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/serverpod/skills-registry/riverpod-selectnpx skills add serverpod/skills-registry --skill riverpod-selectgit clone --depth 1 https://github.com/serverpod/skills-registryWrote 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/serverpod/skills-registry/riverpod-select)<a href="https://agentmods.dev/skills/serverpod/skills-registry/riverpod-select"><img src="https://agentmods.dev/badge/skills/serverpod/skills-registry/riverpod-select.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00065 | $0.00349 |
| Opus 5 | $0.00032 | $0.00175 |
| Sonnet 5 | $0.00013 | $0.00070 |
| Haiku 4.5 | $0.00006 | $0.00035 |
Grade A, and why
riverpod-select 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 6d 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.
What it actually says
Riverpod — Reducing rebuilds with select
Instructions
By default, ref.watch(provider) rebuilds whenever the provider's value changes (by reference/equality). If you only use a subset of the state (e.g. one field of a User), the widget still rebuilds when other fields change.
Use select to watch only a part of the state. Rebuilds happen only when the selected value changes (by ==).
Syntax
// Rebuild only when firstName changes
String name = ref.watch(provider.select((it) => it.firstName));
return Text('Hello $name');
You can call select multiple times for different properties. The selected value should be immutable; mutating a returned List/object in place will not trigger a rebuild.
Async providers: selectAsync
For async providers you often use ref.watch(provider.future). To select on the resolved data instead of the whole AsyncValue, use selectAsync (when available): it applies a select on the data and returns a Future. See the Riverpod docs for the exact API in your version.
When to use
- Only when the "other" properties change often and you have measured that rebuilds are a bottleneck. Select adds a small cost and extra complexity. Prefer normal watch unless you need the optimization.
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.
- 6d ago First seen · 31 lines · 65 tokens per session scan A 0dde50de94c3
riverpod-select is a skill published in the GitHub repository serverpod/skills-registry (9 stars, last pushed 6mo ago), licensed BSD-3-Clause. It adds 65 tokens to every session and 349 once invoked, about $0.0003 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 2026-08-31.
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