Prompt Builders

Prompt Template Builder

Build reusable prompt templates with {{variable}} placeholders. Add and reorder variables, fill sample values, and export as Standard, Markdown, XML, JSON, or Structured Sections.

Use {{variable_name}} placeholders for the parts that change. Variable names accept letters, numbers, and underscores.

Variables

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How it works

Write your prompt template in the Template Editor using {{variableName}} placeholders for the parts that change. The tool detects every variable, lists them below the editor, and generates an input field for each one. Fill in the sample values, click Build Template, and the preview shows your fully filled prompt. Copy the filled version, export the raw template with empty variables as JSON, or download a Markdown doc.

Best for

  • Reusing one prompt structure with different inputs each time
  • Building a prompt your team fills in, with a live preview of the result
  • Exporting a template as Markdown, XML, JSON, or structured text

Not for

  • Writing a single prompt you will not reuse — skip the variables
  • Detecting which values in an existing prompt should become variables — that is the Prompt Variable Builder

Use cases

  • Building a reusable PR review prompt that every engineer on the team can fill in consistently
  • Creating a client-facing content brief template where the writer fills in keyword and audience
  • Standardizing agent task prompts across an automation workflow with named variable slots
  • Turning a one-off prompt that worked well into a reusable template for the whole team

Pro tips

  • Variable names work best when they describe the type of content, not the position — {{audience}} is more reusable than {{field2}}.
  • Fill in realistic sample values before generating the preview. Placeholder text like 'example' will make the preview harder to evaluate.
  • Use the Variables JSON export to build a form or integration that populates the template programmatically.
  • Templates with 5–8 variables tend to be the most reusable — fewer variables are too rigid, more variables become hard to fill consistently.

FAQ

What variable format does the tool support?

Variables use double curly braces: {{variableName}}. Names can contain letters, numbers, and underscores — no spaces or hyphens. Examples: {{topic}}, {{target_audience}}, {{outputFormat}}.

Does it work with any AI model?

Yes — a filled template is just text, so it works with ChatGPT, Claude, Gemini, or any model. Export the raw template as JSON to reuse the structure, or download a Markdown doc to share it with your team.

What happens if I leave a sample value empty?

If a variable has no sample value, its placeholder is preserved in the preview output — the preview will show {{variableName}} for any unfilled variable.

What is the Variables JSON export for?

Variables JSON exports your template's variable names as a JSON object with empty string values. Use it to build a form, script, or API integration that populates the template programmatically.

What is the Markdown Documentation export?

The Markdown export produces a structured document containing your template, variable list, and a filled example. Useful for sharing templates in documentation, GitHub wikis, or team knowledge bases.