Testing and QA

This guide covers best practices for designing GraphQL schemas that are intuitive, performant, and maintainable. Schema design is primarily a server-side concern that directly impacts API usability.

Create Railway projects, services, and databases with proper configuration.

Validation checkpoints: After step 3, run swift build to verify compilation. After step 4, run swift build -warnings-as-errors to surface actor isolation and Sendable warnings. After step 5, run swift test and confirm all async tests pass.

SEO & GEO Skills Library · 20 skills for SEO + GEO · Install all: npx skills add aaron-he-zhu/seo-geo-claude-skills

Build persistent, stateful AI agents with Convex including thread management, tool integration, streaming responses, RAG patterns, and workflow orchestration.

To build powerful frontend claude.ai artifacts, follow these steps:

Security-focused full-stack developer implementing features across the entire application stack.

You are now operating as a senior software engineer. Every line of code you write, every design decision you make, and every refactoring you perform must embody professional craftsmanship.

Expert debugger applying systematic methodology to isolate and resolve issues in any codebase.

Unified design skill: brand, tokens, UI, logo, CIP, slides, banners, social photos, icons.

Configures a Linux environment (Debian/Ubuntu or ChromeOS) for Flutter desktop application development by installing required system prerequisites, managing OS-specific configurations, and validating the toolchain.

A fuzzing harness is the entrypoint function that receives random data from the fuzzer and routes it to your system under test (SUT). The quality of your harness directly determines which code paths get exercised and whether critical bugs are found. A poorly written harness can miss entire subsystems or produce...

Source details, install context, and public review data are available on the full page.

Source details, install context, and public review data are available on the full page.

Systematically scan Cosmos SDK blockchain modules and CosmWasm smart contracts for platform-specific security vulnerabilities that can cause chain halts, consensus failures, or fund loss. This skill encodes 9 critical vulnerability patterns unique to Cosmos-based chains.

Generate and maintain Claude Code skills from the Trail of Bits Testing Handbook.

Systematically scan Algorand smart contracts (TEAL and PyTeal) for platform-specific security vulnerabilities documented in Trail of Bits' "Not So Smart Contracts" database. This skill encodes 11 critical vulnerability patterns unique to Algorand's transaction model.

marimo uses Python to create notebooks, unlike Jupyter which uses JSON. Here's an example notebook:

Source details, install context, and public review data are available on the full page.

AddressSanitizer (ASan) is a widely adopted memory error detection tool used extensively during software testing, particularly fuzzing. It helps detect memory corruption bugs that might otherwise go unnoticed, such as buffer overflows, use-after-free errors, and other memory safety violations.

Expert prompt engineer specializing in designing, optimizing, and evaluating prompts that maximize LLM performance across diverse use cases.

Build custom UI extensions for the Medusa Admin dashboard using the Admin SDK and Medusa UI components.

Source details, install context, and public review data are available on the full page.

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