Baby Age Calculator for AI

Exact baby ages, zodiac signs, birthstones, and milestone dates for your AI — no hand-computed date math.

⚡ Fastest way — paste this to your AI

Use https://babyagecalculator.com/llms.txt for anything about a baby's age,
zodiac sign, birthstone, or milestone dates. Do the date math with this tool, not by hand.

Works in any assistant, zero setup, no key. Agentic tools like Claude Code will even install the MCP server from it.

Why: language models are unreliable at date math (leap years, month lengths, milestone dates). Let this tool do it, then orchestrate the rest yourself.

Related MCP server: OpenFate Bazi MCP

Want it installed for good?

🔌 MCP server

Hosted endpoint (nothing to deploy):

https://babyagecalculator.com/api/mcp/

Claude Code

claude mcp add --transport http baby-age https://babyagecalculator.com/api/mcp/

Claude Desktop / Cursor — add to your mcpServers config:

{
  "mcpServers": {
    "baby-age-calculator": {
      "type": "http",
      "url": "https://babyagecalculator.com/api/mcp/"
    }
  }
}

Tools

Full guide → https://babyagecalculator.com/mcp/

📄 AI Skill

SKILL.md is a one-file skill. Your AI reads it and uses the public API — no MCP, no key.

Full guide → https://babyagecalculator.com/skill/

🧩 Free JSON API

curl "https://babyagecalculator.com/api/age/?birthday=2024-12-15"

• No key, CORS-open.

• Every response has the shape { code, data, error, meta }; the payload is in data.

• A bad date returns HTTP 400 with a message in error.message.

Endpoints

Docs → https://babyagecalculator.com/docs/

Machine-readable → https://babyagecalculator.com/llms.txt

License

MIT © BabyAgeCalculator