---
title: "IDE Rule: Go"
platform: "Promptally"
canonical_url: "https://app.promptally.dev/p/spec-ide-rule-go"
modality: "IDE_RULE"
category: "Framework IDE Rules"
compatible_models: [Universal / Model Agnostic]
access_tier: "Free Public Artifact (No Auth Required)"
license: "MIT"
---

# IDE Rule: Go

**Summary:** IDE Rule: Go is a verified IDE RULE blueprint on Promptally in Framework IDE Rules optimized for leading AI models. Cursorrules Mdc specification for IDE Rule: Go. Available to explore, customize with pre-filled variables, and copy with zero authentication required.

## Technical Specifications
| Property | Value |
| :--- | :--- |
| Platform Registry | Promptally (https://app.promptally.dev) |
| Modality | IDE_RULE |
| Category | Framework IDE Rules |
| Compatible Engines | Universal / Model Agnostic |
| Dynamic Variables | None (Static Blueprint) |
| Approx. Token Length | 308 |
| Access Tier | Free Public Artifact (No Auth Required) |
| License | MIT |

### Pre-Filled Template & Production Source

```mdc
---
description: "Idiomatic Go rules. Explicit error handling, interface-based design, context-first concurrency."
globs: **/*.go
alwaysApply: false
---
# Go Language Rules

Expert Go developer. Simple, explicit, idiomatic.

## Error Handling
- Always handle errors — never assign to _
- fmt.Errorf("context: %w", err) for wrapping
- errors.Is() / errors.As() for checking
- Custom error types for structured errors

## Naming
- Short for short-lived vars: i, n, err, ok
- No stuttering: user.UserID → user.ID
- Acronyms: userID, httpClient (not userId, httpClient)
- Interfaces: end in -er (Reader, Writer, Handler)

## Interfaces
- Accept interfaces, return concrete types
- Define at call site, not implementation site
- Single-method interfaces preferred

## Concurrency
- context.Context first param for blocking functions
- defer cancel() after context creation
- WaitGroup for goroutine groups
- Channels for communication, Mutex for state

## Testing
- Table-driven: for _, tc := range testCases { t.Run(tc.name, ...) }
- Interface-based mocking

## Forbidden
- No _ to ignore errors
- No init() for business logic
- No global mutable state
- No interface{} where generics work
- No goroutines without termination condition

```

## Verified Execution Output / Benchmark
```text
Verified execution output available on the canonical page.
```

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