device-integrity
dpearson2699/swift-ios-skillsTesting & QACoding & code review
device-integrity is a skill in dpearson2699/swift-ios-skills, last changed 14 Jul 2026. It can name web addresses.
Verify device legitimacy and app integrity using DeviceCheck (DCDevice per-device bits) and App Attest (DCAppAttestService key generation, attestation, and assertion flows). Use when implementing fraud prevention, detecting compromised devices, validating app authenticity with Apple's servers, protecting sensitive API endpoints with attested requests, or adding device verification to a backend architecture.
At a glance
Pattern check
Nothing flagged
That isn't proof the skill is harmless.
Commit 8d90fd1 · 29 Oct 2026
How the check worksPattern check: nothing flagged
That isn't proof the skill is harmless.
Install
Each tab says whether it installs commit 8d90fd1, the one we checked, or the latest version.
OpenCode also looks in .agents/skills/ and ~/.agents/skills/, so use the Any agent steps.
Goose also looks in .agents/skills/ and ~/.agents/skills/, so use the Any agent steps.
Windsurf (Devin Desktop) also looks in .agents/skills/ and ~/.agents/skills/, so use the Any agent steps.
Zed also looks in .agents/skills/ and ~/.agents/skills/, so use the Any agent steps.
Roo Code also looks in .agents/skills/ and ~/.agents/skills/, so use the Any agent steps.
Factory Droid also looks in .agents/skills/ and ~/.agents/skills/, so use the Any agent steps.
Junie also looks in .agents/skills/ and ~/.agents/skills/, so use the Any agent steps.
Amp also looks in .agents/skills/ and ~/.agents/skills/, so use the Any agent steps.
No install command here reaches Kiro. Copy the skill's folder into .kiro/skills/ in your project, or ~/.kiro/skills/ for all your projects. dpearson2699/swift-ios-skills/skills/device-integrity (opens in a new tab)
Antigravity also looks in .agents/skills/, so the Any agent steps reach it with This project. For All projects, see where Antigravity looks.
Cline also looks in .claude/skills/, so the Claude Code steps reach it with This project. For All projects, see where Cline looks.
Claude Code
Pinned to commit 8d90fd1, the one we checked.
From your project's root folder:
tmp="$(mktemp -d)" &&git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/dpearson2699/swift-ios-skills.git "$tmp" &&git -C "$tmp" fetch -q --depth 1 origin 8d90fd121a263355a4fb44fd082af1416a5c1c2a &&git -C "$tmp" sparse-checkout set -- skills/device-integrity &&git -C "$tmp" checkout -q 8d90fd121a263355a4fb44fd082af1416a5c1c2a &&mkdir -p .claude/skills &&mkdir .claude/skills/device-integrity &&cp -R "$tmp"/skills/device-integrity/. .claude/skills/device-integrity/ &&rm -rf "$tmp"If Claude Code was already running and this created the skills folder, run /reload-skills.
Or install the ios-engineering-skills plugin it ships in. Installs the latest version, not the one we checked. Installs everything in the plugin, including any hooks, MCP servers and scripts our check doesn't cover.
claude plugin marketplace add dpearson2699/swift-ios-skills --scope project &&claude plugin install ios-engineering-skills@swift-ios-skills --scope projectClaude apps
Pinned to commit 8d90fd1, the one we checked.
Skills in the Claude apps belong to your account rather than to a project.
Make device-integrity.zip, with the skill folder at the top level:
tmp="$(mktemp -d)" &&git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/dpearson2699/swift-ios-skills.git "$tmp" &&git -C "$tmp" fetch -q --depth 1 origin 8d90fd121a263355a4fb44fd082af1416a5c1c2a &&git -C "$tmp" sparse-checkout set -- skills/device-integrity &&git -C "$tmp" checkout -q 8d90fd121a263355a4fb44fd082af1416a5c1c2a &&out="$(mktemp -d)" &&cp -R "$tmp"/skills/device-integrity "$out"/device-integrity &&(cd "$out" && zip -qr - device-integrity) > device-integrity.zip &&rm -rf "$tmp" "$out"In Claude, open Customize > Skills, select +, then + Create skill > Upload a skill, and choose device-integrity.zip.
