Agent, not autocomplete
OpenCode provides the execution loop. Cortex adds browser-selected workspaces, visible tool activity, interruption, session copying and conservative Markdown highlighting.
SELF-HOSTED CODING AGENT
Your development machine.
Agent first.
Cortex is a focused browser coding agent for autonomous software development. Run one self-contained binary locally or remotely, supervise parallel workspaces, and return to durable server-side conversations whenever you reconnect.
Install Cortex
$ go install github.com/cortex-go/cortex/cmd/cortex@latest
Release binaries and other installation methods →
Durable by default
SQLite-backed conversations, transcript events and agent-run evidence survive refreshes and move the source of truth beyond one browser's local storage.
One embedded binary
Nift builds the frontend and Go embeds it into Cortex. Linux, macOS and Windows releases cover both amd64 and arm64 without a separate runtime asset directory.
BUILT THROUGH DOGFOODING
Focused enough to understand. Durable enough to return to.
Cortex combines streamed OpenCode execution, recovery when headless runs omit final output, browser workspace selection, parallel conversations, first-run authentication, optional TOTP/Google sign-in, explicit credential isolation and transactional SQLite persistence.