Neva is a statically typed programming language in which programs are message-passing graphs: nodes exchange data through ports and run concurrently by default. It is for developers building compiled programs with dataflow control, visual editing, and interoperability with Go. The catalogue includes skills and instructions for working with Neva.
Borrowing it
Nothing to install: this file belongs to nevalang/neva. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/nevalang/neva/main/.codex/skills/go/SKILL.mdgit clone --depth 1 https://github.com/nevalang/nevaWrote 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.
[](https://agentmods.dev/skills/nevalang/neva/go)<a href="https://agentmods.dev/skills/nevalang/neva/go"><img src="https://agentmods.dev/badge/skills/nevalang/neva/go/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.
<a href="https://agentmods.dev/skills/nevalang/neva/go"><img src="https://agentmods.dev/badge/skills/nevalang/neva/go.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00021 | $0.00347 |
| Opus 5.5 | $0.00008 | $0.00139 |
| Sonnet 5.5 | $0.00004 | $0.00069 |
| Haiku 4.5 | $0.00002 | $0.00035 |
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 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.
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.modas 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
gofmton changed Go files. - Respect active lints.
- Never add file-wide or package-wide
nolintdirectives. If suppression is unavoidable, keep it narrowly scoped to the exact line/rule and add a short justification. - Prefer
Makefiletargets 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/**, followdocs/developer/runtime-functions.md.
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.
- 2mo ago First seen · 38 lines · 21 tokens per session scan A 3355f260e68b
go is a skill published in the GitHub repository nevalang/neva (1,086 stars, last pushed 2mo ago), licensed MIT. It adds 21 tokens to every session and 347 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 2026-09-01.
go compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| gonevalang/neva | Skill | 1.1k | 2mo ago | MIT | A | 21 | Codex |
| pi-loop-forensicsdimetron/pi-go | Skill | 222 | 3d ago | MIT | A | 65 | Claude Code, Codex |
| nightly-session-watchdimetron/pi-go | Skill | 222 | 3d ago | MIT | A | 78 | Claude Code, Codex |
| kessoku-dimazrean/kessoku | Skill | 143 | 3d ago | MIT | A | 52 | Claude Code, Codex |
| functions-developmentCrowdStrike/foundry-skills | Skill | 36 | yesterday | MIT | A | 195 | Claude Code |
| go-performanceDankosik/go-service-template-rest | Skill | 8 | yesterday | MIT | A | 29 | Claude Code, Codex |
| golang-error-handlingHarmeet10000/skills | Skill | 7 | 6mo ago | MIT | A | 94 | Claude Code |