gsd-browser

分类: 工具与效率 | 上传者: gsd-build | 下载: 0 | 版本: v1.0（最新）

用于 AI 代理的本机 Rust 浏览器自动化 CLI。当用户需要与网站交互时使用 - 导航页面、填写表单、单击按钮、截屏、提取结构化数据、运行断言、测试 Web 应用程序或自动执行任何浏览器任务。触发器包括“打开网站”、“填写表单”、“单击按钮”、“截取屏幕截图”、“从页面抓取数据”、“测试此 Web 应用程序”、“登录到站点”、“自动化浏览器操作”、“视觉回归测试”、“检查提示注入”或任何需要编程 Web 交互的任务的请求。

更新日志: Source: GitHub https://github.com/gsd-build/gsd-browser

目录结构

当前层级: tree/main/

📁 .bg-shell/
- 📄 manifest.json 2 B
📁 .github/
- 📁 workflows/
  - 📄 release.yml 2.4 KB
📁 cli/
- 📁 src/
  - 📁 daemon/
    
    📁 handlers/
    
    📄 advanced.rs 9.1 KB
    
    📄 assert_cmd.rs 21.0 KB
    
    📄 auth_vault.rs 8.4 KB
    
    📄 batch.rs 5.3 KB
    
    📄 codegen.rs 10.4 KB
    
    📄 device.rs 7.1 KB
    
    📄 extract.rs 4.9 KB
    
    📄 forms.rs 17.7 KB
    
    📄 har.rs 6.6 KB
    
    📄 inspect.rs 13.1 KB
    
    📄 intent.rs 21.5 KB
    
    📄 interaction.rs 27.8 KB
    
    📄 mod.rs 2.1 KB
    
    📄 navigate.rs 5.6 KB
    
    📄 network_mock.rs 13.8 KB
    
    📄 pages.rs 7.1 KB
    
    📄 pdf.rs 4.3 KB
    
    📄 refs.rs 20.8 KB
    
    📄 screenshot.rs 5.8 KB
    
    📄 session.rs 13.6 KB
    
    📄 state_persist.rs 7.4 KB
    
    📄 timeline.rs 1.1 KB
    
    📄 traces.rs 4.8 KB
    
    📄 visual_diff.rs 8.9 KB
    
    📄 wait.rs 9.4 KB
    
    📄 capture.rs 4.1 KB
    
    📄 helpers.rs 8.8 KB
    
    📄 logs.rs 11.9 KB
    
    📄 mod.rs 30.7 KB
    
    📄 settle.rs 8.2 KB
    
    📄 state.rs 10.5 KB
  - 📄 daemon_client.rs 8.2 KB
  - 📄 main.rs 57.1 KB
  - 📄 output.rs 65.1 KB
- 📄 Cargo.toml 1.1 KB
📁 common/
- 📁 src/
  - 📄 chrome.rs 1.5 KB
  - 📄 config.rs 17.4 KB
  - 📄 ipc.rs 1.2 KB
  - 📄 lib.rs 3.6 KB
  - 📄 types.rs 6.5 KB
- 📄 Cargo.toml 381 B
📁 gsd-browser-skill/
- 📁 references/
  - 📄 command-reference.md 8.8 KB
  - 📄 configuration.md 2.2 KB
  - 📄 error-recovery.md 3.6 KB
  - 📄 semantic-intents.md 2.4 KB
  - 📄 snapshot-and-refs.md 2.6 KB
- 📁 workflows/
  - 📄 debug-and-diagnose.md 2.9 KB
  - 📄 navigate-and-interact.md 4.7 KB
  - 📄 scrape-and-extract.md 4.7 KB
  - 📄 setup-and-configure.md 3.1 KB
  - 📄 test-and-assert.md 6.1 KB
- 📄 SKILL.md 4.2 KB
📁 npm/
- 📁 scripts/
  - 📄 postinstall.js 4.0 KB
- 📄 .npmignore 159 B
- 📄 package.json 1.0 KB
📁 tests/
- 📄 verify-s01.sh 6.2 KB
- 📄 verify-s02.sh 12.6 KB
- 📄 verify-s03.sh 13.4 KB
- 📄 verify-s04.sh 10.8 KB
- 📄 verify-s05.sh 22.2 KB
- 📄 verify-s06.sh 9.9 KB
📄 .gitignore 256 B
📄 AGENTS.md 995 B
📄 Cargo.lock 54.7 KB
📄 Cargo.toml 692 B
📄 install.sh 13.6 KB
📄 LICENSE-APACHE 11.0 KB
📄 LICENSE-MIT 1.1 KB
📄 README.md 6.0 KB
📄 SKILL.md 23.9 KB

