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How to trace untrusted input in a system you are authorized to test with Alphacode

Have AlphaCode trace input to sensitive operations and confirm which findings reproduce.

Authorization notice. Alphacode is dual-use. Only use it on software, sites and systems you own or have explicit permission to test.

Who it is forA security engineer or bug bounty tester with written authorization to assess a specific application.

The problemFollowing untrusted input through a codebase by hand is slow, and unverified findings waste triage time.

The outcomeA list of likely issues, each marked as reproduced or not reproduced in the authorized test environment.

What you need first

  • A terminal on macOS, Linux, or Windows (use Windows Terminal or PowerShell on Windows)
  • A project folder or repository you want the agent to work in
  • Internet access to run the installer
  • Optional: API keys for Claude, GPT, Gemini, or other providers, which may incur charges
  • For browser tasks: Firefox with the AlphaCode Browser Agent extension installed
  • For desktop tasks: a working platform accessibility backend (UI Automation, Accessibility API, or AT-SPI2)

Steps

  1. Confirm in writing that you are authorized to test the target system.
  2. Install AlphaCode with the one-line installer and run alphacode doctor.
  3. Run alphacode in the target repository and give the goal: trace untrusted input to sensitive operations and validate likely findings.
  4. For any finding that needs a live check, use the Firefox browser setup with alphacode browser setup and alphacode browser status.
  5. Keep only findings that were reproduced, and record the steps to reproduce each one.

Prompt for your agent

Use the dragonked2/alphacode repo to trace untrusted input to sensitive operations in <authorized target path>. Report only findings that you reproduced in the authorized test environment, with the reproduction steps. Verify each reported issue by re-running its reproduction once.

Caveat. The README limits security testing to systems you own or are explicitly authorized to assess, and the same workflow could be misused against systems you do not control.

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