go

go is a skill for Claude Code, Codex from nevalang/neva. It costs 21 tokens per session (347 once invoked), scanned A, original, MIT.

A set of instructions for making changes to Go code in the Neva project. Go is the programming language used for parts of the project, and the instructions cover coding style, errors, formatting, version limits, and checks.

In plain words
What is it for?
Use it when authoring, refactoring, debugging, or reviewing Go files in Neva.
Why use it?
It helps an agent match the repository's existing Go conventions and avoid unsupported language features. It also requires formatting and handling errors explicitly.

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/nevalang/neva/go
Any agent
npx skills add nevalang/neva --skill go
Clone the repo
git clone --depth 1 https://github.com/nevalang/neva

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 go

README.md
[![agentmods](https://agentmods.dev/badge/skills/nevalang/neva/go.svg)](https://agentmods.dev/skills/nevalang/neva/go)
Your own site
<a href="https://agentmods.dev/skills/nevalang/neva/go"><img src="https://agentmods.dev/badge/skills/nevalang/neva/go.svg" alt="Measured on agentmods" height="20"></a>
Per session 21 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 347 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original 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 $0.00021 $0.00347
Opus 5 $0.00010 $0.00173
Sonnet 5 $0.00004 $0.00069
Haiku 4.5 $0.00002 $0.00035

Measured 3d ago against content hash 3355f260e68b, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

go 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 3d 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.

.codex/skills/go/SKILL.md · 38 lines

What it actually says

Go

Use this skill for changes touching *.go. Read the matching developer documentation named by AGENTS.md before editing.

Rules

  • Follow idiomatic Go as described by Effective Go, the Go documentation, and established repository patterns.
  • Source of truth for style and APIs: .golangci.yml, go.mod, and existing code patterns.
  • Treat go.mod as the version ceiling for Go features and stdlib APIs.
  • Prefer modern Go idioms available in the target version over legacy patterns.
  • Return early to keep control flow flat. Prefer straightforward code and standard-library primitives over clever abstractions.
  • Always run gofmt on changed Go files.
  • Respect active lints.
  • Never add file-wide or package-wide nolint directives. If suppression is unavoidable, keep it narrowly scoped to the exact line/rule and add a short justification.
  • Prefer Makefile targets for standard checks when applicable.
  • Do not add helper functions or methods unless they abstract at least two meaningful operations or remove real complexity.
  • Never ignore errors, including assignment to _. Either return an error (wrapping when useful) or handle it locally; do not report an error and then continue as though it were handled.
  • Add doc comments for new exported Go functions and types.

Runtime

  • For internal/runtime/funcs/**, follow docs/developer/runtime-functions.md.
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. 3d ago First seen · 38 lines · 21 tokens per session scan A 3355f260e68b

Subscribe to this mod's changes

go is a skill published in the GitHub repository nevalang/neva (1,079 stars, last pushed 11d ago), licensed MIT. It adds 21 tokens to every session and 347 once invoked, about $0.0001 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 2026-09-01.