python-testing-patterns

Custom Claude Code plugin repository with development workflow agents and skills

Skill

Expert Python web scraping - coordinator (grabber-architect) plus three specialists: stealth-browser-expert (Patchright/Camoufox/Nodriver + CAPTCHA), http-fingerprint-expert (JA4+/curl_cffi/primp + proxies/Web Unlocker), ai-scraping-expert (Crawl4AI/Firecrawl/ScrapeGraphAI + Pydantic + GraphQL RE)

Stripe payments, subscriptions, Connect marketplaces, and revenue optimization for SaaS monetization; includes a dedicated skill (link-first references + scripts) for API patterns, Next.js/TypeScript integration, Embedded Checkout, Billing Meters, Entitlements, webhook reliability and auditing, Stripe Agent Toolkit for LLM tool-calling, test-clock simulation, PCI DSS 4.0 compliance, and pricing design

Expert Firefox extension (WebExtension) developer covering Manifest V2/V3, all 51 browser.* APIs, content scripts, background scripts, native messaging, cross-browser compatibility, AMO publishing, web-ext CLI tooling, project scaffolding, and live MDN documentation lookup; includes /firefox-scaffold, /firefox-lint, /firefox-publish commands

Custom Claude Code plugin repository with development workflow agents and skills

Progressive Web App expert for the 2025-2026 baseline. Covers Web App Manifest (id, display_override, scope_extensions, handle_links, file_handlers, share_target), Service Workers (Workbox 7 / Serwist), Web Push (VAPID, RFC 8030/8291/8292, Declarative Push for Safari 18.4+), install flows (beforeinstallprompt, Window Controls Overlay), OPFS storage, Project Fugu capabilities, Core Web Vitals 2025 (INP < 200ms), security (HTTPS, CSP, COOP/COEP), and distribution (Bubblewrap to Google Play, PWA Builder to Microsoft Store, Capacitor to App Store, PWA Builder to Meta Quest). Includes the pwa-architect agent and three commands: /pwa-audit (hybrid local-code + live-URL via Playwright), /pwa-scaffold (manifest + SW + iOS meta + framework wiring for Vite, Next.js, Angular, Nuxt, vanilla), /pwa-checklist (deterministic production-deploy checklist walk).

Cross-model peer review of plans, specs, and the decisions a session has just made: a harness-agnostic deliberation protocol (challenge packet with GIVEN-tagged context, challenger findings that each carry their own falsifier, evidence-backed responses at a stable locator, a verbatim ledger, a certification pass the challenger owns, and a verdict computed from the ledger) plus a transport-only MCP server for any OpenAI-compatible endpoint. Point it at a document, or run it with no path to materialize the session's context, settled decisions and open questions into a frozen brief and put that on trial. The challenger attacks the artifact, the local session refutes with evidence, and unresolved disagreements terminate as precise standoffs for the user to settle

SEO optimization, content marketing, brand naming, domain hunting, customer review response, GA4/GTM analytics implementation, and answer-engine optimization (Google AI Overviews / SGE, Perplexity, ChatGPT Search, Claude Search, Bing Copilot) - technical audits, keyword research, content strategy, brand naming, domain checks, trademark screening, professional review reply generation with sentiment analysis, Google Analytics 4 + Google Tag Manager deployment with EU/GDPR Consent Mode v2 compliance, /ga4-audit Playwright-powered verification, and /llm-seo-audit AEO command with crawler-access matrix, E-E-A-T, structured data, passage extractability. Prose humanization lives in the standalone text-humanizer plugin.

Docker best practices - optimized multi-stage Dockerfiles, layer caching, security hardening, and minimal base image selection for any language or framework (Node, Python, Go, Rust, Java, Bun, Deno)