Baby Age

com.babyagecalculatorPublished by babyagecalculator.comOfficial publisherv1.0.0Updated Nov 2, 2026

Free hosted MCP server by Baby Age Calculator: exact baby age, zodiac, and milestone dates. No key.

VerifiedStreamable HTTPWeb executableLocation & LifestyleProductivity & Workflow

Overview

AI-generated overview

Hosted MCP server that computes a baby's exact age, zodiac sign, birthstone and 25 milestone dates from a birth date, with no API key.

What you can do
  • Compute a baby's exact age from a birth date, including totals, zodiac sign, birthstone, current and next milestone, and special days.
  • List the 25 supported milestone types, or turn them into real calendar dates with days left and reached status.
  • Look up the Western zodiac sign for a date, with element, nickname and date range.
  • Retrieve the full birthstone guide for a birth month, including stones, colors, meanings and keepsake ideas.
When to use it
Useful when an assistant has to answer questions about a baby's age, milestones, zodiac sign or birthstone and should not do the date math itself, since models handle leap years and month lengths unreliably. Suited to parenting, keepsake and calendar-planning conversations.
Requirements
A remote streamable HTTP endpoint; nothing to install locally. No account, API key, environment variable or header is declared.
Before you install
Birth dates are sent to a third-party hosted service, so consider whether that personal data is appropriate to share. The birthstone tool returns a safety note that the server asks to be passed on with keepsake ideas.

Installation

In SourceWeft

  1. Open Baby Age in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/com.babyagecalculator%2Fbaby-age/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

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

README

Baby Age Calculator for AI

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

[License: MIT] [No key] [Website]

⚡ 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.

Want it installed for good?

Best forSetup
🔌 MCP serverClaude Code, Claude Desktop, Cursorone line / one config block
📄 AI Skillany assistant, no MCPdrop in one file
🧩 JSON APIyour own app or agentGET a URL

🔌 MCP server

Hosted endpoint (nothing to deploy):

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

Claude Code

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

Claude Desktop / Cursor — add to your mcpServers config:

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

Tools

ToolReturns
get_baby_age(birthday)exact age, zodiac, birthstone, current/next milestone, special days
get_milestone_dates(birthday)all 25 milestones as calendar dates
list_milestones()the 25 milestone types
get_zodiac_sign(birthday)the zodiac sign
get_birthstone(birthday)the full birthstone guide for the birth month

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

sh
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

EndpointReturns
GET /api/age/?birthday=YYYY-MM-DDage, zodiac, birthstone, milestones, special days
GET /api/milestones/all 25 milestone types
GET /api/zodiac/all 12 zodiac signs
GET /api/birthstones/all 12 months with their stones
GET /api/birthstones/{month}/the full birthstone guide for one month

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

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

License

MIT © BabyAgeCalculator

Source: README.md at commit fb6df84

Tools

5

get_baby_age

Get a baby's exact age from a birth date - years, months, weeks, days, totals, zodiac sign, birthstone, the current and next milestone, and special-day dates (100 days, first birthday, 1000 days). Use for any 'how old is the baby' question instead of computing it yourself.

Parametersbirthdayrequired

get_milestone_dates

Get the exact calendar date of all 25 baby milestones for a given birth date (monthly, special days, and birthdays), each with days_left and whether it is reached. Use this to add baby milestones to a calendar.

Parametersbirthdayrequired

list_milestones

List the 25 baby milestone types this tool knows (name, emoji, day offset from birth, group). No birth date needed. Use get_milestone_dates to turn these into real dates.

Takes no parameters.

get_zodiac_sign

Get the zodiac sign (Western astrology) for a birth date, with element, nickname, date range, and a guide link.

Parametersbirthdayrequired

get_birthstone

Get the full birthstone guide for a birth date's month: every stone (some months have three) with colors, hardness, sources and story, plus meaning for the baby, keepsake ideas, a safety note, the month's zodiac signs, quick answers, and a guide link. Always pass on the safety note with keepsake ideas.

Parametersbirthdayrequired

Version history

1
  1. v1.0.0LatestSep 16, 2026

Score

100% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts