AI Tools

Debug AI Prompt Variables
with Visual Flow

See exactly how variables flow through your prompt templates. Catch substitution errors before they reach your users — in real-time.

Get Access — $39/mo

Cancel anytime. Instant access.

prompt_template.txt
You are a helpful assistant for {{company_name}}. The user's name is {{user_name}} and their plan is {{plan_tier}}. Context: {{context}}
plan_tier— undefined variable detected

Pro

$39

/month

  • ✓Monaco Editor with syntax highlighting
  • ✓Real-time variable parsing & validation
  • ✓React Flow dependency graph
  • ✓Substitution error highlighting
  • ✓Unlimited prompt templates
  • ✓Export & share debug sessions
Start Debugging

Frequently Asked Questions

What prompt template formats are supported?

Supports Mustache-style {{variable}}, Jinja2-style {{variable}} and {%block%}, LangChain {variable}, and custom delimiters. The parser auto-detects the format.

How does the visual flow diagram work?

React Flow renders a live dependency graph showing which variables feed into which prompt sections. Broken or missing variables are highlighted in red so you can trace the exact failure point.

Can I use this with my existing AI pipeline?

Yes. Paste any prompt template directly into the editor, define your variable values, and the debugger simulates substitution without touching your production system.