Every Code is an open-source terminal coding agent maintained by JustEvery, originally forked from the OpenAI Codex repository. It brings LLM-driven coding agent workflows directly to the command line, enabling developers to prompt, inspect, and manipulate local codebases inside a fast terminal interface. Operating as a native CLI tool, Every Code executes local commands, edits files, and manages context in interaction loops. It incorporates protocol parity with upstream Responses APIs and implements the Model Context Protocol (MCP) to allow agent interaction with external tools, APIs, and workspace contexts. Built on a Rust toolchain with cross-platform build configurations, Every Code differentiates itself by maintaining direct upstream compatibility with core agent protocols while supporting structured tool invocation and containerized development setups. The project is open-source under a public repository on GitHub and distributed as standalone source builds managed through Cargo and Just runners.
MCP Protocol Parity — Supports the Model Context Protocol for connecting external development tools and data sources into the agent runtime. - Rust-Native Architecture — Utilizes a high-performance Rust codebase for low latency and minimal resource overhead. - Upstream Synchronization — Actively syncs and backports changes from upstream Codex protocols and Responses API specifications. - Reproducible Build Workflows — Integrates predefined Devcontainers, Justfile automations, and pinned buildifier configurations via DotSlash for consistent contributor environments. - CLI-Centric Workflow — Designed to run entirely in terminal sessions without requiring dedicated GUI IDE extensions.
Use cases
Use Case: Terminal Code Generation and Refactoring Developers can invoke the agent directly within their repository to analyze multi-file codebases, generate new implementations, or refactor legacy modules without leaving the terminal.
Use Case: External Tool Integration via MCP Teams can attach custom MCP servers to feed external telemetry, database schemas, or documentation endpoints directly into the agent's context during problem-solving sessions.
Use Case: Reproducible Development Environments Developers working across varied platforms can spin up identical agent environments using the included devcontainers and standard just commands.
Who it is for
Every Code is intended for systems developers, terminal power users, and engineers who want an open-source, Rust-based coding agent with native MCP support. It is less suitable for users looking for turnkey GUI IDE plugins or hosted managed agent services.
Install guide
Installation Build Every Code from source using Cargo (Rust toolchain required): bash git clone https://github.com/just-every/code.git cd code cargo build --release Alternatively, if using just: bash just build
First Run Configure your provider API key before launching the agent: bash export OPENAI_API_KEY="your-api-key" ./target/release/code --help
Example Session Run an interactive query or pass a command directly to the binary: bash ./target/release/code "Inspect the workspace and create unit tests for the parser module"
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