# Configure stealth and proxies

### Stealth mode

```bash
obscura fetch https://example.com --stealth
obscura serve --stealth
obscura mcp --stealth
```

What `--stealth` changes:

* Uses the wreq HTTP client with browser-matching TLS fingerprints (ClientHello, ALPN, cipher order).
* Loads a tracker blocklist that drops requests to known analytics and fingerprinting endpoints.
* Bundles webpki roots instead of relying on the system store.

Requires a build that includes the stealth feature. Release binaries on the Releases page include it. To build it yourself:

```bash
cargo build --release --features stealth
```

### What stealth handles

* Basic bot detection that checks TLS fingerprint or User-Agent.
* Sites that rely on third-party analytics being reachable.

### What stealth does not handle

* Cloudflare interactive challenges.
* Datadome and Akamai bot manager active challenges.
* CAPTCHAs.
* IP-based rate limiting (use proxies).

### Proxies

HTTP proxy:

```bash
obscura fetch https://example.com --proxy http://proxy.example.com:8080
obscura serve --proxy http://proxy.example.com:8080
```

With auth:

```bash
obscura fetch https://example.com --proxy http://user:pass@proxy.example.com:8080
```

SOCKS5:

```bash
obscura fetch https://example.com --proxy socks5://proxy.example.com:1080
```

### Custom User-Agent

```bash
obscura fetch https://example.com --user-agent "Mozilla/5.0 (...) ..."
obscura serve --user-agent "Mozilla/5.0 (...) ..."
```

Default UA matches a recent Chrome on the build platform.

### Combine

```bash
obscura serve \
  --stealth \
  --proxy http://user:pass@proxy.example.com:8080 \
  --user-agent "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 ..."
```


---

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