golang-pro

Use when building Go applications requiring concurrent programming, microservices architecture, or high-performance systems. Invoke for goroutines, channels, Go generics, gRPC integration.

Install with Tessl CLI

npx tessl i github:Jeffallan/claude-skills --skill golang-pro

What are skills?

Review — 64%

Does it follow best practices?

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npx tessl skill review --optimize ./path/to/skill

Learn more

Validation — 11 / 11 Passed

Validation for skill structure

SKILL.md

Review

Evals

Evaluation results

100%

14%

Log Ingestion Pipeline

Goroutine lifecycle and context propagation

Criteria

Without context

With context

Context parameter

100%

select + ctx.Done()

100%

WaitGroup lifecycle

90%

100%

Bounded concurrency

100%

Error wrapping

62%

100%

No ignored errors

100%

No panic for errors

100%

Table-driven tests

70%

100%

Cancellation test case

100%

Concurrency pattern documented

100%

Race detector flag

100%

Without context: $0.4345 · 2m 10s · 16 turns · 17 in / 7,041 out tokens

With context: $1.2115 · 4m 15s · 37 turns · 84 in / 13,832 out tokens

76%

Type-Safe Utility Collections

Go generics and interface design

Criteria

Without context

With context

Union type constraints

100%

Approximate tilde constraint

100%

Compile-time interface check

Accept interfaces

Return structs

100%

75%

Interface segregation

62%

50%

Exported docs

100%

Table-driven tests

100%

Comparable constraint usage

100%

No reflection

100%

No ignored errors

100%

Without context: $0.3281 · 1m 45s · 12 turns · 11 in / 5,987 out tokens

With context: $0.8043 · 3m 13s · 28 turns · 75 in / 12,145 out tokens

100%

HTTP Service Scaffold

Functional options and project structure

Criteria

Without context

With context

Functional options type

90%

100%

WithXxx option constructors

100%

No hardcoded config values

90%

100%

Env var config

100%

cmd/ directory

100%

internal/ package

100%

Rate limiter import

100%

Limiter.Wait call

100%

Context in blocking ops

100%

Exported symbol docs

100%

Pattern explanation

100%

Without context: $0.4964 · 2m 39s · 19 turns · 19 in / 7,809 out tokens

With context: $0.8204 · 3m 10s · 32 turns · 33 in / 8,426 out tokens

Evaluated: 1 day ago
Agent: Claude Code

Table of Contents

Log Ingestion Pipeline Type-Safe Utility Collections HTTP Service Scaffold

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