# embacle-server
Unified OpenAI-compatible REST API + MCP server that proxies requests to [embacle](https://github.com/dravr-ai/dravr-embacle) LLM runners. Any client that speaks the OpenAI chat completions API or MCP protocol can use it without modification.
## Install
```bash
cargo install embacle-server
```
## Usage
```bash
# Start with default provider on localhost:3000
embacle-server
# Specify provider and bind address
embacle-server --provider claude_code --port 8080 --host 0.0.0.0
# MCP-only mode via stdio (for editor/client integration)
embacle-server --transport stdio --provider copilot
```
## Endpoints
| `POST` | `/v1/chat/completions` | Chat completion (streaming and non-streaming) |
| `GET` | `/v1/models` | List available providers and models |
| `GET` | `/health` | Per-provider readiness check |
| `POST` | `/mcp` | MCP Streamable HTTP (JSON-RPC 2.0) |
## Model Routing
The `model` field determines which provider handles the request. Use a `provider:model` prefix to target a specific runner, or pass a bare model name to use the server's default.
```bash
# Explicit provider
curl http://localhost:3000/v1/chat/completions \
-H "Content-Type: application/json" \
-d '{"model": "claude:opus", "messages": [{"role": "user", "content": "hello"}]}'
# Default provider
curl http://localhost:3000/v1/chat/completions \
-H "Content-Type: application/json" \
-d '{"model": "gpt-4o", "messages": [{"role": "user", "content": "hello"}]}'
```
## Multiplex
Pass an array of models to fan out the same prompt to multiple providers concurrently:
```bash
curl http://localhost:3000/v1/chat/completions \
-H "Content-Type: application/json" \
-d '{"model": ["copilot:gpt-4o", "claude:opus"], "messages": [{"role": "user", "content": "hello"}]}'
```
Streaming is not supported for multiplex requests.
## Authentication
Optional. Set `EMBACLE_API_KEY` to require bearer token auth. When unset, all requests are allowed (localhost dev mode).
```bash
EMBACLE_API_KEY=my-secret embacle-server
curl http://localhost:3000/v1/models -H "Authorization: Bearer my-secret"
```
## Requirements
At least one supported CLI tool must be installed and authenticated:
- `claude` (Claude Code)
- `copilot` (GitHub Copilot)
- `cursor-agent` (Cursor Agent)
- `opencode` (OpenCode)
- `gemini` (Gemini CLI)
- `codex` (Codex CLI)
- `goose` (Goose CLI)
- `cline` (Cline CLI)
- `cn` (Continue CLI)
- `oz` (Warp)
- `kiro-cli` (Kiro CLI)
- `kilo` (Kilo Code)
## License
Apache-2.0 — see [LICENSE-APACHE](../../LICENSE-APACHE).
Full project documentation: [github.com/dravr-ai/dravr-embacle](https://github.com/dravr-ai/dravr-embacle)