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 clubpay/ronykit --skill go-moderngit clone --depth 1 https://github.com/clubpay/ronykitWrote 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/clubpay/ronykit/go-modern)<a href="https://agentmods.dev/skills/clubpay/ronykit/go-modern"><img src="https://agentmods.dev/badge/skills/clubpay/ronykit/go-modern/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/clubpay/ronykit/go-modern"><img src="https://agentmods.dev/badge/skills/clubpay/ronykit/go-modern.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 | $0.00061 | $0.00748 |
| Opus 5 | $0.00030 | $0.00374 |
| Sonnet 5 | $0.00012 | $0.00150 |
| Haiku 4.5 | $0.00006 | $0.00075 |
Grade A, and why
go-modern 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 9d 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 — 67 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Modern Go
Write Go that reads like the standard library: small, explicit, and boring in the best way. Target the workspace Go version (1.25+/1.26).
When to use
- Implementing or refactoring Go packages, services, or CLIs.
- Reviewing Go for idiomatic style and current stdlib usage.
- Deciding between stdlib, a RonyKIT
x/*helper, and a third-party package.
Core idioms
- Accept interfaces, return structs. Keep interfaces small and defined by the consumer, not the producer.
- Names reveal intent. Prefer
elapsedDaysoverd; booleans as predicates (isActive,hasPermission); functions as verb+noun. Seerefactoring-patternswhen renaming is part of a structural cleanup. - Errors: wrap with
fmt.Errorf("...: %w", err); inspect witherrors.Is/errors.As. In this workspace preferrony/errsfor domain errors. - Context first.
ctx context.Contextis the first parameter; never store it in a struct. Honor cancellation and deadlines. - Zero values are useful. Design types so the zero value is ready to use.
- Generics for containers/algorithms only. Don't reach for type parameters when a concrete type or a small interface is clearer.
Use current stdlib
- Iterators (
iter.Seq,range-over-func),slices,maps,cmpfor collection work instead of hand-rolled loops. min/max/clearbuiltins.for i := range nfor counted loops.errors.Jointo combine multiple failures.context.WithoutCancel,WithDeadlineCause, andAfterFuncwhere they fit.log/slogfor structured logging (or the workspacex/telemetry/logkit).
Package selection (this workspace)
Before importing a third-party or stdlib helper, check for a RonyKIT
equivalent: IDs/JSON-byte casts/string↔number/case/collections → x/rkit;
config → x/settings; DI → x/di; errors → rony/errs; logging →
x/telemetry/logkit. Durable workflows: flow only — never import
go.temporal.io/sdk directly. See knowledge://ronyup/architecture/package-selection.
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.
- 9d ago First seen · 67 lines · 61 tokens per session scan A 3cef9c4caf34
go-modern is a skill published in the GitHub repository clubpay/ronykit (38 stars, last pushed yesterday), licensed BSD-3-Clause. It adds 61 tokens to every session and 748 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 2026-08-30.
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