On Free, Pro and Max plans, turn on Code execution and file creation (Create and edit files in newer settings) under Settings > Capabilities.
Codex
Pinned to commit 8d90fd1, the one we checked.
From your project's root folder:
tmp="$(mktemp -d)" &&git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/dpearson2699/swift-ios-skills.git "$tmp" &&git -C "$tmp" fetch -q --depth 1 origin 8d90fd121a263355a4fb44fd082af1416a5c1c2a &&git -C "$tmp" sparse-checkout set -- skills/device-integrity &&git -C "$tmp" checkout -q 8d90fd121a263355a4fb44fd082af1416a5c1c2a &&mkdir -p .agents/skills &&mkdir .agents/skills/device-integrity &&cp -R "$tmp"/skills/device-integrity/. .agents/skills/device-integrity/ &&rm -rf "$tmp"Codex picks up new skills on its own; restart it if this one does not appear.
Cursor
Pinned to commit 8d90fd1, the one we checked.
From your project's root folder:
tmp="$(mktemp -d)" &&git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/dpearson2699/swift-ios-skills.git "$tmp" &&git -C "$tmp" fetch -q --depth 1 origin 8d90fd121a263355a4fb44fd082af1416a5c1c2a &&git -C "$tmp" sparse-checkout set -- skills/device-integrity &&git -C "$tmp" checkout -q 8d90fd121a263355a4fb44fd082af1416a5c1c2a &&mkdir -p .cursor/skills &&mkdir .cursor/skills/device-integrity &&cp -R "$tmp"/skills/device-integrity/. .cursor/skills/device-integrity/ &&rm -rf "$tmp"Copilot & VS Code
Pinned to commit 8d90fd1, the one we checked.
From your project's root folder:
tmp="$(mktemp -d)" &&git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/dpearson2699/swift-ios-skills.git "$tmp" &&git -C "$tmp" fetch -q --depth 1 origin 8d90fd121a263355a4fb44fd082af1416a5c1c2a &&git -C "$tmp" sparse-checkout set -- skills/device-integrity &&git -C "$tmp" checkout -q 8d90fd121a263355a4fb44fd082af1416a5c1c2a &&mkdir -p .github/skills &&mkdir .github/skills/device-integrity &&cp -R "$tmp"/skills/device-integrity/. .github/skills/device-integrity/ &&rm -rf "$tmp"In a running Copilot CLI session, run /skills reload.
Or install it with gh skill, which also installs the commit we checked. Needs GitHub CLI 2.90 or later.
gh skill install dpearson2699/swift-ios-skills skills/device-integrity/SKILL.md@8d90fd121a263355a4fb44fd082af1416a5c1c2a --agent github-copilot --scope projectGemini CLI
Pinned to commit 8d90fd1, the one we checked.
From your project's root folder:
tmp="$(mktemp -d)" &&git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/dpearson2699/swift-ios-skills.git "$tmp" &&git -C "$tmp" fetch -q --depth 1 origin 8d90fd121a263355a4fb44fd082af1416a5c1c2a &&git -C "$tmp" sparse-checkout set -- skills/device-integrity &&git -C "$tmp" checkout -q 8d90fd121a263355a4fb44fd082af1416a5c1c2a &&mkdir -p .gemini/skills &&mkdir .gemini/skills/device-integrity &&cp -R "$tmp"/skills/device-integrity/. .gemini/skills/device-integrity/ &&rm -rf "$tmp"In a running session, run /skills reload.
Or use Gemini CLI’s own installer. Installs the latest version, not the one we checked.
gemini skills install https://github.com/dpearson2699/swift-ios-skills.git --path skills/device-integrity --scope workspaceAny agent
Pinned to commit 8d90fd1, the one we checked.
OpenCode, Goose, Windsurf (Devin Desktop), Zed, Roo Code, Factory Droid, Junie, Amp and Antigravity read .agents/skills in a project.
