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strix/docs/advanced/configuration.mdx
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0xallam c88b2bbb99 Stabilize agent-browser launch and screenshot routing
AGENT_BROWSER_ARGS parser splits on commas, so any flag value
containing one (--disable-features=A,B, --window-size=1920,1080,
--lang=en-US,en) shredded into garbage positionals and Chromium
rejected the launch with "Multiple targets are not supported in
headless mode". Reduce to a comma-separated list of comma-free
flags that keeps the AutomationControlled anti-detection bit.

Default screenshot path now resolves inside the workspace root so
view_image accepts it; entrypoint pre-creates the dir at runtime
(the build-time mkdir is shadowed by the /workspace mount). Skill
examples updated to favor the no-arg form, plus brief fallback
guidance when view_image is unavailable on text-only models and a
viewport-resize note for sites that gate on real desktop dims.

Also drop the stale STRIX_DISABLE_BROWSER doc entry — no code
reference exists.
2026-05-25 21:28:36 -07:00

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---
title: "Configuration"
description: "Environment variables for Strix"
---
Configure Strix using environment variables or a config file.
## LLM Configuration
<ParamField path="STRIX_LLM" type="string" required>
Model name in LiteLLM format (e.g., `openai/gpt-5.4`, `anthropic/claude-sonnet-4-6`).
</ParamField>
<ParamField path="LLM_API_KEY" type="string">
API key for your LLM provider. Not required for local models or cloud provider auth (Vertex AI, AWS Bedrock).
</ParamField>
<ParamField path="LLM_API_BASE" type="string">
Custom API base URL. Also accepts `OPENAI_API_BASE`, `LITELLM_BASE_URL`, or `OLLAMA_API_BASE`.
</ParamField>
<ParamField path="LLM_TIMEOUT" default="300" type="integer">
Request timeout in seconds for LLM calls.
</ParamField>
<ParamField path="STRIX_LLM_MAX_RETRIES" default="5" type="integer">
Maximum number of retries for LLM API calls on transient failures.
</ParamField>
<ParamField path="STRIX_REASONING_EFFORT" default="high" type="string">
Control thinking effort for reasoning models. Valid values: `none`, `minimal`, `low`, `medium`, `high`, `xhigh`. Defaults to `medium` for quick scan mode.
</ParamField>
<ParamField path="STRIX_MEMORY_COMPRESSOR_TIMEOUT" default="30" type="integer">
Timeout in seconds for memory compression operations (context summarization).
</ParamField>
## Optional Features
<ParamField path="PERPLEXITY_API_KEY" type="string">
API key for Perplexity AI. Enables real-time web search during scans for OSINT and vulnerability research.
</ParamField>
<ParamField path="STRIX_TELEMETRY" default="1" type="string">
Global telemetry default toggle. Set to `0`, `false`, `no`, or `off` to disable both PostHog and OTEL unless overridden by per-channel flags below.
</ParamField>
<ParamField path="STRIX_OTEL_TELEMETRY" type="string">
Enable/disable OpenTelemetry run observability independently. When unset, falls back to `STRIX_TELEMETRY`.
</ParamField>
<ParamField path="STRIX_POSTHOG_TELEMETRY" type="string">
Enable/disable PostHog product telemetry independently. When unset, falls back to `STRIX_TELEMETRY`.
</ParamField>
<ParamField path="TRACELOOP_BASE_URL" type="string">
OTLP/Traceloop base URL for remote OpenTelemetry export. If unset, Strix keeps traces local only.
</ParamField>
<ParamField path="TRACELOOP_API_KEY" type="string">
API key used for remote trace export. Remote export is enabled only when both `TRACELOOP_BASE_URL` and `TRACELOOP_API_KEY` are set.
</ParamField>
<ParamField path="TRACELOOP_HEADERS" type="string">
Optional custom OTEL headers (JSON object or `key=value,key2=value2`). Useful for Langfuse or custom/self-hosted OTLP gateways.
</ParamField>
When remote OTEL vars are not set, Strix still writes complete run telemetry locally to:
```bash
strix_runs/<run_name>/events.jsonl
```
When remote vars are set, Strix dual-writes telemetry to both local JSONL and the remote OTEL endpoint.
## Docker Configuration
<ParamField path="STRIX_IMAGE" default="ghcr.io/usestrix/strix-sandbox:0.1.13" type="string">
Docker image to use for the sandbox container.
</ParamField>
<ParamField path="DOCKER_HOST" type="string">
Docker daemon socket path. Use for remote Docker hosts or custom configurations.
</ParamField>
<ParamField path="STRIX_RUNTIME_BACKEND" default="docker" type="string">
Runtime backend for the sandbox environment.
</ParamField>
## Sandbox Configuration
<ParamField path="STRIX_SANDBOX_EXECUTION_TIMEOUT" default="120" type="integer">
Maximum execution time in seconds for sandbox operations.
</ParamField>
<ParamField path="STRIX_SANDBOX_CONNECT_TIMEOUT" default="10" type="integer">
Timeout in seconds for connecting to the sandbox container.
</ParamField>
## Config File
Strix stores configuration in `~/.strix/cli-config.json`. You can also specify a custom config file:
```bash
strix --target ./app --config /path/to/config.json
```
**Config file format:**
```json
{
"env": {
"STRIX_LLM": "openai/gpt-5.4",
"LLM_API_KEY": "sk-...",
"STRIX_REASONING_EFFORT": "high"
}
}
```
## Example Setup
```bash
# Required
export STRIX_LLM="openai/gpt-5.4"
export LLM_API_KEY="sk-..."
# Optional: Enable web search
export PERPLEXITY_API_KEY="pplx-..."
# Optional: Custom timeouts
export LLM_TIMEOUT="600"
export STRIX_SANDBOX_EXECUTION_TIMEOUT="300"
```