SKILL.md

---
name: gsd-browser
description: >
  Native Rust browser automation CLI for AI agents. Use when the user needs to
  interact with websites — navigating pages, filling forms, clicking buttons,
  taking screenshots, extracting structured data, running assertions, testing
  web apps, or automating any browser task. Triggers include requests to
  "open a website", "fill out a form", "click a button", "take a screenshot",
  "scrape data from a page", "test this web app", "login to a site",
  "automate browser actions", "visual regression test", "check for prompt
  injection", or any task requiring programmatic web interaction.
allowed-tools: Bash(gsd-browser:*), Bash(gsd-browser *)
---

# Browser Automation with gsd-browser

## Critical Rules

1. **The daemon auto-starts.** Never run `gsd-browser daemon start` — it starts on first command. Only use `daemon stop` to clean up.
2. **Always re-snapshot after page changes.** Refs are versioned (`@v1:e1`). After navigation, form submission, or dynamic content loading, old refs are stale. Run `gsd-browser snapshot` to get fresh refs.
3. **Use `--json` when parsing output.** Use text mode when reading output yourself. Use `--json` when you need to extract values programmatically (e.g., checking assertion results, parsing snapshot refs).
4. **Positional args have no flag prefix.** Commands like `click`, `type`, `hover` take positional args — do NOT add `--selector`. See exact syntax in command reference below.

## Core Workflow

Every browser automation follows this pattern:

1. **Navigate**: `gsd-browser navigate <url>`
2. **Snapshot**: `gsd-browser snapshot` (get versioned refs like `@v1:e1`, `@v1:e2`)
3. **Interact**: Use refs to click, fill, hover
4. **Re-snapshot**: After navigation or DOM changes, get fresh refs

```bash
gsd-browser navigate https://example.com/form
gsd-browser snapshot
# Output: @v1:e1 [input type="email"], @v1:e2 [input type="password"], @v1:e3 [button] "Submit"

gsd-browser fill-ref @v1:e1 "user@example.com"
gsd-browser fill-ref @v1:e2 "password123"
gsd-browser click-ref @v1:e3
gsd-browser wait-for --condition network_idle
gsd-browser snapshot  # REQUIRED — old refs are now stale
```

## Command Chaining

Commands can be chained with `&&` in a single shell invocation. The browser persists between commands via a background daemon.

```bash
# Chain navigate + wait + snapshot
gsd-browser navigate https://example.com && gsd-browser wait-for --condition network_idle && gsd-browser snapshot

# Chain multiple interactions
gsd-browser fill-ref @v1:e1 "user@example.com" && gsd-browser fill-ref @v1:e2 "password123" && gsd-browser click-ref @v1:e3
```

**When to chain:** Use `&&` when you don't need intermediate output. Run commands separately when you need to parse output first (e.g., snapshot to discover refs, then interact).

---

## Command Reference

Argument syntax: `<arg>` = required positional, `[arg]` = optional positional, `--flag` = named option. Do NOT add `--` prefix to positional args.