From your project's root folder:
tmp="$(mktemp -d)" &&git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/dpearson2699/swift-ios-skills.git "$tmp" &&git -C "$tmp" fetch -q --depth 1 origin 8d90fd121a263355a4fb44fd082af1416a5c1c2a &&git -C "$tmp" sparse-checkout set -- skills/device-integrity &&git -C "$tmp" checkout -q 8d90fd121a263355a4fb44fd082af1416a5c1c2a &&mkdir -p .agents/skills &&mkdir .agents/skills/device-integrity &&cp -R "$tmp"/skills/device-integrity/. .agents/skills/device-integrity/ &&rm -rf "$tmp"Or use the skills CLI from skills.sh. Installs the latest version, not the one we checked. The skills CLI reports installs to skills.sh unless you set DISABLE_TELEMETRY=1.
npx skills@1.7.4 add dpearson2699/swift-ios-skills --skill device-integrityWhat it can touch
From the files and frontmatter at commit 8d90fd1. This is how much a skill can do, not whether it is risky.
Pattern check
Pattern check: nothing flagged · commit 8d90fd1 · 29 Oct 2026
We checked every text file in this skill, at commit 8d90fd1 on 29 Oct 2026, against 45 published patterns such as download-and-run commands, hidden text and credential access. We don't run the skill, we don't read the web pages it points to, and we can't judge everything its instructions might lead an agent to do. In published tests, pattern checks like this one missed most malicious skills. Read the skill before you install it — especially anything it asks you to download or run.
How the check worksReport an incorrect finding
Outside links we did not follow
- https://sosumi.ai/documentation/devicecheck/dcdevice
- https://sosumi.ai/documentation/devicecheck/dcappattestservice
- https://sosumi.ai/documentation/devicecheck
- https://sosumi.ai/documentation/devicecheck/establishing-your-app-s-integrity
- https://sosumi.ai/documentation/devicecheck/validating-apps-that-connect-to-your-server
- https://sosumi.ai/documentation/devicecheck/attestation-object-validation-guide
- https://sosumi.ai/documentation/bundleresources/entitlements/com.apple.developer.devicecheck.appattest-environment
- https://api.devicecheck.apple.com/v1/query_two_bits
- https://api.devicecheck.apple.com/v1/update_two_bits
- https://api.devicecheck.apple.com/v1/validate_device_token
Show 4 more
- https://api.development.devicecheck.apple.com
- https://api.devicecheck.apple.com
- https://sosumi.ai/documentation/devicecheck/assessing-fraud-risk
- https://sosumi.ai/documentation/devicecheck/preparing-to-use-the-app-attest-service
Format check
Each agent reads SKILL.md a little differently. We check the file against each one's published rules; we don't run the skill in any agent.
Agent Skills specPasses
The open format from agentskills.io, held to what the strictest agents enforce, so one folder loads everywhere.
Claude CodePasses
Claude Code reads its own extra fields, ignores unknown ones, and still loads a skill whose frontmatter is broken, without its fields.
- Note
Anthropic's packaging script leaves these out: evals/. F8
Fix: Delete them, or list them in .gitignore.
- Note
Claude apps & API uploadPasses
Uploading to claude.ai or the Claude API, or packaging with Anthropic's script, accepts only the six spec fields and stops on anything else.
- Note
Anthropic's packaging script leaves these out: evals/. F8
Fix: Delete them, or list them in .gitignore.
- Note
The description is 410 characters. The claude.ai Help Center says 200 at most, though Anthropic's API docs and validator allow 1,024. D4
Fix: If the claude.ai upload refuses it, trim the description to 200 characters.
- Note
OpenAI (Codex & API)Passes
Codex finds SKILL.md by its exact name and needs a description; OpenAI's Skills API checks the frontmatter against the spec and caps uploads.
- Note
Anthropic's packaging script leaves these out: evals/. F8
Fix: Delete them, or list them in .gitignore.
- Note
VS Code & CopilotPasses
VS Code reads skills one folder below .github/skills, .claude/skills or .agents/skills and falls back to the folder name when the name is missing or differs; GitHub's Copilot docs require the exact name SKILL.md.
- Note
Anthropic's packaging script leaves these out: evals/. F8
Fix: Delete them, or list them in .gitignore.
- Note
SKILL.md
We only show SKILL.md text here when its licence clearly allows it.
Read SKILL.md on GitHub (opens in a new tab)Files
3 files
| Path | Size |
|---|---|
| SKILL.md (opens in a new tab) | 17.3 KB |
| evals/evals.json (opens in a new tab) | 3.9 KB |
| references/device-integrity-patterns.md (opens in a new tab) | 10.9 KB |
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