As a Ruby developer with over a decade of experience, I’m always on the lookout for tools that can improve my workflow. Recently, I’ve been using Opencode—an AI-powered coding assistant—and it has significantly changed how I approach development tasks.

What is Opencode?

Opencode is an interactive CLI tool that helps with software engineering tasks. Unlike traditional AI chat interfaces, it operates directly in your terminal, understands your codebase context, and can execute commands, modify files, and automate repetitive tasks.

How I Use It

1. Rapid Prototyping

When I need to quickly scaffold a new feature or explore an idea, Opencode helps me:

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# I describe what I want, and it helps generate the structure
class PaymentProcessor
  def initialize(gateway)
    @gateway = gateway
  end
  
  def process(amount, currency)
    # Implementation details...
  end
end

2. Refactoring Legacy Code

Working with older codebases often means dealing with technical debt. Opencode helps identify patterns and suggests refactoring approaches:

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# Before: Complex nested conditionals
if user&.active?
  if user.subscription&.valid?
    if user.permissions.include?(:admin)
      # Do something
    end
  end
end

# After: Extracted into methods with guard clauses
return unless user&.active?
return unless user.subscription&.valid?
return unless user.admin?

# Do something

3. Writing Tests

Test-driven development becomes more efficient when you have an assistant that can:

  • Generate test scaffolding based on implementation
  • Suggest edge cases you might have missed
  • Help maintain test coverage
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RSpec.describe PaymentProcessor do
  let(:gateway) { instance_double(PaymentGateway) }
  subject(:processor) { described_class.new(gateway) }
  
  describe '#process' do
    context 'with valid payment' do
      it 'charges the gateway' do
        expect(gateway).to receive(:charge).with(100, 'USD')
        processor.process(100, 'USD')
      end
    end
    
    context 'with invalid amount' do
      it 'raises PaymentError' do
        expect { processor.process(-10, 'USD') }
          .to raise_error(PaymentError, /invalid amount/)
      end
    end
  end
end

4. Documentation and Code Review

Opencode helps maintain consistent documentation and can act as a first-pass code reviewer:

  • Checking for adherence to style guides
  • Identifying potential bugs or anti-patterns
  • Suggesting better variable names and method structures

Key Benefits

Context Awareness

Unlike generic AI tools, Opencode understands your project structure, existing code patterns, and can work within your established conventions.

Terminal Integration

Being CLI-native means:

  • No context switching between IDE and browser
  • Direct file manipulation
  • Ability to run tests and commands immediately

Iterative Workflow

The tool supports an iterative approach:

  1. Describe the task
  2. Review the proposed solution
  3. Refine and adjust
  4. Execute with confidence

Real-World Example: Redesigning This Site

Recently, I used Opencode to completely redesign this Jekyll-based site. The process involved:

  1. Brainstorming the layout and design approach
  2. Creating implementation plans with step-by-step tasks
  3. Generating custom layouts and SCSS styles
  4. Setting up Docker for local development
  5. Writing this blog post (meta, right?)

What would have taken days of back-and-forth was completed in a focused session with clear direction and automated execution.

Best Practices I’ve Learned

  1. Start with clear requirements—the better you describe what you want, the better the results
  2. Review incrementally—check work at each step rather than at the end
  3. Maintain control—use it as an assistant, not a replacement for your judgment
  4. Commit frequently—just as you would with any development work

When It’s Most Valuable

  • Exploring new technologies—get up to speed quickly with unfamiliar frameworks
  • Boilerplate reduction—automate repetitive setup tasks
  • Refactoring—identify improvements in existing code
  • Learning—understand different approaches to solving problems

Conclusion

Opencode has become an integral part of my development toolkit. It’s not about replacing developer expertise—it’s about amplifying it. By handling routine tasks and providing intelligent suggestions, it frees up mental space for the complex problem-solving that makes software development interesting.

If you’re a Ruby developer looking to improve your workflow, I encourage you to give it a try. The learning curve is gentle, and the productivity gains are immediate.