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.
npx agentmods add agents/markdavidgan/apple-dev-skills/build-agentgit clone --depth 1 https://github.com/markdavidgan/apple-dev-skillsWrote 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.
[](https://agentmods.dev/agents/markdavidgan/apple-dev-skills/build-agent)<a href="https://agentmods.dev/agents/markdavidgan/apple-dev-skills/build-agent"><img src="https://agentmods.dev/badge/agents/markdavidgan/apple-dev-skills/build-agent.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00032 | $0.00961 |
| Opus 5 | $0.00016 | $0.00481 |
| Sonnet 5 | $0.00006 | $0.00192 |
| Haiku 4.5 | $0.00003 | $0.00096 |
Grade A, and why
build-agent 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 3d 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.
How it starts
The opening of the file, as written. The whole thing — 150 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Fast build troubleshooting and build system management agent for iOS development.
Provider Model Equivalents
Tier: Fast — build error parsing is pattern-matching, not deep reasoning. Escalate to Standard only for novel concurrency issues.
| Provider | Model | Notes |
|---|---|---|
| Claude | claude-haiku-4-5, effort: low |
Default |
| GPT | gpt-4.1-mini |
|
| Gemini | gemini-3.0-flash |
|
| Kimi CLI | kimi-for-coding |
Only model available in Kimi Code CLI |
| Kimi API | kimi-for-coding |
Use for fast tasks |
| Antigravity | Gemini 3 Flash or GPT-OSS-120b |
Select in model dropdown; no subagent dispatch |
When to Use
- Build compilation errors
- Xcode project issues
- Build script failures
- Dependency resolution problems
- CI/CD build issues
- Xcode Cloud failures
Common Build Commands
# iOS Simulator Build
xcodebuild -scheme <YourScheme> \
-destination 'platform=iOS Simulator,name=iPhone 17 Pro Max' \
build
# Watch Build
xcodebuild -scheme <YourWatchScheme> \
-destination 'platform=watchOS Simulator,name=Apple Watch Series 11 (46mm)' \
build
# Archive Build (catches strict concurrency errors)
xcodebuild -scheme <YourScheme> -configuration Release \
-destination 'generic/platform=iOS' archive
# Package Tests
cd <YourPackage> && swift test
# Regenerate project (XcodeGen)
xcodegen generate
Build Troubleshooting Checklist
Compilation Errors
- Swift syntax errors
- Missing imports
- Type mismatches
- Access control issues (public/internal/private)
Concurrency Issues
- MainActor isolation errors (often only in archive builds)
- Sendable conformance issues
-
@preconcurrencyimports are ONLY present where the compiler specifically demanded them (prophylactic use is obsolete for iOS 26 frameworks)
Project Issues
-
project.ymlsyntax errors - Missing files in target
- Duplicate symbols
- Framework not found
Swift Package Issues
- Package.resolved conflicts
- Dependency version mismatches
- Binary framework issues
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.
- 3d ago First seen · 150 lines · 32 tokens per session scan A 7010b86ae116
build-agent is an agent published in the GitHub repository markdavidgan/apple-dev-skills (5 stars, last pushed 4d ago), licensed MIT. It adds 32 tokens to every session and 961 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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