### Navigation

```bash
gsd-browser navigate <url>                        # Navigate to a URL
gsd-browser back                                   # Go back in browser history
gsd-browser forward                                # Go forward in browser history
gsd-browser reload                                 # Reload the current page
```

### Interaction

All selectors are **positional** — do NOT use `--selector`.

```bash
# Click
gsd-browser click <selector>                       # Click by CSS selector
gsd-browser click --x 100 --y 200                  # Click by coordinates (no selector)

# Type — positional: <selector> <text>
gsd-browser type <selector> <text>                 # Atomic fill (replaces content)
gsd-browser type <selector> <text> --slowly        # Character-by-character
gsd-browser type <selector> <text> --clear-first   # Clear field before typing
gsd-browser type <selector> <text> --submit        # Press Enter after typing

# Other interaction — all positional selectors
gsd-browser press <key>                            # Press key: Enter, Escape, Tab, Meta+A
gsd-browser hover <selector>                       # Hover over element
gsd-browser scroll --direction down                # Scroll down 300px (default)
gsd-browser scroll --direction up --amount 500     # Scroll up 500px
gsd-browser select-option <selector> <option>      # Select dropdown by label or value
gsd-browser set-checked <selector> --checked       # Check checkbox/radio (omit --checked to uncheck)
gsd-browser drag <source-selector> <target-selector>  # Drag-and-drop
gsd-browser upload-file <selector> <file>...       # Set files on <input type="file">
gsd-browser set-viewport --preset mobile           # Preset: mobile, tablet, desktop, wide
gsd-browser set-viewport --width 1920 --height 1080  # Custom dimensions
```

### Snapshot & Refs

Refs are versioned (`@v1:e1`, `@v2:e3`). The version increments each snapshot. **Old refs become stale after page changes — always re-snapshot.**

```bash
# Take snapshot
gsd-browser snapshot                               # Snapshot interactive elements, assign refs
gsd-browser snapshot --selector "form"             # Scope to a CSS selector
gsd-browser snapshot --mode <mode>                 # Semantic mode (see below)
gsd-browser snapshot --limit 80                    # Increase element limit (default: 40)

# Use refs — all positional
gsd-browser get-ref <ref>                          # Get metadata for a ref
gsd-browser click-ref <ref>                        # Click element by ref
gsd-browser hover-ref <ref>                        # Hover element by ref
gsd-browser fill-ref <ref> <text>                  # Type into element by ref
```

**Snapshot modes** (`--mode`):

| Mode | What it captures |
|------|-----------------|
| `interactive` | Buttons, inputs, links, selects (default) |
| `form` | Form fields with labels and current values |
| `dialog` | Elements inside open dialogs/modals |
| `navigation` | Links and nav elements |
| `errors` | Error messages, validation warnings |
| `headings` | Heading elements (h1-h6) for page structure |
| `visible_only` | All visible elements regardless of interactivity |

### Inspection

```bash
gsd-browser accessibility-tree                     # Full accessibility tree (roles, names, states)
gsd-browser find --text "Sign In"                  # Find elements by text (case-insensitive)
gsd-browser find --role button                     # Find by ARIA role
gsd-browser find --selector ".my-class"            # Find by CSS selector
gsd-browser find --role link --limit 50            # Increase limit (default: 20)
gsd-browser page-source                            # Get raw HTML of page
gsd-browser page-source --selector "main"          # Scoped HTML source
gsd-browser eval '<js-expression>'                 # Evaluate JavaScript in page context
```

### Assertions

Run explicit pass/fail checks against the current page state. Prefer this over inferring success from output.

```bash
gsd-browser assert --checks '[
  {"kind": "url_contains", "text": "/dashboard"},
  {"kind": "text_visible", "text": "Welcome"},
  {"kind": "selector_visible", "selector": "#user-menu"},
  {"kind": "value_equals", "selector": "input[name=email]", "value": "user@test.com"},
  {"kind": "no_console_errors"},
  {"kind": "no_failed_requests"}
]'
```

**Assertion kinds:** `url_contains`, `text_visible`, `text_hidden`, `selector_visible`, `selector_hidden`, `value_equals`, `no_console_errors`, `no_failed_requests`, `request_url_seen`, `response_status`, `console_message_matches`, `network_count`, `console_count`, `no_console_errors_since`, `no_failed_requests_since`, `element_count`.

