expo-cicd-workflows

expo-cicd-workflows is a skill for Claude Code from zai-org/Synapse. It costs 60 tokens per session (791 once invoked), scanned A, original, Apache-2.0.

A guide for writing EAS Workflows, YAML files that describe automated jobs for Expo projects. EAS is Expo’s service for building, testing, and delivering mobile apps.

In plain words
What is it for?
Use it to create or validate CI/CD pipelines for Expo and EAS, including automated builds and deployment workflows.
Why use it?
It uses the current workflow schema and documentation to check available jobs, settings, triggers, and runners. This reduces errors caused by outdated or incomplete workflow syntax.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: installed under .agents/ (shared by several agents).

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/zai-org/synapse/expo-cicd-workflows
Any agent
npx skills add zai-org/Synapse --skill expo-cicd-workflows
Clone the repo
git clone --depth 1 https://github.com/zai-org/Synapse

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for expo-cicd-workflows

README.md
[![agentmods](https://agentmods.dev/badge/skills/zai-org/synapse/expo-cicd-workflows.svg)](https://agentmods.dev/skills/zai-org/synapse/expo-cicd-workflows)
Your own site
<a href="https://agentmods.dev/skills/zai-org/synapse/expo-cicd-workflows"><img src="https://agentmods.dev/badge/skills/zai-org/synapse/expo-cicd-workflows.svg" alt="Measured on agentmods" height="20"></a>
Per session 60 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 791 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00060 $0.00791
Opus 5 $0.00030 $0.00396
Sonnet 5 $0.00012 $0.00158
Haiku 4.5 $0.00006 $0.00079

Measured 6d ago against content hash 484e1867238a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

expo-cicd-workflows scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/fetch.js, scripts/validate.js), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

Copies of this mod

6 near-identical copies found in the catalogue:

.agents/skills/expo-cicd-workflows/SKILL.md · 93 lines

How it starts

The opening of the file, as written. The whole thing — 93 lines — stays where its author put it; the contents beside it link to each section on GitHub.

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>
  1. JSON Schemahttps://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
  2. Syntax Documentationhttps://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 Jobshttps://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

Read the full file on GitHub · 93 lines

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 6d ago First seen · 93 lines · 60 tokens per session scan A 484e1867238a

Subscribe to this mod's changes

expo-cicd-workflows is a skill published in the GitHub repository zai-org/Synapse (468 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 60 tokens to every session and 791 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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