Using Claude Code for a Solo Side Project

1. Choose a Small, Concrete Project

Claude Code is most useful when it can work against a real codebase with a clear outcome. Start with a project that can reach a useful first release in a few days or weeks: a personal dashboard, a data importer, a command-line utility, or a small web service. Write down the user, the problem, and the smallest version that solves it.

Create a short project brief before opening Claude Code. Include the expected inputs and outputs, the main constraints, and what you will consider finished. This gives the tool a stable target and helps you reject attractive but unnecessary feature ideas.

2. Prepare the Repository

Create a new Git repository and add a basic README, an ignore file, and the language or framework configuration. Make the first commit before asking an AI coding tool to modify anything. A clean baseline makes it easy to inspect changes, compare alternatives, and recover from a poor implementation.

Also add a short file describing the project conventions. Explain how to run tests, how to start the development server, where application code belongs, and which commands must pass before a change is considered complete. Claude Code can then use the repository's own instructions instead of guessing.

3. Connect Claude Code Through ApiCabin

ApiCabin is an AI API relay for indie developers and small teams. One key provides pay-as-you-go access to multiple supported providers, and the service works with Claude Code, Codex, Gemini CLI, and OpenAI-compatible SDKs. Its API address is https://api.apicabin.ai.

Sign up at ApiCabin, create an API key, and follow the current Claude Code configuration instructions in your account. In a shell session, the setup typically involves assigning your key to the provider's API-key environment variable and configuring the API base URL to use https://api.apicabin.ai. Keep the key in your local environment or a secret manager; do not commit it to the repository.

Choose a model that matches the task. For example, you might use Claude Sonnet 5.5 for general implementation work and Gemini 3.1 Pro for a second opinion on a difficult design or debugging problem. Check ApiCabin's current model and compatibility settings because available options and configuration details can change.

4. Start With Repository Discovery

Open Claude Code from the project directory and begin with questions rather than a large implementation request. Ask it to inspect the repository, summarize the current architecture, identify the available test commands, and list any risks it sees. Review that summary yourself. Correct assumptions before they become code.

Next, ask for a concise implementation plan. A good plan names the files likely to change, the data flow, the tests required, and any decisions that need your approval. Keep the plan small enough to review in one sitting.

5. Implement One Vertical Slice

Ask Claude Code to build one complete path through the application, such as receiving a request, validating it, storing the result, and displaying a useful response. A vertical slice exposes integration problems earlier than building every screen or module separately.

Give the tool explicit boundaries: do not add dependencies without explaining why, preserve existing public behavior, and stop when tests fail for an unrelated reason. After each meaningful change, inspect the diff and run the relevant checks. You remain responsible for design decisions, security, and accepting the code.

6. Use Tests as the Working Contract

Ask Claude Code to create tests before or alongside behavior that has clear rules. Focus on validation, error handling, permissions, persistence, and boundary cases. Then ask it to run the test suite and explain failures in plain language.

When a test fails, provide the exact output and ask for a diagnosis before requesting a fix. This reduces random edits and keeps the debugging process understandable. Add a regression test whenever you discover a bug that could return later.

7. Control Scope and Spending

Solo projects often lose momentum through uncontrolled expansion. Keep a short backlog with three categories: essential for release, useful later, and deliberately excluded. Ask Claude Code to work only on the current item and to flag requests that expand scope.

Because ApiCabin uses pay-as-you-go access, monitor usage while you work. Use smaller requests for repository navigation and formatting, reserve stronger reasoning for architecture or difficult defects, and avoid repeatedly sending the entire codebase when a focused file or error message is enough.

8. Review, Release, and Learn

Before release, ask Claude Code for a review focused on security, missing tests, failure modes, and operational risks. Read the result critically, run the complete test suite, and test the main user journey manually. Then update the README with setup steps, configuration requirements, limitations, and a short release note.

After shipping, record which prompts, project instructions, and review practices produced reliable results. Invite friends to try the project and, if they pay through your ApiCabin referral, residents can earn a referral reward. Treat that as an optional benefit; the main goal is a repeatable workflow that helps you turn a focused idea into a maintained product.