### Batch Execution

Execute multiple steps in one call to reduce round trips. Stops on first failure by default.

```bash
gsd-browser batch --steps '[
  {"action": "navigate", "url": "https://example.com"},
  {"action": "wait_for", "condition": "network_idle"},
  {"action": "click", "selector": "#login-btn"},
  {"action": "type", "selector": "input[name=email]", "text": "user@test.com"},
  {"action": "type", "selector": "input[name=password]", "text": "secret", "submit": true},
  {"action": "assert", "checks": [{"kind": "url_contains", "text": "/dashboard"}]}
]'

# With --summary-only to reduce output
gsd-browser batch --steps '[...]' --summary-only
```

**Batch actions:** `navigate`, `click`, `type`, `key_press`, `wait_for`, `assert`, `click_ref`, `fill_ref`.

### Wait Conditions

```bash
gsd-browser wait-for --condition selector_visible --value "#content"
gsd-browser wait-for --condition selector_hidden --value ".spinner"
gsd-browser wait-for --condition url_contains --value "/dashboard"
gsd-browser wait-for --condition network_idle
gsd-browser wait-for --condition delay --value 2000
gsd-browser wait-for --condition text_visible --value "Success"
gsd-browser wait-for --condition text_hidden --value "Loading"
gsd-browser wait-for --condition request_completed --value "/api/data"
gsd-browser wait-for --condition console_message --value "ready"
gsd-browser wait-for --condition element_count --value ".item" --threshold ">=5"
gsd-browser wait-for --condition region_stable --value "#content"

# Custom timeout (default: 10000ms)
gsd-browser wait-for --condition selector_visible --value "#slow" --timeout 30000
```

### Forms (Smart Fill)

Analyze forms and fill them by field label, name, placeholder, or aria-label — no selectors needed.

```bash
# Analyze form structure
gsd-browser analyze-form
gsd-browser analyze-form --selector "#signup-form"

# Fill by field identifiers (resolved: label -> name -> placeholder -> aria-label)
gsd-browser fill-form --values '{"Email": "a@b.com", "Password": "secret", "Country": "US"}'
gsd-browser fill-form --values '{"Email": "a@b.com"}' --submit  # Fill and click submit
gsd-browser fill-form --values '{"Email": "a@b.com"}' --selector "#login-form"
```

### Intent-Based Interaction

Find and act on elements by semantic intent — no selectors or refs needed. Intents are predefined categories, not free-form text.

```bash
# Find top candidates for an intent (returns scored matches with selectors)
gsd-browser find-best --intent submit_form
gsd-browser find-best --intent accept_cookies
gsd-browser find-best --intent primary_cta --scope "#modal"

# Act: find best match and click/focus it in one call
gsd-browser act --intent submit_form
gsd-browser act --intent accept_cookies
gsd-browser act --intent fill_email
```

**Intents (15):**

| Intent | Action | Description |
|--------|--------|-------------|
| `submit_form` | click | Submit buttons, form actions |
| `close_dialog` | click | Modal/dialog close buttons |
| `primary_cta` | click | Primary call-to-action elements |
| `search_field` | focus | Search inputs and searchboxes |
| `next_step` | click | Next/continue/proceed buttons |
| `dismiss` | click | Dismiss overlays, banners, toasts |
| `auth_action` | click | Login/signup/register buttons |
| `back_navigation` | click | Back/previous navigation links |
| `fill_email` | focus | Email input fields |
| `fill_password` | focus | Password input fields |
| `fill_username` | focus | Username/login input fields |
| `accept_cookies` | click | Cookie consent accept buttons |
| `main_content` | click | Main content area (`<main>`, `<article>`, semantic markup required) |
| `pagination_next` | click | Next page in pagination |
| `pagination_prev` | click | Previous page in pagination |

### Pages & Frames

Page and frame IDs are **positional** — do NOT use `--id`.

```bash
gsd-browser list-pages                             # List all open tabs
gsd-browser switch-page <id>                       # Switch to tab by ID (positional)
gsd-browser close-page <id>                        # Close a tab by ID (positional)

gsd-browser list-frames                            # List all frames (main + iframes)
gsd-browser select-frame --name "iframe-name"      # Select frame by name
gsd-browser select-frame --url-pattern "embed"     # Select frame by URL substring
gsd-browser select-frame --index 0                 # Select by index
gsd-browser select-frame --name main               # Return to main frame
```

