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205 lines
6.3 KiB
Text
205 lines
6.3 KiB
Text
---
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title: "Server Configuration"
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description: "Server config file, CLI overrides, and environment variables"
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---
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## Config file
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The server config file at `~/.fabro/server.toml` controls how `fabro serve` behaves — API binding, authentication, run defaults, and more. The [Quick Start](/getting-started/quick-start) doesn't require one, but production deployments should configure it explicitly.
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### Full reference
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```toml title="server.toml"
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# Maximum concurrent workflow runs (default: 5)
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max_concurrent_runs = 8
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# Override the default data directory (default: ~/.fabro)
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data_dir = "/var/lib/fabro"
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[api]
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base_url = "https://fabro.example.com"
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[api.tls]
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cert = "/etc/fabro/tls/cert.pem"
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key = "/etc/fabro/tls/key.pem"
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ca = "/etc/fabro/tls/ca.pem"
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# Authentication strategies (array of Jwt or Mtls)
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[[api.authentication_strategies]]
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type = "Jwt"
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[web]
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url = "https://fabro-web.example.com"
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[web.auth]
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provider = "Github"
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allowed_usernames = ["alice", "bob"]
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[git]
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provider = "Github"
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app_id = "123456"
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client_id = "Iv1.abc123"
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[log]
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level = "info"
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[git.author]
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name = "fabro-bot"
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email = "fabro-bot@company.com"
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[git.webhooks]
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strategy = "tailscale_funnel"
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# Run defaults — applied to every run unless overridden by the run config
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[llm]
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model = "claude-sonnet-4-5"
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provider = "anthropic"
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[llm.fallbacks]
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anthropic = ["gemini", "openai"]
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[setup]
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commands = ["npm install"]
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timeout_ms = 120000
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[sandbox]
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provider = "daytona"
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[sandbox.daytona]
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auto_stop_interval = 60
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[sandbox.daytona.labels]
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team = "platform"
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[features]
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retros = true
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[checkpoint]
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exclude_globs = ["**/node_modules/**", "**/.cache/**"]
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[vars]
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default_branch = "main"
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```
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### CLI overrides
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Several `server.toml` settings can be overridden via `fabro serve` flags:
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| Flag | Default | Description |
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|---|---|---|
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| `--port` | `3000` | Port to listen on |
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| `--host` | `127.0.0.1` | Host address to bind to |
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| `--model` | — | Override default LLM model |
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| `--provider` | — | Override default LLM provider |
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| `--sandbox` | — | Override default sandbox provider |
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| `--max-concurrent-runs` | `5` | Maximum concurrent run executions |
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| `--config` | `~/.fabro/server.toml` | Path to server config file |
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| `--dry-run` | — | Execute with simulated LLM backend |
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CLI flags take precedence over `server.toml` values. See [Run Configuration — Precedence](/execution/run-configuration#precedence) for the full resolution order.
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### Run defaults
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The `[llm]`, `[setup]`, `[sandbox]`, `[checkpoint]`, and `[vars]` sections in `server.toml` act as defaults for every run. A run config TOML can override any of these. For `[vars]`, Daytona labels, and checkpoint exclude globs, values are **merged** — the run config wins on key collisions. All other fields use "first non-empty wins" precedence.
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### `[log]` section
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Configure the default log level without environment variables. Precedence: `FABRO_LOG` env var > `--debug` flag > `[log]` level > `"info"`.
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| Key | Description | Default |
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|---|---|---|
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| `level` | Log level: `error`, `warn`, `info`, `debug`, `trace` | `"info"` |
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### `[git.author]` section
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Customize the git author identity used for checkpoint commits. When not set, defaults to `fabro` / `fabro@local`.
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| Key | Description | Default |
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|---|---|---|
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| `name` | Git author name | `"fabro"` |
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| `email` | Git author email | `"fabro@local"` |
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The CLI can also set `[git.author]` in `user.toml` to override the server default.
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### `[git.webhooks]` section
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Enable automatic GitHub webhook delivery via Tailscale funnel. When configured, `fabro serve` binds a local HTTP listener, exposes it through `tailscale funnel`, and updates the GitHub App's webhook URL on startup. Incoming webhooks are verified with HMAC-SHA256.
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| Key | Description | Values |
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| `strategy` | Webhook delivery method | `"tailscale_funnel"` |
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Requires a configured GitHub App (`[git]` section with `app_id` and `client_id`) and the `GITHUB_APP_WEBHOOK_SECRET` environment variable.
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### `[checkpoint]` section
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Configure checkpoint behavior for all runs.
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| Key | Description |
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|---|---|
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| `exclude_globs` | Glob patterns for files to exclude from checkpoint commits (e.g. `["**/node_modules/**"]`) |
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Exclude globs from `server.toml` and run configs are merged (union, deduplicated). See [Run Configuration — Checkpoint](/execution/run-configuration#checkpoint) for per-run configuration.
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### `[features]` section
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Toggle experimental or opt-in features. All features default to `false`.
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| Key | Description |
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|---|---|
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| `retros` | Enable automatic [retro](/execution/retros) generation after workflow runs (experimental) |
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| `session_sandboxes` | Enable session sandboxes in the web UI |
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The same `[features]` section can be set in `fabro.toml` (project-level) to enable features per-project.
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## Environment variables
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Fabro reads environment variables from a `.env` file in the working directory (if present) and from the shell environment. Provider API keys are required for the models you want to use; everything else is optional.
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### LLM provider keys
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| Variable | Provider |
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| `ANTHROPIC_API_KEY` | Anthropic (Claude) |
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| `OPENAI_API_KEY` | OpenAI (GPT) |
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| `GEMINI_API_KEY` or `GOOGLE_API_KEY` | Google (Gemini) |
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| `KIMI_API_KEY` | Kimi |
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| `ZAI_API_KEY` | Zai (GLM) |
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| `MINIMAX_API_KEY` | Minimax |
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| `INCEPTION_API_KEY` | Inception (Mercury) |
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### Sandbox and tools
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| Variable | Description |
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| `DAYTONA_API_KEY` | Daytona cloud sandbox API key |
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| `BRAVE_SEARCH_API_KEY` | Brave Search API key (for the `web_search` tool) |
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### Server authentication
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| Variable | Description |
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| `FABRO_JWT_PRIVATE_KEY` | Ed25519 private key (base64-encoded PEM) for JWT signing |
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| `FABRO_JWT_PUBLIC_KEY` | Ed25519 public key (base64-encoded PEM) for JWT verification |
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| `SESSION_SECRET` | Session encryption secret (64-character hex string) |
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### GitHub App (optional)
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| Variable | Description |
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| `GITHUB_APP_CLIENT_SECRET` | GitHub App client secret |
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| `GITHUB_APP_WEBHOOK_SECRET` | GitHub App webhook secret |
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| `GITHUB_APP_PRIVATE_KEY` | GitHub App private key (base64-encoded) |
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### Slack integration (optional)
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| Variable | Description |
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| `FABRO_SLACK_APP_TOKEN` | Slack App-level token |
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| `FABRO_SLACK_BOT_TOKEN` | Slack Bot token |
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### Logging
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| Variable | Default | Description |
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| `FABRO_LOG` | `info` | Log level: `error`, `warn`, `info`, `debug` |
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