Expo cicd workflows

Skill ulpi-io/plugin-marketplace/plugins/expo/skills/expo-cicd-workflows

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Install

npx -y skills add ulpi-io/plugin-marketplace --skill expo-cicd-workflows

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What its author says it does

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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.

The file declares its own license as MIT License. That is the author’s claim about this one file, and it is not the same thing as the license GitHub reports for the repository, which is listed with the other numbers below.

SKILL.md

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EAS Workflows Skill

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

Reference Documentation

Fetch these resources before generating or validating workflow files. Use the fetch script (implemented using Node.js) in this skill's scripts/ directory; it caches responses using ETags for efficiency:

# Fetch resources
node {baseDir}/scripts/fetch.js <url>

JSON Schema — https://api.expo.dev/v2/workflows/schema
- It is NECESSARY to fetch this schema
- Source of truth for validation
- All job types and their required/optional parameters
- Trigger types and configurations
- Runner types, VM images, and all enums
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
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).

Top-Level Structure

A workflow file has these top-level keys:

name — Display name for the workflow
on — Triggers that start the workflow (at least one required)
jobs — Job definitions (required)
defaults — Shared defaults for all jobs
concurrency — Control parallel workflow runs

Consult the schema for the full specification of each section.

Expressions

Use ${{ }} syntax for dynamic values. The schema defines available contexts:

github.* — GitHub repository and event information
inputs.* — Values from workflow_dispatch inputs
needs.* — Outputs and status from dependent jobs
jobs.* — Job outputs (alternative syntax)
steps.* — Step outputs within custom jobs
workflow.* — Workflow metadata

Generating Workflows

When generating or editing workflows:

Fetch the schema to get current job types, parameters, and allowed values
Validate that required fields are present for each job type
Verify job references in needs and after exist in the workflow
Check that expressions reference valid contexts and outputs
Ensure if conditions respect the schema's length constraints

Validation

After generating or editing a workflow file, validate it against the schema:

# Install dependencies if missing
[ -d "{baseDir}/scripts/node_modules" ] || npm install --prefix {baseDir}/scripts

node {baseDir}/scripts/validate.js <workflow.yml> [workflow2.yml ...]

The validator fetches the latest schema and checks the YAML structure. Fix any reported errors before considering the workflow complete.

Answering Questions

When users ask about available options (job types, triggers, runner types, etc.), fetch the schema and derive the answer from it rather than relying on potentially outdated information.

Gives 0 of the 12 instructions most automation workflows skills give

Counted across 745 of the 1,008 authors here whose files we hold, read 2026-08-06

write conventional commit messagesin 36 of 745, across 35 files
delete branches after mergein 30 of 745, across 21 files
make atomic commitsin 25 of 745, across 15 files
write minimal code to pass testsin 22 of 745, across 10 files
run tests before committingin 21 of 745, across 13 files
re-snapshot after navigation or DOM changesin 21 of 745, across 13 files
use try-catch for error handlingin 20 of 745, across 6 files
write tests before implementationin 20 of 745, across 8 files
configure branch protection rulesin 19 of 745, across 5 files
explain the why in commit messagesin 19 of 745, across 9 files
refactor code while tests remain greenin 19 of 745, across 6 files
Interact with elements using refsin 19 of 745, across 11 files

Grouped from the skills themselves: near-identical wordings counted once, and counted by distinct author, so one author publishing three of these counts once.