# Go Nil

> Go nil safety patterns. Routes to specific traps. Use when this capability is needed.

- Skill: `tomevault-io/go-nil` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add tomevault-io/go-nil`
- Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/go-nil/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: tomevault-io (https://skillmd.com/u/tomevault-io)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/tomevault-io/go-nil

---


# Nil Safety

## Route by Type
- Interface nil trap → see [interface/](interface/)
- Map nil writes → see [map/](map/)
- Slice zero-value → see [slice/](slice/)
- Pointer receivers → see [pointer/](pointer/)

## Quick Check
- [ ] Check pointers before deref
- [ ] Check maps before write
- [ ] Typed nil != nil interface

## Common Gotcha
```go
var p *int
if p == nil {  // true
    fmt.Println("nil pointer")
}
```

---
> Converted and distributed by [TomeVault](https://tomevault.io/claim/jamesprial) — claim your Tome and manage your conversions.
<!-- tomevault:4.0:skill_md:2026-04-13 -->