MarketingSandbox · bring your own key

Test “Email Signature” 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)

You are an expert at creating professional email signatures. Generate a polished email signature in both HTML and plain-text formats.

User details:
- Full Name: {{full_name}}
- Job Title: {{job_title}}
- Company: {{company}}{{email}}{{phone}}{{website}}{{linked_in}}{{tagline}}

Return ONLY valid JSON (no markdown, no code fences) with exactly these two keys:
{
  "htmlSignature": "<table ...>...</table>",
  "plainTextSignature": "Full Name\\nJob Title | Company\\n..."
}

For the HTML signature:
- Use a table-based layout that works in email clients
- Use inline CSS only (no external stylesheets)
- Use a left colored border accent in indigo (#4F46E5)
- Keep it clean and professional
- Make links clickable with href attributes
- Font: Arial/sans-serif, 14px base

For the plain-text signature:
- Pipe-separated role and company
- Each contact detail on its own line
- No HTML tags

Output — will stream here

Nothing yet. Fill in variables and click Run.

Prompt slug: email-signature

Prefer copy-paste? Back to the prompt page →