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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 AI Code auto-completion
* LSP AI Code actions
* LSP in-editor chat with the LLM
* Stand-alone command line tool for LLM interaction
- Includes `--tps-simulation` to preview how fast a model would feel by streaming placeholder text or piped stdin at a chosen token-per-second rate
* Taskwarrior proxy for agent-managed project work
- Entrypoint: `ask`
- Automatically scopes Taskwarrior commands to `project:<repo> +agent`
* Parallel completions and CLI responses from multiple providers/models for side-by-side comparison
* **MCP server for prompt/runbook management** (`hexai-mcp-server`) - **⚠️ DEPRECATED/EXPERIMENTAL**
- Create, update, delete, and retrieve prompts via MCP protocol
- Automatic backups on every change (keeps last 10)
- Compatible with Claude Code CLI, Cursor, and other MCP clients
- File-based storage with JSONL format (git-friendly)
- Built-in meta-prompts for interactive prompt creation and management
* TUI AI 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.
* Tmux popup editor (`hexai-tmux-edit`) for composing longer AI agent prompts
- Opens `$EDITOR` in a tmux popup, pre-filled with the current prompt text
- Auto-detects Claude Code, Cursor, Amp, Aider (WIP), and other agents
- OpenAI Codex CLI already has native external-editor support via `Ctrl+G`
- Config-driven: add new agents via `[tmux_edit]` in config.toml
* Support for OpenAI, OpenRouter, Anthropic, and Ollama
> **Note on hexai-mcp-server:** This component is currently experimental and not actively maintained. The author manages prompts through slash commands and meta-commands in the hexai agent system, making the MCP server redundant for its original purpose. The code is preserved for potential future enhancements with different functionality beyond prompt management. See the [MCP documentation](docs/mcp-setup.md) for reference only.
## Documentation
* [Build and install guide](docs/buildandinstall.md)
* [Configuration guide](docs/configuration.md)
* [Usage examples](docs/usage.md)
* [Helix + tmux quickstart](docs/tmux.md)
* [MCP server setup guide](docs/mcp-setup.md) *(deprecated - reference only)*
* [Creating custom prompts](docs/mcp-prompts.md) *(deprecated - reference only)*
## Tmux Status Line
See the [tmux integration guide](docs/tmux.md) for details on configuring the status line.
## File Locations
hexai follows the XDG Base Directory Specification:
- **Configuration:** `~/.config/hexai/config.toml` (or `$XDG_CONFIG_HOME/hexai/`)
- Global settings, provider credentials, and preferences
- Project-specific: `.hexaiconfig.toml` at repository root
- **Cache:** `~/.local/hexai/cache/` (or `$XDG_CACHE_HOME/hexai/`)
- `stats.json` - LLM usage tracking (regenerable)
- `stats.lock` - File lock for stats access
- **State & Logs:** `~/.local/hexai/state/` (or `$XDG_STATE_HOME/state/`)
- `tmux-edit-history.jsonl` - History of text submitted via tmux popup
- `hexai-lsp-server.log` - LSP server debug logs
- `hexai-tmux-edit.log` - Tmux edit debug logs
- `hexai-mcp-server.log` - MCP server debug logs
- **Data:** `~/.local/hexai/data/` (or `$XDG_DATA_HOME/`)
- `prompts/user.jsonl` - User-created custom prompts (built-in prompts are compiled into the binary)
- **Temporary Files:** `/tmp/` (OS temp directory)
- `hexai-*.md` - Temporary editor workspaces (auto-deleted)
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