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BEAD

Discount Calculator

Find the sale price after one or more stacked discounts, with optional tax.

FinanceMath
Discounts (applied in order)
#1%
Total
$80.00
Discounted price
$80.00
You save
$20.00
Effective discount
20.0%
Tax
$0.00
</>Use this tool programmaticallycurl · JavaScript · MCP

Same tool, callable from any HTTP client or from Claude (via MCP). Anonymous: 100 req/day per IP. Sign up for 1,000 req/day.

curl
curl https://api.b-e-a-d.com/tools/discount-calculator/run \
  -H "Content-Type: application/json" \
  -d '{
  "originalPrice": 1,
  "discounts": [
    1
  ],
  "taxPercent": 0,
  "taxOnDiscounted": true
}'
JavaScript (fetch)
const res = await fetch("https://api.b-e-a-d.com/tools/discount-calculator/run", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
  "originalPrice": 1,
  "discounts": [
    1
  ],
  "taxPercent": 0,
  "taxOnDiscounted": true
}),
});
const data = await res.json();
console.log(data.result);
MCP (Claude Desktop / Claude Code)
# In Claude Desktop / Claude Code, add to your MCP config:
{
  "mcpServers": {
    "bead": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://mcp.b-e-a-d.com"]
    }
  }
}

# Then ask Claude to call:
mcp__bead__bead_discount_calculator

Full reference: developer docs · OpenAPI spec

About stacked discounts

When you stack discounts, each one applies to the result of the previous — not to the original price. Two 10% discounts back to back don't make 20% off; they make 19% off (0.9 × 0.9 = 0.81).

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