A source file open in the workspace editor beside a chat session.

Build and change software

Ask an agent to inspect a project, make changes, and explain what it did.

Tool calls in a transcript, each with its result and a Done or Error status.

See what your agents do

Inspect execution, tools, and decisions rather than treating the agent as a black box.

A list of hosted and local model providers, including ChatGPT, DeepSeek, Anthropic and Ollama.

Choose your own models

Connect local or hosted models and manage them through one application.

The harness

Your machine. Your models. Your policy.

Software engineering was never about syntax. AI changed how we build software; our tools didn’t.

Contenox is an open-source, vendor-neutral desktop app for AI-assisted work. You choose the model and provider. You write the rules, and they are enforced before an agent acts. It starts with software engineering. Sessions, approvals, and run history stay on your machine.

Install

Contenox for your machine.

An open-source, vendor-neutral workspace for AI-assisted engineering. No subscription. No hosted service.

Download for Linux Debian / Ubuntu · .deb

Also for Linux .rpm macOS .zip Windows .zip

Verify this download

Every installer is covered by SHA256SUMS and its detached GPG signature.

gpg --import contenox-release.asc
gpg --verify SHA256SUMS.asc SHA256SUMS
sha256sum -c SHA256SUMS

On macOS: shasum -a 256 -c SHA256SUMS

SHA256SUMS · signature · release key

The foundation

Built in the open.

Open source, local, and policy-enforced by default. You decide what an agent can read, run, and change before it acts.

Go the implementation
SQLite default state
PostgreSQL server state
NATS server messaging
Valkey server cache
MCP tool servers
ACP editor protocol

The Contenox Project is 100% Fair & Open Source under the Apache-2.0 License.

Contenox

Start with Contenox.

Install Contenox
Phyllobates terribilis Golden poison frog

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