Borrowing it
Nothing to install: this file belongs to rodydavis/signals.dart. 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/rodydavis/signals.dart/main/.agents/skills/signals_hooks/SKILL.mdgit clone --depth 1 https://github.com/rodydavis/signals.dartWrote 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/rodydavis/signals.dart/signals_hooks)<a href="https://agentmods.dev/skills/rodydavis/signals.dart/signals_hooks"><img src="https://agentmods.dev/badge/skills/rodydavis/signals.dart/signals_hooks/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/rodydavis/signals.dart/signals_hooks"><img src="https://agentmods.dev/badge/skills/rodydavis/signals.dart/signals_hooks.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 | $0.00016 | $0.01038 |
| Opus 5 | $0.00008 | $0.00519 |
| Sonnet 5 | $0.00003 | $0.00208 |
| Haiku 4.5 | $0.00002 | $0.00104 |
Grade A, and why
signals_hooks 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 — 46 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Signals Hooks Skill
This skill provides comprehensive instructions and reference guidelines for utilizing signals_hooks package in Flutter applications. It integrates signals_flutter reactivity with the dynamic widget-state lifecycles of flutter_hooks.
Modern Positional Options API
In signals.dart v7, all hooks have been migrated to use a clean positional Options pattern instead of verbose named parameters. The positional parameters are structured as [keys, options]. To supply options (like name, autoDispose, or equality inside classes like SignalOptions, AsyncSignalOptions, or ListSignalOptions), they must be passed as the second positional optional argument, with the keys dependency list passed as the first positional optional argument (e.g., useSignal(value, const [], SignalOptions(name: 'counter'))).
Hook Reference Summary Table
| Hook Name | Options Type | Description |
|---|---|---|
| useSignal | SignalOptions |
Wraps a standard mutable Signal bound to the hook state lifecycle. |
| useComputed | ComputedOptions |
Creates a read-only Computed signal that caches computed values and tracks changes. |
| useSignalEffect | - | Registers a side-effect callback that automatically disposes when the hook unmounts. |
| useExistingSignal | - | Safely binds an existing, external signal to automatically rebuild the widget on change. |
| useSignalValue | - | Directly extracts and watches the value of a signal, returning the unwrapped T value. |
| useFutureSignal | AsyncSignalOptions |
Triggers an asynchronous callback and returns its result wrapped in a FutureSignal. |
| useStreamSignal | AsyncSignalOptions |
Subscribes to a Stream and exposes its events via a StreamSignal. |
| useAsyncSignal | AsyncSignalOptions |
Wraps an asynchronous task state inside a manageable AsyncSignal. |
| useAsyncComputed | AsyncSignalOptions |
Creates a reactive computed signal driven by an asynchronous callback. |
| useValueNotifierToSignal | SignalOptions |
Bridges a standard Flutter ValueNotifier to a mutable reactive Signal. |
| useValueListenableToSignal | SignalOptions |
Bridges a standard Flutter ValueListenable to a read-only ReadonlySignal. |
| useListSignal | ListSignalOptions |
Creates a reactive ListSignal for list collections. |
| useSetSignal | SetSignalOptions |
Creates a reactive SetSignal for set collections. |
| useIterableSignal | IterableSignalOptions |
Creates a reactive IterableSignal for iterable collections. |
| useMapSignal | MapSignalOptions |
Creates a reactive MapSignal for key-value collections. |
| useTrackedSignal | TrackedSignalOptions |
Creates a TrackedSignal that remembers its previous values. |
| useQueueSignal | QueueSignalOptions |
Creates a reactive QueueSignal for queue collections. |
| useChangeStackSignal | ChangeStackSignalOptions |
Creates a ChangeStackSignal that manages undo/redo history. |
| useLinkedSignal | LinkedSignalOptions |
Creates a writable computed LinkedSignal bridging two signals. |
| useLazySignal | SignalOptions |
Creates a LazySignal initialized lazily on first access. |
What ships with it
20 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.
- hooks/use-async-computed.md 498 B
- hooks/use-async-signal.md 440 B
- hooks/use-change-stack-signal.md 596 B
- hooks/use-computed.md 445 B
- hooks/use-existing-signal.md 417 B
- hooks/use-future-signal.md 595 B
- hooks/use-iterable-signal.md 462 B
- hooks/use-lazy-signal.md 502 B
- hooks/use-linked-signal.md 541 B
- hooks/use-list-signal.md 437 B
- hooks/use-map-signal.md 403 B
- hooks/use-queue-signal.md 423 B
- hooks/use-set-signal.md 396 B
- hooks/use-signal-effect.md 490 B
- hooks/use-signal-value.md 403 B
- hooks/use-signal.md 435 B
- hooks/use-stream-signal.md 475 B
- hooks/use-tracked-signal.md 516 B
- hooks/use-value-listenable-to-signal.md 566 B
- hooks/use-value-notifier-to-signal.md 585 B
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 First seen · 46 lines · 16 tokens per session scan A 1af53c83a5b0
signals_hooks is a skill published in the GitHub repository rodydavis/signals.dart (814 stars, last pushed yesterday), licensed Apache-2.0. It adds 16 tokens to every session and 1,038 once invoked, about $0.0001 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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