### Diagnostics

```bash
gsd-browser console                                # Get console log entries (clears buffer)
gsd-browser console --no-clear                     # Read without clearing
gsd-browser network                                # Get network log entries
gsd-browser dialog                                 # Get dialog events (alert, confirm, prompt)
gsd-browser timeline                               # Query the action timeline
gsd-browser session-summary                        # Diagnostic summary of current session
gsd-browser debug-bundle                           # Full debug bundle: screenshot + logs + timeline + a11y tree
```

### Visual

```bash
gsd-browser screenshot                             # Screenshot to stdout (JPEG base64)
gsd-browser screenshot --output page.png           # Write to file
gsd-browser screenshot --format png                # Force PNG format
gsd-browser screenshot --full-page                 # Full scrollable page
gsd-browser screenshot --selector "#hero"          # Crop to element (always PNG)
gsd-browser screenshot --quality 50                # JPEG quality 1-100 (default: 80)

gsd-browser zoom-region --x 100 --y 200 --width 400 --height 300  # Capture region
gsd-browser zoom-region --x 0 --y 0 --width 200 --height 200 --scale 3  # Upscale

gsd-browser save-pdf                               # Save page as PDF (A4 default)
gsd-browser save-pdf --output report.pdf           # Custom output path
gsd-browser save-pdf --format Letter               # Page format: A4, Letter, Legal, Tabloid
```

### Visual Regression

```bash
# First run: saves baseline screenshot
gsd-browser visual-diff --name "homepage"

# Subsequent runs: compare against baseline, report mismatch
gsd-browser visual-diff --name "homepage"
gsd-browser visual-diff --name "homepage" --threshold 0.05   # Stricter tolerance (0-1)
gsd-browser visual-diff --selector "#hero" --name "hero"     # Scope to element
gsd-browser visual-diff --name "homepage" --update-baseline  # Reset baseline
```

### Structured Data Extraction

```bash
# Single item
gsd-browser extract --schema '{
  "type": "object",
  "properties": {
    "title": {"_selector": "h1", "_attribute": "textContent"},
    "price": {"_selector": ".price", "_attribute": "textContent"},
    "image": {"_selector": "img.product", "_attribute": "src"}
  }
}'

# Array of items
gsd-browser extract --selector ".product-card" --multiple --schema '{
  "type": "object",
  "properties": {
    "name": {"_selector": "h3", "_attribute": "textContent"},
    "price": {"_selector": ".price", "_attribute": "textContent"}
  }
}'
```

### Network Mocking

```bash
gsd-browser mock-route --url "**/api/users*" --body '[{"name":"Alice"}]' --status 200
gsd-browser mock-route --url "**/api/data" --body '{"ok":true}' --delay 3000  # Slow response
gsd-browser block-urls "**/analytics*" "**/ads*"   # Block URL patterns (positional)
gsd-browser clear-routes                           # Remove all mocks and blocks
```

### Device Emulation

```bash
gsd-browser emulate-device <device-name>           # Full device emulation (positional)
gsd-browser emulate-device "iPhone 15"
gsd-browser emulate-device "Pixel 7"
gsd-browser emulate-device "iPad Pro 11"
gsd-browser emulate-device list                    # Show all available presets
```

**Warning:** Device emulation recreates the browser context — current page state and cookies are lost.

### State & Auth

```bash
# Save/restore browser state (cookies, localStorage, sessionStorage)
gsd-browser save-state --name "logged-in"
gsd-browser restore-state --name "logged-in"

# Auth vault (encrypted credentials)
gsd-browser vault-save --profile github --url https://github.com/login \
  --username user --password "secret"
gsd-browser vault-login --profile github
gsd-browser vault-list                             # List profiles (no secrets shown)
```

Vault encryption requires `GSD_BROWSER_VAULT_KEY` env var set **before the daemon starts**. If the daemon is already running, stop it first, set the var, then run your vault command.

