Fast QA audit on a URL via Chrome DevTools Protocol. Runs 8 analyzers in one pass: JS errors, unhandled rejections, network failures (4xx/5xx), API frequency loops, CSS cascade issues, SEO violations, security header checks, and accessibility. Returns { findings: [{severity, type, message, url}], summary: {critical, warning, info} }. Use for CI smoke tests and pre-deploy gates. Pass cache: true to skip re-crawl on repeat calls to the same URL within a session — useful in tight fix loops. For Lighthouse scoring and memory leak detection, use argus_audit_full. Requires Chrome running with --remote-debugging-port=9222.

Deep QA audit — extends argus_audit with Lighthouse performance/accessibility scoring, responsive layout checks across 4 viewports (320/768/1280/1920px), memory leak detection via heap snapshot, hover-state regression detection, and accessibility tree snapshot. Returns full JSON report with findings by severity, Lighthouse scores, and layout overflow details. Use when argus_audit passes clean but visual or performance regressions are suspected. Requires Chrome running with --remote-debugging-port=9222.

Diffs dev vs staging environments side-by-side. Navigates both URLs, captures screenshots, and runs the full analyzer suite on each, then surfaces regressions — findings present in staging but not dev, or with changed severity. Returns { regressions: [{type, devSeverity, stagingSeverity}], screenshots, summary }. Run before promoting a build to staging to catch environment-specific bugs. Set TARGET_DEV_URL and TARGET_STAGING_URL env vars before starting the server; omit TARGET_STAGING_URL to run CSS-analysis-only mode.

Returns the most recent Argus JSON report from the reports/ directory. Report includes a findings array and severity summary (critical/warning/info counts). Returns { "error": "No reports found in reports/" } when no audits have been run yet. Use to retrieve prior results without re-running a scan, or to pipe findings into another analysis tool.

Snapshots the currently open Chrome tab without navigating — captures console errors, network failures (4xx/5xx), CORS blocks, and auth failures in one poll. Returns { findings: [{severity, type, message, url}], newConsole, newNetwork }. Use during active development to inspect what is happening on the current page without running a full audit. Pass tabId to inspect a specific tab (get IDs from argus_get_context or list_pages). Without tabId, reads the active tab. Requires Chrome on --remote-debugging-port=9222 with a page already open.

Captures everything currently broken on the open Chrome tab and formats it as a diagnostic context for Claude to read and suggest fixes. Does NOT navigate — reads the live tab state after user interactions, in authenticated sessions, or mid-flow. Returns { snapshot_id, summary, url, timestamp, critical_issues, warnings, js_errors, network_failures, console_errors, recent_requests, open_tabs }. Fix loop: pass the snapshot_id from a previous call as snapshot_id to get a diff — the response will include resolved (cleared since last snapshot), new_issues (appeared since last snapshot), and persisting (unchanged). Multi-tab: pass tabId to inspect a specific tab, or omit to read the active tab. The open_tabs array always lists all currently open Chrome tabs. Workflow: call argus_get_context → Claude suggests fix → apply fix → call argus_get_context with snapshot_id → verify resolved array is non-empty. Requires Chrome on --remote-debugging-port=9222.

Screenshot baseline comparison for a URL — captures a PNG screenshot and compares it pixel-by-pixel against a stored baseline using pixelmatch. First call: saves baseline, returns visual_baseline_created (info). Subsequent calls: returns visual_regression (warning ≥0.1% / critical ≥5% pixels changed) + visual_diff_summary (always). Baseline stored in reports/baselines/screenshots/. Use in CI or fix loops to detect unintended visual regressions without a full audit. Pass updateBaseline: true to force-refresh the stored baseline (e.g. after intentional UI changes). Requires Chrome on --remote-debugging-port=9222.

Full design-to-implementation fidelity audit against a Figma frame. 13 mismatch finding types: CSS token values, component presence, fill/text color (RGB delta), typography (fontSize/fontWeight/lineHeight/fontFamily/letterSpacing), Auto Layout padding and gap, border-radius (per-corner), bounding-box overflow, absolute position drift (scroll-corrected x/y, 20px threshold), border stroke (color+weight), box-shadow (offset+blur+spread+color), opacity, and text content. Selector fallback: tries [data-testid], [aria-label], #id, .class per node. Requires FIGMA_API_TOKEN env var and Chrome on --remote-debugging-port=9222. Returns { findings, summary } where summary includes 13 mismatch-type counts.

Runs a targeted Argus audit on the routes affected by a GitHub pull request. Fetches the PR diff, maps changed files to routes in your target config using path-slug heuristics (infrastructure changes trigger a full audit; targeted otherwise), and audits only those routes — faster than a full scan and focused on what the PR actually touched. Returns { findings, affectedRoutes, changedFiles, perRoute, summary, blocked, blockOn }. Use in CI to gate merges: check blocked:true or pipe findings to an AI verdict step. Requires Chrome on --remote-debugging-port=9222. GITHUB_TOKEN env var recommended for private repos.