MarketingSandbox · bring your own key

Test “Welcome Email” with your own key

Paste an Anthropic, OpenAI, or OpenRouter key. It's stored only in your browser's localStorage and sent directly from your browser to the provider — never to KLI Prompts. We have no backend that can see it.

How this works (honestly)

  • Your key lives in localStorage on this device only.
  • The HTTP request to the LLM goes from your browser straight to api.anthropic.com / api.openai.com / openrouter.ai.
  • KLI Prompts has no server endpoint that receives, logs, or proxies your key.
  • Clear it any time — there's a button below.

Step 1 · Provider

Recommended for this prompt: any · temperature 0.4

Step 2 · Your API key

Saved to localStorage on this device. Never sent to KLI servers.

Step 3 · Fill the variables

Final prompt (sent to anthropic)

Write a welcome/onboarding email for new customers or users.

Company: {{company_name}}
Product: {{product_name}}
Key feature to highlight: {{key_feature}}
Recommended first step: {{next_step}}
Tone: {{tone}}
Support contact: {{support_email}}

Requirements:
- Start with "Subject:" line (include emoji if warm tone)
- Welcome them warmly and briefly
- List 3 clear "first steps" as a numbered list
- Include quick links section (use placeholder text like [Getting Started Guide])
- Add a warm personal note about support availability
- P.S. or bonus tip at the end
- Keep it scannable with short paragraphs
- Sign off from {{company_name}} Team
- Under 250 words body

Output ONLY the email, no extra commentary.

Output — will stream here

Nothing yet. Fill in variables and click Run.

Prompt slug: welcome-email

Prefer copy-paste? Back to the prompt page →