A set of patterns and practices for building applications in Go, a programming language. It covers concurrent work, web services, performance checks, and common Go design techniques.

Building Go applications with goroutines and channels, creating gRPC or REST services, profiling performance with pprof, and applying generics, interfaces, and error handling.

It provides guidance for handling several tasks at once, building services, finding slow code, and managing errors in Go programs.

How devantler-tech/ksail configures Claude Code and Codex

Reuse

Borrowing it

Nothing to install: this file belongs to devantler-tech/ksail. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/devantler-tech/ksail/main/.agents/skills/golang-pro/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/devantler-tech/ksail

Made for: Claude Code, Codex.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/devantler-tech/ksail/golang-pro/github.svg)](https://agentmods.dev/skills/devantler-tech/ksail/golang-pro)

Your own site

<a href="https://agentmods.dev/skills/devantler-tech/ksail/golang-pro"><img src="https://agentmods.dev/badge/skills/devantler-tech/ksail/golang-pro/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/devantler-tech/ksail/golang-pro"><img src="https://agentmods.dev/badge/skills/devantler-tech/ksail/golang-pro.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 95 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,244 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin unknown No closer match found in the catalogue.

Token cost

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	$0.00095	$0.01244
Opus 5.5	$0.00038	$0.00498
Sonnet 5.5	$0.00019	$0.00249
Haiku 4.5	$0.00010	$0.00124

Measured 1mo ago against content hash 603e3a8c9676, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

golang-pro 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 1mo 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.

.agents/skills/golang-pro/SKILL.md · 132 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Files

What ships with it

5 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.

Changes

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.

1mo ago Changed · +3 lines 603e3a8c9676
1mo ago Changed · +1 lines 2369e7700af2
2mo ago First seen · 128 lines · 95 tokens per session scan A 734431452baa

Subscribe to this mod's changes

golang-pro is a skill published in the GitHub repository devantler-tech/ksail (164 stars, last pushed yesterday), with no licence file. It adds 95 tokens to every session and 1,244 once invoked, about $0.0004 per session on Opus 5.5. 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.

Backend and APIs Go Languages chat cli github-copilot kubernetes mcp-server tui

golang-pro next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
golang-prodevantler-tech/ksail	Skill	164	yesterday	none	A	95	Claude Code, Codex
printing-pressmvanhorn/cli-printing-press	Skill	4.9k	yesterday	MIT	A	86	Claude Code
goericrisco/rsc-harness	Skill	503	2d ago	MIT	A	86	Claude Code, Codex
refresh-generatedGoldziher/ai-rulez	Skill	167	yesterday	MIT	A	21	Claude Code
regen-api-clientGoldziher/ai-rulez	Skill	167	yesterday	MIT	A	31	Claude Code
golang-samber-doalexastrum/skl	Skill	10	4mo ago	MIT	A	74	Claude Code
goznlgis/opengis-skills	Skill	76	10d ago	MIT	D	88	Claude Code, Codex

ksail: Skill for Claude Code