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claude: Skill for Claude Code

.claude/skills/go-interfaces/SKILL.md

go-interfaces is a skill for Claude Code from zarldev/claude. It costs 35 tokens per session (1,714 once invoked), scanned A, original, no licence file.

Guidance for designing Go interfaces, which are contracts describing behavior that different types can provide.

In plain words
What is it for?
Use it when defining contracts, designing dependencies, refactoring abstractions, or checking interface satisfaction.
Why use it?
It helps keep abstractions small, composable, and easier to replace or test.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

This is zarldev/claude's own configuration. It tells Claude Code how to work on claude itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything claude configures →

not rated 2repo 8mo ago A scan 35 tokens no licence
View source ↗ zarldev/claude
Reuse

Borrowing it

Nothing to install: this file belongs to zarldev/claude. 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/zarldev/claude/main/.claude/skills/go-interfaces/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/zarldev/claude

Made for: Claude Code.

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 go-interfaces

README.md
[![agentmods](https://agentmods.dev/badge/skills/zarldev/claude/go-interfaces/github.svg)](https://agentmods.dev/skills/zarldev/claude/go-interfaces)
Your own site
<a href="https://agentmods.dev/skills/zarldev/claude/go-interfaces"><img src="https://agentmods.dev/badge/skills/zarldev/claude/go-interfaces/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.

agentmods 80×15 button for go-interfaces

Your own site · 80×15
<a href="https://agentmods.dev/skills/zarldev/claude/go-interfaces"><img src="https://agentmods.dev/badge/skills/zarldev/claude/go-interfaces.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 35 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,714 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00035 $0.01714
Opus 5.5 $0.00014 $0.00686
Sonnet 5.5 $0.00007 $0.00343
Haiku 4.5 $0.00003 $0.00171

Measured 2mo ago against content hash eadabd77bcb3, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

go-interfaces 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 2mo 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.

.claude/skills/go-interfaces/SKILL.md · 313 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

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. 2mo ago First seen · 313 lines · 35 tokens per session scan A eadabd77bcb3

Subscribe to this mod's changes

go-interfaces is a skill published in the GitHub repository zarldev/claude (2 stars, last pushed 8mo ago), with no licence file. It adds 35 tokens to every session and 1,714 once invoked, about $0.0001 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 2026-08-31.

GoLanguages
Related

go-interfaces compared with skills from other repositories

go-interfaces next to 6 skills from other repositories
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