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# Hexai
Hexai, the AI addition for your Helix Editor (https://helix-editor.com) .. Other editors should work but weren't tested.
It has got improved capabilities for Go code understanding (for example, create unit tests from function), but other programming language work as well.
## Features
* LSP Code auto-completion
* LSP Code actions
* LSP in-editor chat with the LLM
* Stand-alone command line tool for LLM interaction
* TUI code-action runner (`hexai-tmux-action`) with Bubble Tea
- Includes a “Custom prompt” action (hotkey `p`) that opens your editor (`$HEXAI_EDITOR` or `$EDITOR`) on a temporary Markdown file.
* Support for OpenAI, GitHub Copilot, and Ollama
## Documentation
* [Configuration guide](docs/configuration.md)
* [Usage examples](docs/usage.md)
* [Helix + tmux quickstart](docs/tmux.md)
## Build and tasks
Hexai uses Mage for developer tasks. Install Mage, then run targets like build, dev, test, and install.
- Install Mage: `go install github.com/magefile/mage@latest`
- Build binaries: `mage build` (produces `hexai`, `hexai-lsp`, and `hexai-tmux-action`)
- Dev build (+ tests, vet, lint): `mage dev`
- Run tests: `mage test`
- Run tests with coverage: `go test ./... -cover`
- Full cross-package coverage and HTML report: `mage coverage` (writes `docs/coverage.html`)
- In restricted sandboxes/CI (no sockets), skip network-based tests:
- `HEXAI_TEST_SKIP_NET=1 go test ./... -cover`
- Install binaries to `GOPATH/bin`: `mage install`
Note: `mage lint` uses `golangci-lint`. Install via `mage devinstall` if needed.
## Install
Either use the Mage method as mentioned above, or install directly with:
- CLI: `go install codeberg.org/snonux/hexai/cmd/hexai@latest`
- LSP: `go install codeberg.org/snonux/hexai/cmd/hexai-lsp@latest`
- Action runner: `go install codeberg.org/snonux/hexai/cmd/hexai-tmux-action@latest`
## Hexai CLI
- When invoked without arguments, `hexai` opens your editor (`$HEXAI_EDITOR` or `$EDITOR`) on a temporary `.md` file to capture a prompt, and combines it with any piped stdin.
- With arguments, behavior is unchanged (no editor spawn).
## Tmux Status Line
See the [tmux integration guide](docs/tmux.md) for details on configuring the status line.
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