golang-performance

golang-performance is a skill for Claude Code, Codex from AeonDave/malskill. It costs 49 tokens per session (874 once invoked), scanned A, original, no licence file.

A workflow for measuring and improving the performance of Go programs. It uses benchmarks and Go's profiling tools to find where time and memory are being spent.

In plain words
What is it for?
Use it to find slow code, reduce memory allocations, garbage-collection work, or contention, then measure the result.
Why use it?
It prevents performance changes based on guesswork and focuses work on code shown to be a bottleneck. It also helps check whether an improvement is repeatable.

Skill for Claude CodeCodex

Install

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.

agentmods
npx agentmods add skills/aeondave/malskill/golang-performance
Any agent
npx skills add AeonDave/malskill --skill golang-performance
Clone the repo
git clone --depth 1 https://github.com/AeonDave/malskill

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.

agentmods badge for golang-performance

README.md
[![agentmods](https://agentmods.dev/badge/skills/aeondave/malskill/golang-performance.svg)](https://agentmods.dev/skills/aeondave/malskill/golang-performance)
Your own site
<a href="https://agentmods.dev/skills/aeondave/malskill/golang-performance"><img src="https://agentmods.dev/badge/skills/aeondave/malskill/golang-performance.svg" alt="Measured on agentmods" height="20"></a>
Per session 49 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 874 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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.

ModelPer sessionOnce invoked
Fable 5 $0.00049 $0.00874
Opus 5 $0.00024 $0.00437
Sonnet 5 $0.00010 $0.00175
Haiku 4.5 $0.00005 $0.00087

Measured yesterday against content hash 008671fb88f2, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

golang-performance 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 yesterday.

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.

coding/golang-performance/SKILL.md · 105 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

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.

  1. yesterday Changed · +2 lines 008671fb88f2
  2. 5d ago First seen · 103 lines · 49 tokens per session scan A 1d39961caf21

Subscribe to this mod's changes

golang-performance is a skill published in the GitHub repository AeonDave/malskill (18 stars, last pushed today), with no licence file. It adds 49 tokens to every session and 874 once invoked, about $0.0002 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.

Related

Other skills, from other repositories

developing-genkit-go

Develop AI-powered applications using Genkit in Go. Use when the user asks to build AI features, agents, flows, or tools in Go using Genkit, or when working with Genkit Go code involving generation, prompts, streaming, tool calling, or model providers.

google/skills · 60 tokens

authoring-go-sdk-tasks

Writes Airflow task logic in Go using the Airflow Go SDK. Use when the user wants to implement Airflow tasks in Go, asks about BundleProvider/RegisterDags, the bundlev1 Registry/Dag interfaces, registering Go tasks (AddTask/AddTaskWithName), dependency injection by parameter type (context.Context, sdk.TIRunContext…

astronomer/agents · 165 tokens

deploying-go-sdk-bundles

Builds, packs, and deploys compiled Airflow Go SDK bundles so the ExecutableCoordinator can run them. Use when the user wants to compile a Go task bundle, asks about go build, go tool airflow-go-pack, the AFBNDL01 self-contained executable bundle, packing or inspecting a bundle, placing it under executablesroot…

astronomer/agents · 146 tokens

loom-golang

Go language expertise for idiomatic, production-quality code.

cosmix/loom · 15 tokens

go-programming-expert

Expert-level skill for Go programming (Go 1.25+). Covers high-performance microservices, concurrency patterns, sqlc, net/http, Gin/Echo/Fiber, gRPC, and testing in English and Indonesian.

roedyrustam/vibes-plug · 51 tokens

wasm-edge-computing-expert

Expert guide for WebAssembly (WASM) and Edge Computing. Covers WASI preview 2, Spin/Fermyon, Cloudflare Workers WASM, and high-performance browser computing / Panduan ahli untuk WebAssembly (WASM) dan Edge Computing. Mencakup WASI preview 2, Spin/Fermyon, Cloudflare Workers WASM, dan komputasi performa tinggi di…

roedyrustam/vibes-plug · 91 tokens