Get a working local development environment
This example follows Atlas Catalog, a fictional service, from repository access to a small first change. Use the codebase's approved setup reference for actual tools, commands, and checks; this example is not a universal toolchain.
Check prerequisites first
Resolve access and toolchain questions before installing dependencies or running the project.
Repository access
Confirm that your account can read the intended repository and its setup instructions. If access is denied, ask the repository owner or codebase onboarding contact to verify the appropriate access route.
- Check that you are using the account intended for this codebase.
- Include the repository name and exact denial message when requesting help.
Supported tools
Identify the operating system, runtime, package manager, and versions named in the codebase's authoritative setup reference. Do not substitute a newer version based on assumption.
- Compare installed versions with the documented versions.
- Use only development dependencies approved for this codebase.
Local requirements
Check whether the project documents environment variables, local services, or other prerequisites. Follow the approved instructions for obtaining any required values; do not copy secrets into chat or source control.
- Note which prerequisite is missing before continuing.
- Ask the designated owner if the reference does not explain how to obtain it.
Follow the supported setup sequence
The published codebase instructions are the source of truth; commands and tool choices vary by repository.
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1
Read the setup reference
Read the codebase-specific setup article from prerequisites through the local verification check. Note any operating-system or role-specific differences.
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2
Prepare the documented tool versions
Compare your installed runtime and package manager with the versions in the reference. Resolve a mismatch using approved team guidance before installing dependencies.
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3
Confirm authorized repository access
Verify that you can read the repository and any explicitly documented dependency sources. Route an access denial to the repository owner or onboarding contact.
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4
Install documented dependencies
Run only the dependency setup steps listed for this codebase. If a step fails, capture the exact error instead of trying unrelated commands.
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5
Run the documented local check
Use the check named in the reference and compare its result with the expected outcome stated there. If the expected outcome is missing or differs, ask the codebase owner before treating setup as complete.
Make a small first change
Worked example: Atlas Catalog is fictional. Follow the receiving codebase's own review and test expectations.
Start with a documentation edit
In the fictional Atlas Catalog repository, clarify one sentence in an existing documentation file about what the catalog displays. Inspect the diff to confirm that only the intended text changed, then run the documentation check named in that repository's setup reference.
- Keep the edit in the existing documentation file.
- Check the diff for unrelated changes.
- Ask the code owner which review route applies before submitting.
Treat behavior changes differently
Changing application behavior is not equivalent to the documentation example. Before editing behavior, identify the relevant test, expected review route, and codebase-specific contribution guidance with the code owner.
- Do not infer test coverage or approval expectations from the documentation example.
- Describe the intended behavior change and ask which checks apply.
Troubleshoot common setup problems
When asking for help, include the repository, operating system, documented and installed tool versions, the step you reached, and the exact error. Remove credentials, tokens, and other secrets.
Repository access is denied. What should I send?
Check that you are signed in with the account intended for the codebase. Then contact the repository owner or onboarding contact through your organization's established help route. Include the repository name, the action you attempted, and the exact denial message; do not include credentials.
My installed tool version differs from the reference. Which should I use?
Pause before installing dependencies. Compare the documented requirement with your installed version and ask the codebase owner how to resolve the mismatch if the reference does not state an approved option. Do not assume a newer version is compatible.
Dependency installation failed. What context is useful?
Record the setup step, operating system, documented tool versions, and exact error text. Check whether the reference names a prerequisite for that step. Share this context through the codebase's established help route, removing secrets and private environment values.
The local check differs from the reference. Is setup complete?
Do not assume the difference is harmless. Capture the check you ran and its output, confirm you followed the documented tool versions, and ask the codebase owner to interpret the mismatch before proceeding with code changes.
Who owns the setup instructions, and when should they be checked?
The codebase owner is accountable for the repository-specific setup reference; the onboarding contact can route access or orientation questions. The owner should review the reference when supported tools, repository setup, or local checks change, and when an engineer reports a reproducible mismatch.