go

A set of coding rules for Go, a programming language commonly used for services, command-line tools, and infrastructure software. It covers naming, types, imports, packages, and project structure.

In plain words
What is it for?
Use it when writing or reviewing Go packages, structs, interfaces, imports, names, project folders, and related code organisation.
Why use it?
It gives the agent consistent conventions for arranging Go code and choosing clear names and types. This reduces avoidable style and organisation problems during development.

Cursor rule

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 rules/chand1012/cursorrules/go
Clone the repo
git clone --depth 1 https://github.com/chand1012/cursorrules
Per session 0 Nothing until a file matches its globs; then the whole rule loads.
When invoked 829 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 $0.00000 $0.00829
Opus 5 $0.00000 $0.00415
Sonnet 5 $0.00000 $0.00166
Haiku 4.5 $0.00000 $0.00083

Measured 2d ago against content hash 0dde40e169ac, 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 2d 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.

languages/go.mdc · 73 lines

How it starts

The opening of the file, as written. The whole thing — 73 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Go Best Practices

Package and Import Statements

  • Use meaningful package names that reflect their purpose (e.g., auth, config).
  • Group imports in this order: standard library, third-party, then local packages, separated by blank lines.
  • Avoid import cycles to maintain clean dependency graphs.

Type System

  • Use struct types to define complex data structures.
  • Define interface types to specify behavior and enable polymorphism.
  • Use type aliases sparingly for clarity (e.g., type ID string).
  • Leverage Go’s built-in types (e.g., map, slice) and composite types effectively.
  • Avoid unnecessary type conversions to maintain type safety.
  • Use struct embedding for composition instead of inheritance.

Naming Conventions

  • Use camelCase for variable and function names (e.g., getUser).
  • Use PascalCase for type names and exported identifiers (e.g., UserService).
  • Use ALL_CAPS for constants (e.g., MAX_RETRIES).
  • Be descriptive yet concise in naming (e.g., userCount over cnt).

Code Organization

  • Follow the standard Go project layout (e.g., cmd/, pkg/, internal/).
  • Keep related code within the same package for cohesion.
  • Use subdirectories for larger packages to organize functionality (e.g., api/handlers).

Functions and Methods

  • Keep functions short and focused on a single responsibility.
  • Use named return values for clarity in complex functions (e.g., func getData() (data string, err error)).
  • Avoid side effects in functions to improve predictability.

Best Practices

  • Follow the Go proverb: "A little copying is better than a little dependency."
  • Use interfaces to define behavior and decouple components.
  • Prefer composition over inheritance using embedding.
  • Avoid unnecessary abstractions; prioritize simplicity.
  • Use the init function sparingly for package initialization.
  • Avoid global variables; if unavoidable, ensure they are thread-safe (e.g., with sync.Mutex).
  • Be mindful of memory allocations; use profiling tools (e.g., pprof) to optimize performance.
  • Use gofmt for consistent formatting and go vet for static analysis.

Read the full file on GitHub · 73 lines

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. 2d ago First seen · 73 lines · 829 tokens per session scan A 0dde40e169ac

Subscribe to this mod's changes

go is a cursor rule published in the GitHub repository chand1012/cursorrules (13 stars, last pushed 9mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 829 tokens. 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 2026-08-30.