#501 · Developer & Config

AI Prompt Variable Extractor

Long prompts often hide variables in several placeholder styles. Paste a prompt here to collect those fields in one pass. The extractor recognizes common brace, dollar, angle-bracket, and square-bracket forms, keeps the first-seen order, and flags repeated names. It is useful when turning a working prompt into a reusable template or checking what an automation must supply.

Text Input

Browser-only processing
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How to use this text tool

  1. Paste the text you want to inspect or load the sample.
  2. Choose only the options that match your prompt format.
  3. Select Extract Variables or press Ctrl/Cmd + Enter.
  4. Read the summary and detailed output, then copy or download it.

What this tool does

Find reusable variables in an AI prompt, group them by placeholder style, and export a clean inventory for prompt templates and automation workflows.

The scanner uses separate, bounded patterns for each supported placeholder style. Matches are normalized by variable name, while the original spelling and position are retained for review.

Square brackets used as ordinary prose may be reported. Choose a narrower syntax when your prompt contains many bracketed notes.

Example

Load the sample, run the tool, and compare the report with the visible markers or values in the input. The output is deterministic for the selected options, so the same text produces the same report.

Use cases

  • Review a prompt before it enters a shared prompt library.
  • Check generated content before another program consumes it.
  • Create a lightweight audit record without uploading private text.

Tips for better output

  • Keep separators and labels on their own lines.
  • Use the narrowest option that matches your actual format.
  • Test one valid and one deliberately invalid example.
  • Review every warning in the surrounding context.
  • Save the original text alongside important reports.

Processing details

The scanner uses separate, bounded patterns for each supported placeholder style. Matches are normalized by variable name, while the original spelling and position are retained for review. Text remains in the current browser page during processing.

Square brackets used as ordinary prose may be reported. Choose a narrower syntax when your prompt contains many bracketed notes.

Frequently asked questions

Does AI Prompt Variable Extractor send my text to a server?

No. The processing in this page runs in your browser. Uploaded files are read locally by the page.

Can I use the result in a production prompt workflow?

Yes, but review the result first and test it with the exact model, template engine, or schema used by your application.

What happens when the input is empty or malformed?

The tool shows an input error instead of producing a misleading report. Tool-specific parsing errors include a short correction hint.

Can this tool guarantee that an AI response is safe or correct?

No. It checks the visible text using the stated rules. Model behavior, source quality, and application security still require separate review.

Is Unicode text supported?

Yes. The page accepts Unicode text, although pattern matching and token estimates may vary for scripts and formats outside the examples described.

Quick reference

ItemDetails
ProcessingLocal browser JavaScript
InputPlain text or supported structured text
ExportsTXT, JSON, and tabular CSV when available
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