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 skills/pingdotgg/t3code/test-t3-mobilenpx skills add pingdotgg/t3code --skill test-t3-mobilegit clone --depth 1 https://github.com/pingdotgg/t3codeWhat 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 | $0.00095 | $0.02612 |
| Opus 5 | $0.00048 | $0.01306 |
| Sonnet 5 | $0.00019 | $0.00522 |
| Haiku 4.5 | $0.00010 | $0.00261 |
Grade A, and why
test-t3-mobile 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 2d 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 — 189 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Test T3 Mobile
Run one focused, end-to-end mobile verification pass against disposable T3 state. Use the sibling test-t3-app skill as the detailed reference for pairing-token semantics and SQLite fixtures.
Command examples use POSIX shell syntax. On Windows, use PowerShell equivalents: set variables with $env:NAME = "value", use an explicit temporary directory from [System.IO.Path]::GetTempPath(), and run multiline examples on one line or with PowerShell backticks. Use $env:ANDROID_HOME\platform-tools\adb.exe when adb is not already on PATH.
Select a viable platform
Inspect the host and the affected code before launching processes:
- On macOS with Xcode, prefer one representative iOS Simulator when the change is cross-platform so the user can watch through serve-sim. Load and follow
ios-debugger-agent, and loadios-simulator-browserwhen live streaming is available. - On macOS, Linux, or Windows with the Android SDK, use one Android Emulator when Android is the affected surface or iOS tooling is unavailable.
- When the change is platform-specific, test that platform. When neither platform is viable, report the missing SDK, emulator, or dev-client prerequisite rather than claiming verification.
Do not treat unavailable iOS tooling as a blocker when Android is a valid representative target.
Choose the lightest valid launch path
- For JavaScript, TypeScript, or asset-only changes, reuse a compatible installed development client and start Metro. Do not rebuild native code merely to load a new bundle.
- For native source, native dependencies, entitlements, config plugins, or generated project changes, rebuild the affected platform.
- Use
vp run ios:devorvp run android:devonly when an Expo clean prebuild is actually required; both commands regenerate the native project. - If the user requested no native rebuild and no compatible app is installed, reuse an existing compatible
.appor.apkartifact when available. Otherwise report the missing dev client instead of silently rebuilding.
What ships with it
2 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.
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.
- 2d ago First seen · 189 lines · 95 tokens per session scan A 28e170f93ec9
test-t3-mobile is a skill published in the GitHub repository pingdotgg/t3code (21,041 stars, last pushed 3d ago), licensed MIT. It adds 95 tokens to every session and 2,612 once invoked, about $0.0005 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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