sanity-io

Add, review, and maintain Chromatic visual regression coverage in the Sanity monorepo via dev/storybook stories, the vitest browser-mode suite, and Playwright e2e snapshots. Use when adding visual test coverage, writing stories, reviewing Chromatic diffs,…

Step-by-step procedure for migrating components in the Sanity monorepo off styled-components to Panda CSS (zero-runtime, build-time extracted CSS). Use when converting styled() components to .css.ts files, creating .css.ts files, handling CSS specificity…

Run, dispatch and read the hermetic Studio performance benchmark suite in perf/bench — local runs and modes, the trigger:perf-bench PR label, the Studio Bench workflow_dispatch inputs (run_suite, self_test, backfill_sha, release_tag, ab_from/ab_to) and which…

Studio Radar, the repo-health dashboard at radar.sanity.dev (source in dev/radar) — what each tool shows, where the data lives, how to query benchRun / gitCommit / gitTag / bisectSession documents with GROQ (read token required), and how to run, test and…

Find react-rx hook call sites (useObservable, useSyncObservable, useObservablePromise) whose observable identity churns or that re-render more than needed, verify the suspicion at runtime, and refactor them to the useValuePreview pattern. Use when reviewing…

Use when writing Playwright tests, fixing flaky tests, debugging failures, implementing Page Object Model, configuring CI/CD, optimizing performance, mocking APIs, handling authentication or OAuth, testing accessibility (axe-core), file uploads/downloads,…

How to write idiomatic, efficient RxJS code. Use this skill whenever the user is writing, refactoring, reviewing, or debugging code that uses RxJS — including any file that imports from 'rxjs' or 'rxjs/operators'. Trigger on mentions of observables,…

React and Next.js performance optimization guidelines from Vercel Engineering. This skill should be used when writing, reviewing, or refactoring React/Next.js code to ensure optimal performance patterns. Triggers on tasks involving React components, Next.js…

Turn on Cache Components in a Next.js app and resolve the blocking routes it surfaces. Use when the user wants to enable, adopt, or migrate to Cache Components, flip the `cacheComponents` flag, work through a flood of blocking-prerender / instant validation…

Drive a Next.js route to instant navigation by setting up an agentic loop, under Cache Components / PPR, on initial load (hard navigation) and client-side navigation (soft navigation). Encode the goal as a failing @next/playwright instant() e2e and work it to…

Verify Next.js runtime behavior after editing app code. Use this skill to confirm a change actually works in a running app — not just that it compiles or type-checks. Combines /_next/mcp (Next.js's view) with agent-browser (the browser's view). Requires a…

Turn on Partial Prefetching in a Next.js app and work through the insights it surfaces. Use when the user wants to enable or adopt Partial Prefetching, flip the `partialPrefetching` flag, opt routes in with `export const prefetch = 'partial'`, audit `<Link…

Integrates Sanity Live with Next.js Cache Components in next-sanity v13+ apps. Sets up sanityFetch, a shared cachedSanity 'use cache' boundary, <SanityLive>, Visual Editing, Presentation Tool, draft mode handling, and the three-layer (Page/Dynamic/Cached)…

Node.js package manager with strict dependency resolution. Use when running pnpm specific commands, configuring workspaces, or managing dependencies with catalogs, patches, or overrides.

Bundle TypeScript and JavaScript libraries with blazing-fast speed powered by Rolldown. Use when building libraries, generating type declarations, bundling for multiple formats, or migrating from tsup.

Turborepo monorepo build system guidance. Triggers on: turbo.json, task pipelines, dependsOn, caching, remote cache, the "turbo" CLI, --filter, --affected, CI optimization, environment variables, internal packages, monorepo structure/best practices, and…

Turborepo monorepo build system guidance. Triggers on: turbo.json, task pipelines, dependsOn, caching, remote cache, the "turbo" CLI, --filter, --affected, CI optimization, environment variables, internal packages, monorepo structure/best practices, and…

React and Next.js performance optimization guidelines from Vercel Engineering. This skill should be used when writing, reviewing, or refactoring React/Next.js code to ensure optimal performance patterns. Triggers on tasks involving React components, Next.js…

Vite build tool configuration, plugin API, SSR, and Vite 8 Rolldown migration. Use when working with Vite projects, vite.config.ts, Vite plugins, or building libraries/SSR apps with Vite.

Vitest fast unit testing framework powered by Vite with Jest-compatible API. Use when writing tests, mocking, configuring coverage, or working with test filtering and fixtures.

Step-by-step procedure for migrating a workspace off styled-components to vanilla-extract (zero-runtime CSS). Use when converting styled() components to .css.ts files, removing a styled-components dependency, adding a ./bundle.css export, or when asked to…

Anti-patterns and best practices for building Sanity Studio plugins in this monorepo. Use when writing, reviewing, or refactoring plugin code under plugins/ — especially for styling/CSS, component performance, and runtime cost. Triggers on vanilla-extract,…

Guides agents through migrating an existing plugin into this monorepo with the copy-plugin generator workflow.

Guides agents through expanding Vitest and Playwright e2e coverage for a monorepo plugin. Use when adding or improving plugin tests, wiring e2e-studio, or following the internationalized-array / document-internationalization coverage playbook.

Sanity development best practices for schema design, GROQ queries, TypeGen, Visual Editing, images, Portable Text, Studio structure, localization, migrations, Sanity Functions, webhooks, Blueprints, and framework integrations such as Next.js, Nuxt, Astro,…

Configure singleton documents in a Sanity Studio using the document.singletons registry. Use when a developer wants a fixed-id document (settings, navigation, footer) edited in place, hidden from the default content list, with no "create new" or "duplicate"…

Produces a tailored Sanity Studio upgrade plan by inspecting the repository's installed versions, config, and source, then reporting only the breaking changes that actually apply. Covers Studio v3 and later; v2 projects are identified and redirected, not…

Content experimentation and A/B testing guidance covering experiment design, hypotheses, metrics, sample size, statistical foundations, CMS-managed variants, and common analysis pitfalls. Use this skill when planning experiments, setting up variants, choosing…

Convert HTML and Markdown content into Portable Text blocks for Sanity. Use when migrating content from legacy CMSs, importing HTML or Markdown into Sanity, building content pipelines that ingest external content, converting rich text between formats, or…

Plans, implements, and reviews migrations from other CMSes and content systems into Sanity. Use when migrating or replatforming to Sanity from AEM, Adobe Experience Manager, Contentful, Strapi, Webflow, WordPress, Payload, Drupal, Markdown/MDX/frontmatter…

Structured content modeling guidance for schema design, content architecture, content reuse, references versus embedded objects, separation of concerns, and taxonomies across Sanity and other headless CMSes. Use this skill when designing or refactoring…

SEO and AEO best practices for metadata, Open Graph, sitemaps, robots.txt, hreflang, JSON-LD structured data, EEAT, and content optimized for search engines and AI answer surfaces. Use this skill when implementing page SEO, technical SEO, schema markup,…

Build features with the Sanity App SDK (@sanity/sdk-react). Use when adding components, fetching or editing Sanity content, or working with hooks like useDocuments, useDocument, useDocumentProjection, useEditDocument, or useQuery.

Build features with the Sanity App SDK (@sanity/sdk-react) and Sanity UI. Use when adding components, fetching or editing Sanity content, or working with hooks like useDocuments, useDocument, useDocumentProjection, useEditDocument, or useQuery.

Use when writing, adding, or modifying e2e tests for CLI commands in packages/@sanity/cli-e2e/. Triggers on e2e test creation, new command test coverage, or changes to CLI test infrastructure.

Build features with the Sanity App SDK (@sanity/sdk-react). Use when adding components, fetching or editing Sanity content, or working with hooks like useDocuments, useDocument, useDocumentProjection, useEditDocument, or useQuery.

Build features with the Sanity App SDK (@sanity/sdk-react) and Sanity UI. Use when adding components, fetching or editing Sanity content, or working with hooks like useDocuments, useDocument, useDocumentProjection, useEditDocument, or useQuery.

Use when creating git commits - enforces conventional commit format with correct type prefixes for release-triggering vs non-release changes

Use this for writing or reviewing Sanity product UI copy: Studio UI text, error/validation messages, empty states, tooltips, buttons, status/confirmation dialogs, onboarding flows, CLI output, and API error responses. Trigger whenever you see UX writing,…

Configure Sanity libraries with @sanity/tsdown-config, including its publishing defaults, React transforms, CSS extraction, TSDoc checks, and advanced tsdown composition. Use when creating or editing tsdown.config.ts for a Sanity package, or when deciding…

Build, watch, and validate Sanity npm libraries with the pkg CLI and @sanity/pkg-utils. Use when a package has Sanity-style package.json exports, package.config.ts, pkg build, pkg watch, or pkg check, and when deciding whether to stay with pkg-utils or use…

Migrate TypeScript library projects from tsup to tsdown. Provides complete option mappings, config transformation rules, default value differences, and unsupported option alternatives so AI agents can intelligently perform migrations.

Bundle TypeScript and JavaScript libraries with blazing-fast speed powered by Rolldown. Use when building libraries, generating type declarations, bundling for multiple formats, or migrating from tsup.

Vitest fast unit testing framework powered by Vite with Jest-compatible API. Use when writing tests, mocking, configuring coverage, or working with test filtering and fixtures.

Inspect and profile the React component tree of a running Storybook story through chrome-devtools-mcp (React DevTools over the Chrome DevTools Protocol, via react-devtools-cdt-mcp). Use when debugging why a @sanity/ui component re-renders, finding slow…

Drive a Next.js route to instant navigation by setting up an agentic loop, under Cache Components / PPR, on initial load (hard navigation) and client-side navigation (soft navigation). Encode the goal as a failing @next/playwright instant() e2e and work it to…

Integrates Sanity Live with Next.js Cache Components in next-sanity v13+ apps. Sets up sanityFetch, a shared cachedSanity 'use cache' boundary, <SanityLive>, Visual Editing, Presentation Tool, draft mode handling, and the three-layer (Page/Dynamic/Cached)…

Record polished UI demo videos using Playwright. Use when the user asks to create a demo, walkthrough, screen recording, or tutorial video of a web application. Produces WebM videos with visible cursor, natural pacing, and professional feel.

Drive a Next.js route to instant navigation by setting up an agentic loop, under Cache Components / PPR, on initial load (hard navigation) and client-side navigation (soft navigation). Encode the goal as a failing @next/playwright instant() e2e and work it to…

Integrates Sanity Live with Next.js Cache Components in next-sanity v13+ apps. Sets up sanityFetch, a shared cachedSanity 'use cache' boundary, <SanityLive>, Visual Editing, Presentation Tool, draft mode handling, and the three-layer (Page/Dynamic/Cached)…

Turn on Partial Prefetching in a Next.js app and work through the insights it surfaces. Use when the user wants to enable or adopt Partial Prefetching, flip the `partialPrefetching` flag, opt routes in with `export const prefetch = 'partial'`, audit `<Link…

Build AI agents with structured access to Sanity content via Sanity Context. Use when setting up a Sanity-powered chatbot, connecting an AI assistant to Sanity content, or adding client-side tools to an agent. Covers MCP endpoint setup in the Context app…

Interactive session to create Instructions field content for the Sanity Context MCP server. Use this skill whenever users mention tuning agent context, improving agent responses to Sanity data, configuring MCP instructions, setting up content filters, or when…

Interactive session to craft a system prompt for an AI agent powered by the Sanity Context MCP server. Use this skill when users want to define agent personality, set tone/voice, establish boundaries and guardrails, configure refusal behaviors, or control how…

Integrates Sanity Live with Next.js Cache Components in next-sanity v13+ apps. Sets up sanityFetch, <SanityLive>, Visual Editing, Presentation Tool, draft mode handling, and the three-layer (Page/Dynamic/Cached) component pattern with explicit…

How to write idiomatic, efficient RxJS code. Use this skill whenever the user is writing, refactoring, reviewing, or debugging code that uses RxJS — including any file that imports from 'rxjs'. Trigger on mentions of observables, subscriptions, RxJS…

Build AI agents with structured access to Sanity content via Agent Context. Use when setting up a Sanity-powered chatbot, connecting an AI assistant to Sanity content, or adding client-side tools to an agent. Covers Studio setup, agent implementation, and…