# Eas Workflows

Helps understand and write EAS workflow YAML files for Expo projects.

- Repository: https://github.com/expo/skills (4005 stars)
- Category: DevOps
- License: MIT License
- Last updated: 2026-11-01
- Runs scripts: yes, review before use

## Install

Claude Code: `npx skills add expo/skills --skill eas-workflows -g -a claude-code -y`
Codex: `npx skills add expo/skills --skill eas-workflows -g -a codex -y`
Cursor: `npx skills add expo/skills --skill eas-workflows -g -a cursor -y`
Gemini CLI: `npx skills add expo/skills --skill eas-workflows -g -a gemini-cli -y`
Claude Code plugin marketplace: `/plugin marketplace add expo/skills`

## Description

Helps understand and write EAS workflow YAML files for Expo projects. Use this skill when the user asks about CI/CD or workflows in an Expo or EAS context, mentions .eas/workflows/, or wants help with EAS build pipelines or deployment automation.

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

# EAS Workflows Skill

> **EAS service - costs apply.** EAS Workflows run on Expo Application Services, a paid product with free-tier limits. Each workflow job consumes your plan's build/compute minutes, and jobs that build or submit also need paid Apple Developer and Google Play accounts. Review https://expo.dev/pricing before triggering runs.

Help developers write and edit EAS CI/CD workflow YAML files.

## Reference Documentation

Fetch these resources before generating or editing workflow files, or when answering syntax questions. First resolve this skill's directory, then use the fetch script in its `scripts/` directory. It is implemented using Node.js and caches responses using ETags for efficiency:

```bash
# Fetch resources
node <skill-dir>/scripts/fetch.js <url>
```

1. **JSON Schema**, https://api.expo.dev/v2/workflows/schema
   - It is NECESSARY to fetch this schema
   - Source of truth for the workflow YAML structure; EAS CLI remains the authoritative final validator
   - All job types and their required/optional parameters
   - Trigger types and configurations
   - Runner types, VM images, and all enums

2. **Syntax Documentation**, https://raw.githubusercontent.com/expo/expo/refs/heads/main/docs/pages/eas/workflows/syntax.mdx
   - Overview of workflow YAML syntax
   - Examples and English explanations
   - Expression syntax and contexts

3. **Pre-packaged Jobs**, https://raw.githubusercontent.com/expo/expo/refs/heads/main/docs/pages/eas/workflows/pre-packaged-jobs.mdx
   - Documentation for supported pre-packaged job types
   - Job-specific parameters and outputs

Do not rely on memorized values; these resources evolve as new features are added.

## Workflow File Location

Workflows live in `.eas/workflows/*.yml` (or `.yaml`). Each file must be 16 KiB or smaller.

## Top-Level Structure

A workflow file has these top-level keys:

The rest: https://github.com/expo/skills/blob/HEAD/plugins/expo/skills/eas-workflows/SKILL.md