### Tracing & Recording

```bash
gsd-browser trace-start                            # Start CDP performance trace
gsd-browser trace-start --name "checkout-flow"     # Named trace
gsd-browser trace-stop                             # Stop and write trace to disk
gsd-browser trace-stop --name "checkout.json"      # Custom output filename

gsd-browser har-export                             # Export network as HAR 1.2 JSON
gsd-browser har-export --filename "session.har"    # Custom output path

gsd-browser generate-test                          # Generate Playwright test from timeline
gsd-browser generate-test --name "login-flow" --output tests/login.spec.ts
```

### Security

```bash
gsd-browser check-injection                        # Scan for prompt injection in page content
gsd-browser check-injection --include-hidden       # Include hidden/invisible text (default: true)
```

### Action Cache

Reduce repeated element lookups by caching intent-to-selector mappings.

```bash
gsd-browser action-cache --action stats            # Show cache metrics
gsd-browser action-cache --action get --intent submit_form  # Look up cached selector
gsd-browser action-cache --action put --intent submit_form --selector "#submit-btn" --score 0.95
gsd-browser action-cache --action clear            # Flush cache
```

### Daemon Management

The daemon auto-starts on first command. You almost never need these.

```bash
gsd-browser daemon stop                            # Stop daemon (clean up when done)
gsd-browser daemon health                          # Health check (returns PID)
gsd-browser daemon start                           # Explicit start (rarely needed)
```

---

## Global Options

Available on all commands:

| Flag | Description |
|------|-------------|
| `--json` | Output as JSON (use when parsing output programmatically) |
| `--browser-path <path>` | Path to Chrome/Chromium binary |
| `--session <name>` | Named session for parallel browser instances |

---

## Error Recovery

### Stale refs

```
Error: resolve_ref: JS evaluation failed: ref @v1:e3 not found
```

Refs become stale after page changes. Fix: re-snapshot and use the new version.

```bash
gsd-browser snapshot        # Get fresh refs (@v2:eN)
gsd-browser click-ref @v2:e1
```

### Click/type timeouts

```
Error: click timed out after 10s for: #submit-btn
```

The element may not be visible, may be behind an overlay, or may not exist. Try:

```bash
gsd-browser find --selector "#submit-btn"          # Verify element exists
gsd-browser scroll --direction down                # Scroll it into view
gsd-browser wait-for --condition selector_visible --value "#submit-btn"  # Wait for it
gsd-browser click "#submit-btn"                    # Retry
```

### Empty console/network logs

Console and network buffers start fresh each navigation. If you need logs from a specific action, check them **before** navigating away:

```bash
gsd-browser navigate https://example.com
gsd-browser eval "fetch('/api/data')"
gsd-browser network                                # Check network BEFORE navigating away
```

### Cookie banners / overlays blocking interaction

Many sites show consent banners that block clicks. Dismiss them first:

```bash
gsd-browser act --intent accept_cookies            # Auto-find and click accept button
gsd-browser act --intent dismiss                   # Or dismiss generic overlays
```

### Daemon won't start

```
Error: daemon did not start within 10s
```

Usually a stale Chrome lock file. Fix:

```bash
gsd-browser daemon stop                            # Stop any existing daemon
rm -f /tmp/chromiumoxide-runner/SingletonLock       # Remove stale lock
gsd-browser daemon health                          # Retry (auto-starts)
```

---

## Common Patterns

### Form Submission

```bash
gsd-browser navigate https://example.com/signup
gsd-browser analyze-form                           # Discover field labels and types
gsd-browser fill-form --values '{"Full Name": "Jane Doe", "Email": "jane@example.com", "State": "California"}' --submit
gsd-browser wait-for --condition network_idle
gsd-browser assert --checks '[{"kind": "text_visible", "text": "Welcome"}]'
```

### Login Flow (Refs)

```bash
gsd-browser navigate https://app.example.com/login
gsd-browser act --intent accept_cookies            # Dismiss cookie banner if present
gsd-browser snapshot
# Read snapshot output to find email, password, and submit refs
gsd-browser fill-ref @v1:e1 "$USERNAME"
gsd-browser fill-ref @v1:e2 "$PASSWORD"
gsd-browser click-ref @v1:e3
gsd-browser wait-for --condition url_contains --value "/dashboard"
gsd-browser save-state --name "myapp-auth"         # Save for reuse
```

