Skills
96,981 packaged capabilities and playbooks for agents. Install any of them with one command.
Testing & quality
Probe whether a candidate term carries its meaning alone by asking three models to guess it from a bare scenario. Use when naming a field, an enum value, a table, or a glossary word and several candidates are in play (“carry or carryOver,” “does this name read,” “which word is clearer”)
LangSmith tracing and trace debugging for AgentSeek templates. Covers CLI installation, adding tracing to LangGraph apps, querying traces, and inspecting run IO. Use when debugging agent backends, investigating slow traces, or adding observability to a template.
Use when a workflow or capability must become a new agent skill, when an existing skill must be updated or standardized without losing its purpose, when a user-level or project-level variant is needed, or when a skill needs validation, evaluation, scaffolding, scripts, tests, or a Mise task graph.
Automate and interact with web pages through Chrome or Chromium using the Chrome DevTools Protocol (CDP): navigate, click, fill forms, inspect content, take screenshots, and debug console or network activity. Use when an agent needs a real browser. Prefer headless Chrome unless visible browser interaction is required.
This skill enables visual inspection of websites running locally or remotely to identify and fix design issues. Triggers on requests like “review website design,” “check the UI,” “fix the layout,” or “find design problems.” Detects issues with responsive design, accessibility, visual consistency, and layout breakage, then fixes them in the source code
Python best practices for writing production-grade code. This skill should be used when writing, reviewing, or refactoring Python code. Triggers on tasks involving Python development, error handling patterns, dictionary operations, and code quality improvements.
Use when analyzing an existing TypeScript or JavaScript codebase to decide where and how to introduce Inngest. Covers repository discovery, framework and package detection, finding durability gaps in HTTP handlers, webhooks, cron jobs, queues, long-running jobs, AI agents, Agent Evals, polling loops, eval loops, and side-effect-heavy code, then producing and implementing an incremental integration plan.
Nest.js framework expert specializing in module architecture, dependency injection, middleware, guards, interceptors, testing with Jest/Supertest, TypeORM/Mongoose integration, and Passport.js authentication. Use PROACTIVELY for any Nest.js application issues including architecture decisions, testing strategies, performance optimization, or debugging complex dependency injection problems. If a specialized expert is a better fit, I will recommend switching and stop.
Desktop automation tool based on PyAutoGUI. Supports screenshots, mouse and keyboard control, image recognition, color detection and more. Triggered when the user needs to automate desktop applications, run UI tests, or handle repetitive tasks.
Provide comprehensive techniques for testing REST, SOAP, and GraphQL APIs during bug bounty hunting and penetration testing engagements. Covers vulnerability discovery, authentication bypass, IDOR exploitation, and API-specific attack vectors.
Audit and validate Flux CD GitOps repositories by scanning local repo files (not live clusters) — runs Kubernetes schema validation, detects deprecated Flux APIs, reviews RBAC/multi-tenancy/secrets management, and produces a prioritized GitOps report. Use when users ask to audit, analyze, validate, review, or security-check a GitOps repo.
Review a diff, PR, branch, or path across thirteen dimensions. Emit a severity-grouped findings report. Use when the user wants a code review. Trigger on “review this”, “/age”, “is this safe to merge”, or “find bugs”. Also trigger on “spot security issues”, “check for slop”, “review my PR”, or “what's wrong with this code”. Review every requested dimension. Review all thirteen dimensions by default. Do not apply fixes. Route them to /cure. Do not harden tests; route that work to /press.
Prepare R packages for CRAN submission by checking for common ad-hoc requirements not caught by devtools::check(). Use when: (1) Preparing a package for first CRAN release, (2) Preparing a package update for CRAN resubmission, (3) Reviewing a package to ensure CRAN compliance, (4) Responding to CRAN reviewer feedback. Covers documentation requirements, DESCRIPTION field standards, URL validation, examples, and administrative requirements.
Add a browser WebCodecs bug to the Remotion Mediabunny WebCodecs bugs docs page. Use when given a Chromium, WebKit, or Firefox issue URL that should be tracked in packages/docs/docs/mediabunny/webcodecs-bugs.mdx, especially when needing to look up the issue title, filing date, reporter, and resolution state before editing the MDX table.
Triage a GitHub PR's review comments, CI failures, and merge conflicts through the /age lens. Use when the user says “address the PR feedback”, “fix the review comments on PR 123”, “fix CI on my PR”, “resolve this PR's merge conflicts”, or “/affinage”. Do not use for a diff without a PR. Use /age instead. Do not use for local Git conflicts without a PR. Use /melt instead.
Checks whether an author can explain a code change before review. Use when the user requests `/hard-cheese`, `/cheese --hard`, or an understanding check. Use it before a pull request or through the `--hard` pipeline flag. Do not use it for reviews, test hardening, or fixes.
Wait for a Remotion pull request to become mergeable, handle merge conflicts, distinguish genuine CI failures from flakes, rerun flaky checks through the flake skill, and merge the PR. Use when asked to run /merge, merge a current PR after checks pass, or shepherd a Remotion PR through CI to merge.
Open a pull request the bklit-ui way: stage and commit with pre-commit hooks, run ultracite from the repo root, rebuild the shadcn registry, run a production test build, fix failures, push, and create a PR with a structured summary. Use when the user asks to commit, push, open a PR, "ship it", or run the full pre-PR checklist.
Linting and formatting SAS code with @sasjs/lint - the .sasjslint rules and their defaults, the macro-declaration rules and ignoredMacros, banned strings, severityLevel and exit codes, per-file @sasjslint overrides, what the formatter fixes, and how the SASjs CLI, VS Code extension and SASjs Server run it. Use when configuring lint rules, resolving a lint warning, or wiring lint into CI, a git hook or an editor.
Control and inspect Amazon Fire TV (Vega) apps via argent — launch/restart/reinstall apps, read the on-screen element tree, navigate with the D-pad remote, type, and take screenshots. Use when the task mentions Vega, Fire TV, or VVD, or involves driving a Vega virtual device.
Run technical quality checks across accessibility, performance, theming, responsive design, and anti-patterns. Generates a scored report with P0-P3 severity ratings and actionable plan. Use when the user wants measurable accessibility, performance, responsive, theming, or anti-pattern findings—not when they mainly want an overall UX critique or final visual/detail polish.
Diagnose and fix a hard bug. Build a reliable reproduction, name the cause, add a regression test, and apply the minimum fix. Use when the user reports a bug, a failure, a flaky test, a performance regression, an error, or a wrong result whose cause is unknown. Use when the user pastes a symptom, a stack trace, or failing test output. Use for "why is X broken", "it stopped working", "it got slower", or "this looks wrong". Do not use for a review-only diff, for feature design, or for a fix whose cause is known.
New to MCP?
From what the protocol is to installing your first server, these answers cover most first questions.
An open protocol that defines how AI applications connect to external tools and data in a uniform way. Clients talk to the model; MCP servers provide tools, resources and prompt templates. They exchange standard messages, so one server can be reused by many clients.