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 skills add andrzejchm/fdb --skill skillgit 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/skill)<a href="https://agentmods.dev/skills/andrzejchm/fdb/skill"><img src="https://agentmods.dev/badge/skills/andrzejchm/fdb/skill/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/skill"><img src="https://agentmods.dev/badge/skills/andrzejchm/fdb/skill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00261 | $0.02189 |
| Opus 5.5 | $0.00104 | $0.00876 |
| Sonnet 5.5 | $0.00052 | $0.00438 |
| Haiku 4.5 | $0.00026 | $0.00219 |
Grade A, and why
using-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 — 82 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Overview - skill version 1.15.0
Version check: Run
fdb --version. Expected:fdb 1.15.0. This skill may describe unreleased branch behavior. Update:dart pub global activate --source git https://github.com/andrzejchm/fdb.git
Install
dart pub global activate --source git https://github.com/andrzejchm/fdb.git
Verify: fdb status
fdb_helper setup (required for in-app UI/data commands)
The describe, tap, double-tap, longpress, input, scroll, scroll-to, wait, swipe, swipe-path, back, clean, and shared-prefs commands require fdb_helper in the Flutter app under test. Some platform screenshot fallbacks also use it. Adding fdb_helper also enables automatic VM service URI discovery for fdb attach on Android and iOS — no manual --debug-url needed.
pubspec.yaml:
dev_dependencies:
fdb_helper: ^1.15.0
main.dart:
import 'package:fdb_helper/fdb_helper.dart';
import 'package:flutter/foundation.dart';
void main() {
if (!kReleaseMode) {
FdbBinding.ensureInitialized();
}
runApp(MyApp());
}
After adding fdb_helper, run flutter pub get and relaunch the app.
Command index
Run fdb skill <topic> to print full docs, flags, output tokens, and best practices for a topic.
| Topic | Commands | Run |
|---|---|---|
| launch | devices, launch, attach, doctor, reload, restart, status, kill, deeplink |
fdb skill launch |
| interact | screenshot, tree, describe, select, selected, native-tap (--at x,y / --text <label>; system dialogs and permission prompts, Android + iOS simulator), native-swipe (OS panels; --from x,y --to x,y --duration ms), native-button (home / lock; hardware press), tap, longpress, double-tap, input (any text input incl. flutter_quill; --action send), scroll, scroll-to, swipe, swipe-path, back |
fdb skill interact |
| data | shared-prefs, clean, ext, grant-permission |
fdb skill data |
| diagnostics | logs, syslog, crash-report + websocat fallback |
fdb skill diagnostics |
| memory | mem, gc, heap |
fdb skill memory |
| simulator | simulator (appearance, text-size, status-bar, location, push, defaults) |
fdb skill simulator |
What ships with it
6 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.
- 11d ago Changed · +7 lines fce584de2422
- 14d ago Changed · +1 lines · +14 tokens per session 7f7423c1cb52
- 15d ago Changed 032511d6ba28
- 18d ago Changed · +4 lines 55d0a7957315
- 19d ago Changed · +8 lines 557498692047
- 24d ago Changed f1cd217997c7
- 1mo ago First seen · 62 lines · 247 tokens per session scan A 632c06915af9
using-fdb is a skill published in the GitHub repository andrzejchm/fdb (46 stars, last pushed 12d ago), licensed MIT. It adds 261 tokens to every session and 2,189 once invoked, about $0.0010 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.
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