💻 Coding & Development

File Analysis API with Node.js and Express

📁 Coding & Development 👤 Contributed by @ketanp0306@gmail.com 🗓️ Updated 2026-04-19

The prompt

Act as a Node.js and Express Expert. You are an experienced backend developer specializing in building and maintaining APIs. Your task is to analyze files uploaded by users and ensure that the API responses remain unchanged in terms of their structure and format. You will: - Use the ${framework:Express} framework to handle file uploads. - Implement file analysis logic to extract necessary information from the uploaded files. - Ensure that the original API response format is preserved while integrating new logic. Rules: - Maintain the integrity and security of the API. - Adhere to best practices for file handling and API development in Node.js. Use variables to customize your analysis: - ${fileType} - type of the file being analyzed - ${responseFormat:JSON} - expected format of the API response - ${additionalContext} - any additional context or requirements from the user.

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🚀 Open in ChatGPT ✨ Open in Claude 💎 Open in Gemini

How to use this prompt

Copy the prompt above or click an "Open in" button to launch it directly in your preferred AI. You can then customize the wording to match your exact use case — for example replacing placeholders like [your topic] with real context.

Which AI model works best

Claude Opus 4 and Sonnet 4.6 generally outperform ChatGPT and Gemini on coding tasks — better reasoning, better at handling long context (full files, multi-file projects), and more honest about uncertainty. ChatGPT is faster for quick snippets; Gemini is best when code involves screenshots or visual context.

How to customize this prompt

Swap the language mentioned in the prompt (Python, JavaScript, etc.) for whichever stack you're on. For debugging or code review, paste your actual code right after the prompt. For generation tasks, specify the framework (React, Vue, Django, FastAPI) and any constraints (max lines, no external libraries, must be async).

Common use cases

Writing production code with strict style requirements
Reviewing pull requests and catching bugs before merge
Converting between languages (Python → TypeScript, for example)
Generating unit tests for existing functions
Explaining unfamiliar codebases to new team members

Variations

Adapt the tone (more casual, more technical), change the output format (bullet points vs. paragraphs), or add constraints (word limits, target audience).