eas-build-error

eas-build-error is a skill for Claude Code, Codex from flurdy/agent-skills. It costs 36 tokens per session (1,028 once invoked), scanned A, original, MIT.

A command that checks the latest Expo Application Services build and shows its status and failure logs. Expo Application Services is a cloud service for building mobile apps for iOS and Android.

In plain words
What is it for?
Use it to inspect the latest iOS or Android build, retrieve errors, or investigate a particular EAS build.
Why use it?
It avoids searching through build dashboards and logs manually when a mobile build fails. It can inspect the newest build or a specific build by ID.

Skill for Claude CodeCodex

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/flurdy/agent-skills/eas-build-error
Any agent
npx skills add flurdy/agent-skills --skill eas-build-error
Clone the repo
git clone --depth 1 https://github.com/flurdy/agent-skills

Made for: Claude Code, Codex.

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 eas-build-error

README.md
[![agentmods](https://agentmods.dev/badge/skills/flurdy/agent-skills/eas-build-error.svg)](https://agentmods.dev/skills/flurdy/agent-skills/eas-build-error)
Your own site
<a href="https://agentmods.dev/skills/flurdy/agent-skills/eas-build-error"><img src="https://agentmods.dev/badge/skills/flurdy/agent-skills/eas-build-error.svg" alt="Measured on agentmods" height="20"></a>
Per session 36 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,028 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 $0.00036 $0.01028
Opus 5 $0.00018 $0.00514
Sonnet 5 $0.00007 $0.00206
Haiku 4.5 $0.00004 $0.00103

Measured 5d ago against content hash a582a1c7c99d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

eas-build-error 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 5d ago.

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.

skills/eas-build-error/SKILL.md · 126 lines

How it starts

The opening of the file, as written. The whole thing — 126 lines — stays where its author put it; the contents beside it link to each section on GitHub.

EAS Build Error - View latest build status and errors

Show the status and errors from the latest EAS build.

Usage

/eas-build-error              # Latest build (any platform)
/eas-build-error ios           # Latest iOS build
/eas-build-error android       # Latest Android build
/eas-build-error <build-id>    # Specific build by ID

Implementation

Step 1: Get the build

Parse the argument to determine what to fetch:

  • If argument looks like a UUID (contains hyphens, 36 chars): treat as build ID
    npx eas build:view <build-id> --json
    
  • If argument is ios or android: filter by platform
    npx eas build:list --limit=1 --platform=<platform> --json --non-interactive
    
  • If no argument: get latest build across all platforms
    npx eas build:list --limit=1 --json --non-interactive
    

Step 2: Display build summary

From the JSON output, extract and display:

## EAS Build: <STATUS>

| Field       | Value                          |
|-------------|--------------------------------|
| ID          | <id>                           |
| Platform    | <platform>                     |
| Profile     | <buildProfile>                 |
| Status      | <status> (with emoji: ✓/✗/⏳)  |
| Commit      | <gitCommitHash> <gitCommitMessage> |
| Started     | <createdAt>                    |
| Duration    | <computed from metrics>        |
| Logs        | <link to expo.dev>             |

Step 3: Show errors (if build failed)

If status is ERRORED or CANCELED:

  1. Show the error field from the JSON:

    ### Error
    <error.message>
    
  2. Fetch detailed logs — try each URL in logFiles array:

    • Use WebFetch on each log URL
    • Extract error lines, warnings, and failure details
    • If URLs return 404 (expired), note that logs have expired
  3. Try xcode build logs if available:

    • Check artifacts.xcodeBuildLogsUrl
    • Fetch and extract compilation errors
  4. If all log URLs have expired, tell the user:

    Log URLs have expired (15-minute TTL).
    View full logs at: <expo.dev link>
    

Read the full file on GitHub · 126 lines

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. 5d ago First seen · 126 lines · 36 tokens per session scan A a582a1c7c99d

Subscribe to this mod's changes

eas-build-error is a skill published in the GitHub repository flurdy/agent-skills (7 stars, last pushed 6d ago), licensed MIT. It adds 36 tokens to every session and 1,028 once invoked, about $0.0002 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 2026-08-31.

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