# com.babyagecalculator/baby-age

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

- name: com.babyagecalculator/baby-age
- version: 1.0.0
- connection class: R0 (autonomous)
- trust: 97/100
- quality: 79/100 (good)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/com.babyagecalculator%2Fbaby-age
- tools: https://api.protogrid.dev/v1/servers/com.babyagecalculator%2Fbaby-age/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

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


## Trust

- hygiene: 100
- liveness: 99
- freshness: 85
- provenance: 100
- drivers: +repository +namespace-matches-repo +dns-namespace +website +reachable +uptime-96% ~updated-86d-ago
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 79/100 (good)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 71 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- fail `tools.annotations`: no tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: get_zodiac_sign (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_birthstone (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_milestone_dates (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …
- pass `tools.token_cost`: about 528 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 100 (weight 15)

- pass `stability.changes`: 2 tool changes in 30 days
- pass `stability.rug_pull`: no tool changed its meaning under the same name

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 5, about 528 tokens to load them all
- tool set hash: 361c67904987f9c1a375f8b3362ec2ac
- tools last changed: 2026-10-15T12:34:13.620Z
- badge: [![protogrid quality](https://protogrid.dev/badge/com.babyagecalculator/baby-age.svg)](https://protogrid.dev/servers/com.babyagecalculator/baby-age)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-10-15 `get_birthstone` added
  - 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.
- 2026-10-15 `get_baby_age` changed (description)
  - before: Get a baby's exact age from a birth date - years, months, weeks, days, totals, zodiac sign, 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.
  - after: 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.

Full history: https://api.protogrid.dev/v1/servers/com.babyagecalculator%2Fbaby-age/changes

## Remotes

- https://babyagecalculator.com/api/mcp/ (streamable-http, auth none, reachable true, uptime30d 0.9649123)

## Packages

_none_

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