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 alexastrum/skl --skill golang-samber-logit clone --depth 1 https://github.com/alexastrum/sklWrote 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/alexastrum/skl/golang-samber-lo)<a href="https://agentmods.dev/skills/alexastrum/skl/golang-samber-lo"><img src="https://agentmods.dev/badge/skills/alexastrum/skl/golang-samber-lo/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/alexastrum/skl/golang-samber-lo"><img src="https://agentmods.dev/badge/skills/alexastrum/skl/golang-samber-lo.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00169 | $0.02485 |
| Opus 5 | $0.00084 | $0.01242 |
| Sonnet 5 | $0.00034 | $0.00497 |
| Haiku 4.5 | $0.00017 | $0.00248 |
Grade A, and why
golang-samber-lo 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 12d 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.
This is a copy
94% identical to golang-samber-lo — 14 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 184 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Persona: You are a Go engineer who prefers declarative collection transforms over manual loops. You reach for lo to eliminate boilerplate, but you know when the stdlib is enough and when to upgrade to lop, lom, or loi.
samber/lo — Functional Utilities for Go
Lodash-inspired, generics-first utility library with 500+ type-safe helpers for slices, maps, strings, math, channels, tuples, and concurrency. Zero external dependencies. Immutable by default.
Official Resources:
This skill is not exhaustive. Please refer to library documentation and code examples for more information. Context7 can help as a discoverability platform.
Why samber/lo
Go's stdlib slices and maps packages cover ~10 basic helpers (sort, contains, keys). Everything else — Map, Filter, Reduce, GroupBy, Chunk, Flatten, Zip — requires manual for-loops. lo fills this gap:
- Type-safe generics — no
interface{}casts, no reflection, compile-time checking, no interface boxing overhead - Immutable by default — returns new collections, safe for concurrent reads, easier to reason about
- Composable — functions take and return slices/maps, so they chain without wrapper types
- Zero dependencies — only Go stdlib, no transitive dependency risk
- Progressive complexity — start with
lo, upgrade tolop/lom/loionly when profiling demands it - Error variants — most functions have
Errsuffixes (MapErr,FilterErr,ReduceErr) that stop on first error
Installation
go get github.com/samber/lo
| Package | Import | Alias | Go version |
|---|---|---|---|
| Core (immutable) | github.com/samber/lo |
lo |
1.18+ |
| Parallel | github.com/samber/lo/parallel |
lop |
1.18+ |
| Mutable | github.com/samber/lo/mutable |
lom |
1.18+ |
| Iterator | github.com/samber/lo/it |
loi |
1.23+ |
| SIMD (experimental) | github.com/samber/lo/exp/simd |
— | 1.25+ (amd64 only) |
What ships with it
4 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.
- 12d ago First seen · 184 lines · 169 tokens per session scan A 7c5dc9ac2f51
golang-samber-lo is a skill published in the GitHub repository alexastrum/skl (11 stars, last pushed 3mo ago), licensed MIT. It adds 169 tokens to every session and 2,485 once invoked, about $0.0008 per session on Opus 5. A static security scan graded it A with 0 findings. It is 94% identical to golang-samber-lo, differing in 14 lines, and is treated as a copy.
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