Borrowing it
Nothing to install: this file belongs to andrzejchm/fdb. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/andrzejchm/fdb/main/.agents/skills/testing-fdb/SKILL.mdgit clone --depth 1 https://github.com/andrzejchm/fdbWrote 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/skills/andrzejchm/fdb/testing-fdb)<a href="https://agentmods.dev/skills/andrzejchm/fdb/testing-fdb"><img src="https://agentmods.dev/badge/skills/andrzejchm/fdb/testing-fdb/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/andrzejchm/fdb/testing-fdb"><img src="https://agentmods.dev/badge/skills/andrzejchm/fdb/testing-fdb.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Agent Snooping · line 154 Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
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 5.1 | $0.00054 | $0.01302 |
| Opus 5.5 | $0.00022 | $0.00521 |
| Sonnet 5.5 | $0.00011 | $0.00260 |
| Haiku 4.5 | $0.00005 | $0.00130 |
Grade A, and why
testing-fdb 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 11d 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 — 164 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Prerequisites
- Dart SDK >= 3.0.0
- Flutter SDK
- Task (
brew install go-task) - A running iOS Simulator or Android emulator
Test App
A minimal Flutter app lives in example/test_app/ and is used as the target for all integration tests.
Setup
task setup # dart pub get + flutter pub get in test app
Running Tests
Full smoke test
Runs all fdb commands end-to-end: launch, attach, status, reload, restart, logs, tree, screenshot, select, kill.
task smoke # auto-detect device
task smoke DEVICE=iPhone-16 # specific device
Individual command tests
The app must already be running (via task test:launch) before running individual tests:
task test:launch DEVICE=iPhone-16
task test:launch-verbose DEVICE=iPhone-16
task test:attach DEVICE=iPhone-16
task test:devices
task test:status
task test:status-after-interrupted-launch
task test:reload
task test:restart
task test:logs
task test:logs-tag
task test:syslog
task test:crash-report
task test:tree
task test:describe
task test:describe-textfield
task test:describe-grid
task test:describe-nested-gestures
task test:describe-router
task test:screenshot
task test:native-view-tap
task test:deeplink
task test:native-tap
task test:native-button
task test:native-button-lock # explicit sleep/wake; disposable simulator/emulator for unattended runs
task test:native-swipe
task test:grant-permission
task test:simulator
task test:select
task test:tap
task test:double-tap
task test:longpress
task test:tap-at
task test:tap-disappearing-widget
task test:tap-ignore-pointer-wrapper
task test:tap-cupertino-button
task test:tap-custom-button
task test:tap-covered-button
task test:tap-disabled-button
task test:tap-ref
task test:input
task test:input-rich
task test:scroll
task test:scroll-to
task test:mem
task test:mem-native
task test:gc
task test:heap-dump
task test:wait
task test:swipe
task test:swipe-path
task test:back
task test:back-nested
task test:clean
task test:ext
task test:shared-prefs
task test:app-died
task test:kill
task test:status-stopped
task test:session-dir
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.
- 11d ago Changed · +3 lines 5be2856af089
- 15d ago Changed · +1 lines a01b161d02df
- 18d ago Changed · +2 lines 7df4e9a4ce92
- 19d ago Changed · +3 lines 8fa901f81b0c
- 1mo ago First seen · 155 lines · 54 tokens per session scan A 6df7202e10db
testing-fdb is a skill published in the GitHub repository andrzejchm/fdb (46 stars, last pushed 12d ago), licensed MIT. It adds 54 tokens to every session and 1,302 once invoked, about $0.0002 per session on Opus 5.5. 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.
Other skills, from other repositories
android_ui_verification
Automated end-to-end UI testing and verification on an Android Emulator using ADB.
solopi-ai
A command-line framework for testing Android apps and devices with SoloPi, including on-device or cloud AI decision models. It manages devices, test cases, recorded interactions, replays, performance history, and evidence.
dogfood
Systematically explore and test a mobile app on iOS/Android with agent-device to find bugs, UX issues, and other problems. Use when asked to dogfood, QA, exploratory test, find issues, bug hunt, or test this app on mobile.
ios-simulator
Verify and debug native, React Native, Expo, or Flutter apps on an iOS Simulator with agent-device. Use when an agent needs to launch an app, inspect its live UI, tap, type, scroll, validate a code change, collect failure evidence, or reproduce a workflow on an iPhone or iPad Simulator.
eas-simulator
Run and control a user's app on a remote iOS/Android simulator hosted on EAS cloud. Read before running any eas simulator: commands - it has the current syntax for this experimental API. Use whenever the user needs a simulator they can't run locally - 'run my app on a cloud simulator', 'use eas simulator to…
mobile-automation
Control Android and iOS devices, emulators and simulators — launch apps, tap, swipe, type, take screenshots, read the accessibility tree. Use when a task involves a mobile device or app, mobile UI testing, or reproducing a bug on a phone.