gostack SKILL.md skillA

gostack from vanducng/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add vanducng/skills/gostack@v0.1.0

Pins v0.1.0 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
vanducng/skills
Path
skills/gostack/SKILL.md
Versions recorded
4
Latest version
v0.1.0, committed Sep 11, 2026
First version recorded
May 24, 2026
Size
7,766 bytes
Repository stars
8
License
MIT

My curated Go stack reference - opinionated guide to Sam Berthe's libraries (lo Lodash helpers, oops structured errors, do v2 DI, mo monads, slog logging ecosystem, hot in-memory cache pre-1.0, ro reactive streams pre-1.0). Use when writing or reviewing Go code that imports github.com/samber/*, when deciding between these libraries and the stdlib, when adopting or upgrading any of them, or when scaffolding a new Go service and considering this ecosystem.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# gostack

My curated Go library stack - opinionated take on Sam Berthe's `github.com/samber/*` ecosystem. Generics-first, zero-dep, prolifically maintained. This skill is the decision matrix on top of his work: when to reach for each library, when to deliberately not, and which versions are battle-tested **today**.

Not a fork of upstream documentation. The libraries are Sam Berthe's; the opinions are mine, with verified-current versions pinned at the top of each reference.

## When to load which reference

The model: SKILL.md is the dispatcher. Open exactly one reference file based on the task at hand.

| If the task involves... | Open | Library |
|---|---|---|
| Collection transforms (Map, Filter, Reduce, GroupBy, Chunk, Flatten, Uniq, Zip…) | [references/lo.md](references/lo.md) | `samber/lo` |
| Errors that need context, attributes, stack traces, public messages, or APM grouping | [references/oops.md](references/oops.md) | `samber/oops` |
| Dependency injection container - services, scopes, lifecycle, graceful shutdown | [references/do.md](references/do.md) | `samber/do` (v2) |
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add vanducng/skills/gostack@sha256:41cd8d566f2dd18b

The line at the top of this page pins the label v0.1.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_zzmfoug6jomoypeh.svg)](https://markdownregistry.com/a/art_zzmfoug6jomoypeh)

4 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 4 versions of this file, between May 24, 2026 and Sep 11, 2026, about one every 37 days.

versioncommittedcommitsizeaudit
v0.1.0 latest2026-09-11 9e58ef3 7,766 BA view · diff
v0.1.02026-07-24 51405ee 8,749 BA view · diff
v0.1.02026-05-31 8556db2 8,807 BA view · diff
v0.1.02026-05-24 4ea7a09 8,812 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (7766 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

vanducng/skills · 8 stars · license MIT · pushed 2026-11-05 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_zzmfoug6jomoypeh
GET https://markdownregistry.com/api/v1/resolve?ref=vanducng/skills/gostack
GET https://markdownregistry.com/api/v1/blob/41cd8d566f2dd18bd2415dc01f9fc988328fa1ca1c7ae8200bcae302545ccbb6

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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