Raycast Extension Development

Scope

Use when writing or modifying a Raycast extension. To open or prepare a PR to raycast/extensions, use pr-raycast instead.

Overrides global lint/commit defaults in extension directories.

Official resources

• Prepare for Store
• Screenshots
• Icon Maker
• Publish
• Extension Guidelines

Linting & Formatting

Order: lintro first → Raycast last. Raycast wins on conflicts.

# 1. Repo root (when lintro is configured)
uv run lintro fmt && uv run lintro chk

# 2. extensions/<name>/ — required before commit
npm run lint
npm run fix-lint && npm run lint   # only if lint failed
npm run build                      # distribution build; CI uses npm
bun run dev                        # local dev only

Prettier: printWidth: 120, singleQuote: false. ESLint: @raycast/eslint-config.

Package Management

• Local dev: bun install, bun run <script>
• CI/store validation: npm run lint, npm run build

Project Structure

src/
├── <command>.tsx
├── components/
├── hooks/
├── lib/
└── types/

One command file per package.json commands entry. Extract testable logic to lib/. Vitest optional; manual test via bun run dev.

Code patterns

• getPreferenceValues<Preferences.<Command>>() — never manual Preferences interfaces
• trash() for user file deletion; fs/promises only (no sync fs, no AppleScript)
• execFile with arg arrays — no shell string interpolation for paths

Constraints

• Max 12 keywords; MIT license; US English UI strings
• Max filename length 255 (macOS)

Store readiness checklist

Verify before asking to open a PR (full workflow in pr-raycast).

package.json

• Fields: name, title, description, icon, author, platforms, categories,

license: MIT

• Scripts: build, dev, lint, fix-lint, publish (npx @raycast/api@latest publish)
• Command titles: Title Case (Apple Style Guide)
• package-lock.json committed; no bun/yarn/pnpm lockfiles

Assets

Icon (guide, Icon Maker)

• 512×512 PNG in assets/; readable on light and dark UI; not default Raycast icon

Screenshots (specs)

• metadata/{extension-name}-{N}.png, 2000×1250 PNG, max 6 (≥3 recommended)
• Window Capture + Save to Metadata in dev mode; one theme; no sensitive data

Docs

• CHANGELOG.md: top entry uses {PRMERGEDATE}; accurate features only
• README.md: required if setup needed; README media in media/, not metadata/

Contributing to extensions you don't own

Add yourself to contributors in package.json; update CHANGELOG.md.