### Login Flow (Vault)

```bash
# Save credentials once (encrypted at rest)
gsd-browser vault-save --profile myapp \
  --url https://app.example.com/login \
  --username user@example.com \
  --password "$PASSWORD"

# Login in any future session
gsd-browser vault-login --profile myapp
gsd-browser wait-for --condition url_contains --value "/dashboard"
```

### Reuse Saved Auth

```bash
gsd-browser restore-state --name "myapp-auth"
gsd-browser navigate https://app.example.com/dashboard  # Already logged in
```

### Data Scraping

```bash
gsd-browser navigate https://example.com/products
gsd-browser extract --selector ".product" --multiple --schema '{
  "type": "object",
  "properties": {
    "name": {"_selector": ".title", "_attribute": "textContent"},
    "price": {"_selector": ".price", "_attribute": "textContent"},
    "link": {"_selector": "a", "_attribute": "href"}
  }
}'
```

### Visual Regression Testing

```bash
# Establish baseline (first run)
gsd-browser navigate https://example.com
gsd-browser visual-diff --name "home-page"

# Later: compare current state
gsd-browser navigate https://example.com
gsd-browser visual-diff --name "home-page"
# Output: similarity %, diff pixel count, diff image path
```

### Network Mocking for Testing

```bash
gsd-browser mock-route --url "**/api/users" --body '{"error":"server error"}' --status 500
gsd-browser navigate https://app.example.com
gsd-browser assert --checks '[{"kind": "text_visible", "text": "Something went wrong"}]'
gsd-browser clear-routes                           # Clean up mocks
```

### Parallel Sessions

```bash
gsd-browser --session site1 navigate https://site-a.com
gsd-browser --session site2 navigate https://site-b.com

gsd-browser --session site1 snapshot
gsd-browser --session site2 snapshot

# Clean up both
gsd-browser --session site1 daemon stop
gsd-browser --session site2 daemon stop
```

### Performance Audit

```bash
gsd-browser navigate https://example.com
gsd-browser trace-start --name "perf-audit"
# ... interact with the page ...
gsd-browser trace-stop --name "perf-audit.json"
gsd-browser har-export --filename "network.har"
```

### Prompt Injection Scanning

```bash
gsd-browser navigate https://untrusted-page.com
gsd-browser check-injection
# Returns severity-rated findings for visible and hidden injection patterns
```

---

## Configuration

### Config Files (TOML)

gsd-browser loads config with 5-layer merge precedence:

1. Compiled defaults
2. User config: `~/.gsd-browser/config.toml`
3. Project config: `./gsd-browser.toml`
4. Environment variables: `GSD_BROWSER_*`
5. CLI flags (highest priority)

Example `gsd-browser.toml`:

```toml
[browser]
path = "/usr/bin/chromium"

[daemon]
port = 9222
host = "127.0.0.1"

[screenshot]
quality = 90
format = "png"
full_page = false

[settle]
timeout_ms = 500
poll_ms = 40
quiet_window_ms = 100

[logs]
max_buffer_size = 1000

[artifacts]
dir = "./browser-artifacts"

[timeline]
max_entries = 500
```

### Environment Variables

Supported config overrides use `GSD_BROWSER_<SECTION>_<FIELD>` naming:

```bash
GSD_BROWSER_BROWSER_PATH=/usr/bin/chromium
GSD_BROWSER_DAEMON_PORT=9223
GSD_BROWSER_SCREENSHOT_QUALITY=90
GSD_BROWSER_SETTLE_TIMEOUT_MS=1000
GSD_BROWSER_VAULT_KEY=your-encryption-key
```

---

## Session Cleanup

Always stop the daemon when done to avoid leaked Chrome processes:

```bash
gsd-browser daemon stop
```

For parallel sessions:

```bash
gsd-browser --session agent1 daemon stop
gsd-browser --session agent2 daemon stop
```

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