Look up VoltAgent documentation embedded in node_modules/@voltagent/core/docs for version-matched docs. Use for API signatures, guides, and examples.

Writes, reviews, and debugs idiomatic Rust code with memory safety and zero-cost abstractions. Implements ownership patterns, manages lifetimes, designs trait hierarchies, builds async applications with tokio, and structures error handling with Result/Option. Use when building Rust applications, solving ownership or borrowing issues, designing trait-based APIs, implementing async/await concurrency, creating FFI bindings, or optimizing for performance and memory safety. Invoke for Rust, Cargo, ownership, borrowing, lifetimes, async Rust, tokio, zero-cost abstractions, memory safety, systems programming.

Performs pandas DataFrame operations for data analysis, manipulation, and transformation. Use when working with pandas DataFrames, data cleaning, aggregation, merging, or time series analysis. Invoke for data manipulation tasks such as joining DataFrames on multiple keys, pivoting tables, resampling time series, handling NaN values with interpolation or forward-fill, groupby aggregations, type conversion, or performance optimization of large datasets.

Creates and configures NestJS modules, controllers, services, DTOs, guards, and interceptors for enterprise-grade TypeScript backend applications. Use when building NestJS REST APIs or GraphQL services, implementing dependency injection, scaffolding modular architecture, adding JWT/Passport authentication, integrating TypeORM or Prisma, or working with .module.ts, .controller.ts, and .service.ts files. Invoke for guards, interceptors, pipes, validation, Swagger documentation, and unit/E2E testing in NestJS projects.

Use when building, debugging, or extending MCP servers or clients that connect AI systems with external tools and data sources. Invoke to implement tool handlers, configure resource providers, set up stdio/HTTP/SSE transport layers, validate schemas with Zod or Pydantic, debug protocol compliance issues, or scaffold complete MCP server/client projects using TypeScript or Python SDKs.

Use when building CLI tools, implementing argument parsing, or adding interactive prompts. Invoke for parsing flags and subcommands, displaying progress bars and spinners, generating bash/zsh/fish completion scripts, CLI design, shell completions, and cross-platform terminal applications using commander, click, typer, or cobra.

Use when developing firmware for microcontrollers, implementing RTOS applications, or optimizing power consumption. Invoke for STM32, ESP32, FreeRTOS, bare-metal, power optimization, real-time systems, configure peripherals, write interrupt handlers, implement DMA transfers, debug timing issues.

Writes, optimizes, and debugs C++ applications using modern C++20/23 features, template metaprogramming, and high-performance systems techniques. Use when building or refactoring C++ code requiring concepts, ranges, coroutines, SIMD optimization, or careful memory management — or when addressing performance bottlenecks, concurrency issues, and build system configuration with CMake.

This skill should be used when the user says "pre-mortem", "premortem", "risk analysis", "stress premortem", "failure analysis", "what could go wrong", "pre mortem", "investigate failure", "failure modes", or wants to stress-test a product concept by applying Gary Klein's pre-mortem methodology to identify hypothetical failure root causes, early warning signals, and mitigation strategies. Produces a pre-mortem report with 3 root causes across distinct failure dimensions and recommended concept updates.

This skill should be used when the user says "arch vision", "architecture vision", "arn arch vision", "define the architecture", "tech stack", "what technology should I use", "design the system", "system architecture", "how should I build this", "technology choices", "choose technologies", "pick a tech stack", or wants to explore technology options and define the high-level architecture for a greenfield project. Takes a product concept as input and produces an architecture-vision.md document capturing the technology stack, system design, protocols, packaging strategy, and known risks.

This skill should be used when the user says "execute plan with teams", "run plan teams", "execute with agent teams", "team execution", "execute plan with agent teams instead of subagents", "teams mode", "agent teams mode", "execute with teams", or wants to execute a structured project plan using Claude Code's experimental Agent Teams feature. Creates a team of executor, reviewer, and architect teammates that collaborate on task implementation with built-in quality gates. Requires the experimental Agent Teams feature to be enabled. For standard subagent-based execution, use arn-code-execute-plan instead.

This skill should be used when the user says "report issue", "arness code report", "code report", "something went wrong", "report a bug", "file arness code issue", "arness code broke", "report arness code problem", "diagnose issue", "arness doctor", "run doctor", "diagnose arness code", "arn-code-report", or wants to report a problem with an Arness Code workflow skill. Invokes the arn-code-doctor agent to diagnose the issue, then files a GitHub issue on the Arness plugin repository. Do NOT use this for filing issues on the user's own project — use /arn-code-create-issue for that. For Spark issues use /arn-spark-report. For Infra issues use /arn-infra-report.

This skill should be used when the user says "prfaq", "pr faq", "pr/faq", "press release stress test", "stress prfaq", "amazon pr faq method", "test the pitch with a pr/faq", "validate concept through pr/faq", "critique press release", "pr faq stress test", "will this marketing story hold up", or wants to stress-test a product concept by drafting a compelling press release and FAQ, then adversarially critiquing it to find where the concept cracks under scrutiny. Produces a PR/FAQ report with the full draft, adversarial questions, crack point analysis, and recommended concept updates.

This skill should be used when the user says "stress interview", "synthetic interview", "user interview stress test", "interview my personas", "test with synthetic users", "persona interview", "simulate user interviews", "run user interviews", or wants to stress-test a product concept by conducting structured interviews with synthetic personas through three adversarial lenses (Pragmatist, Skeptic, Power User). Produces an interview report with per-persona findings, synthesized themes, and recommended concept updates.

This skill should be used when the user says "spark report", "report spark issue", "spark broke", "arn-spark-report", "greenfield issue", "report greenfield problem", "report spark problem", "diagnose spark", "spark doctor", "spark bug", "spark not working", or wants to report a problem with an Arness Spark workflow skill. Invokes the arn-spark-doctor agent to diagnose the issue, then files a GitHub issue on the Arness plugin repository. Do NOT use this for filing issues on the user's own project — use /arn-code-create-issue for that.

This skill should be used when the user says "competitive analysis", "gap analysis", "competitive gap", "stress competitive", "compare competitors", "feature comparison", "competitive stress test", "market comparison", "competitor analysis", or wants to stress-test a product concept by conducting deep competitive gap analysis with feature comparison, gap identification, and positioning assessment. Produces a competitive report with a feature matrix, per-competitor analysis, and recommended concept updates.

This skill should be used when the user says "infra report", "report infra issue", "infra broke", "arn-infra-report", "infrastructure issue", "report deployment problem", "report infrastructure problem", "diagnose infra", "infra doctor", or wants to report a problem with an Arness Infra workflow skill. Invokes the arn-infra-doctor agent to diagnose the issue, then files a GitHub issue on the Arness plugin repository. Do NOT use this for filing issues on the user's own project — use /arn-code-create-issue for that.

This skill should be used when the user says "review plan", "validate plan", "check plan", "sanity check the plan", "verify plan", "review my plan", "audit plan", "is my plan ready", or wants to validate a structured project plan for completeness, correctness, and pattern compliance before execution. Checks structural completeness, document quality, dependency graph consistency, codebase reference validity, and pattern compliance. Offers to fix found issues interactively and can proceed directly to arn-code-taskify when the plan passes.

Identify and exploit authentication and session management vulnerabilities in web applications. Broken authentication consistently ranks in the OWASP Top 10 and can lead to account takeover, identity theft, and unauthorized access to sensitive systems.