Why it matters

Code agents productive; also risky. Understanding shapes design.

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The architecture

Task input.

Plan code changes.

Apply diffs.

Run tests.

Iterate.

Code agent loopTaskuser promptGenerate + applydiffs / filesVerifycompile + testVerification loop critical; tests + linters + compile keep agent grounded
Code agent.
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How it works end to end

Tools: read/write file, compile (javac / gradle), run tests.

Iterate on failures.

Human review gates.