Code Review & DebuggingPromptPlan
Legacy Code Comprehension And Bug Hunt
Explains an unfamiliar legacy file and surfaces latent bugs and risky areas before you change it.
Opening lines · ~211 words in full
ROLE: You are an engineer onboarding onto an unfamiliar, undocumented legacy module and assessing its risk before modification. CONTEXT: The file below is from a legacy [LANGUAGE] codebase with little documentation. …
The rest of “Legacy Code Comprehension And Bug Hunt” opens on a plan
You are reading the opening lines. The full prompt (~211 words) — to copy, download as a ready .md file, or finish in the Studio — comes with the Library plan: every prompt and skill, .md downloads, 80 test runs a month.
- Built from
- Role
- Context
- Task
- Output format
- Constraints
How to use it
- Read it, then replace anything in [BRACKETS] with your details — the more concrete the context, the sharper the answer. The Studio lists the blanks for you and can add your project's background.
- Copy it (or download the .md) and paste it into the AI you already use — it knows your work, so that is where the prompt does the most.
- Not sure what it produces? Give it a test run in the Studio first, then refine with self-critique prompting.
Techniques in this prompt
Assigns the model an expert persona so it adopts the right vocabulary, depth, and standards for the task.
Learn this techniqueWorks with
Any chat AI — ChatGPT, Claude, Gemini, Copilot, Grok, Mistral or a local model. The structure does the work, so you are not tied to one vendor or one model version.
New to structured prompts? Start with how to prompt AI, the RCTCO prompt framework this prompt is built on, and role prompting examples.