"An overview of knowledge graphs" matching MCP connectors:

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

Hosted MCP server for solar vitamin D. Six public tools, no account needed: find a city, sun times and golden hour, the synthesis window for a day, the whole year of viable months at a latitude, whether right now is a good moment from live UV, and what a sun session produced. Four more read a signed-in user profile, cities and sun history over OAuth 2.1. Built on NOAA solar geometry, a Madronich clear-sky UV model with ozone, MED by Fitzpatrick skin type, and live Open-Meteo data.

Read-only senior-care exit routes, duplicate-referral deadlines, and templates; no PII or sending.

Query an independent, payment-blind reference of 1,682 dermacosmetic products — by product, ingredient, concern, category or brand. Neutral descriptive facts, every result links back to its reference page. No ratings, no paid placement.

Neutral, payment-blind reference of 1,682 dermacosmetic products: lookup, search, alternatives.

A free one-minute reset for people, delivered by AI, with no account or personal data.

Non-diagnostic child-development knowledge by Pinnacle Blooms: search, milestones, ICF crosswalk.

Noise data tools: city noise rankings, decibel levels of common sounds, NIOSH safe-exposure math.

Skincare Question and Answer with cited products, ingredients, sources, and comparison context.

Nestling is an MCP server that lets you log and query your baby's daily routine (feeds, sleep, nappy changes, and diary entries) through natural conversation with Claude or any MCP-compatible AI assistant.

Semantic search over a 200-chunk ACLM lifestyle medicine knowledge base.

Fuses biometric signals into a stress score (0-100) for AI adaptation. MCP + A2A native.

Book appointments with Dr. Maggie Geller OD (Vancouver optometrist; myopia, dry eye, contacts).

Search, compare, and purchase La Luer microcurrent facial devices and skincare products.

Disease Twin — Brazil's rare-disease knowledge graph (10,468) over MCP. Source-grounded, PT-BR.

Plug Sally AI into your agent. The clinical-grade health intelligence behind A1C Insights, Sally AI, now exposed as an MCP endpoint and REST API to your agent — 64+ biomarkers across Western clinical and TCM preventive frameworks. Authenticate, call the skills you need, get billed per request. Built for agents who care about health and evidence.

Garmin data in Claude & ChatGPT via the Garmin Health API. OAuth sign-in, no password sharing.

Condition-aware ingredient & product safety intelligence for agents: verdict + evidence tier + per-claim evidence_state (cited = ≥1 verified citation / referenced = sourced-but-unverified) + citations, across breastfeeding, pregnancy, histamine/MCAS, rosacea, HS, allergy, fertility, and toddler lenses. Includes validate_claim to fact-check a free-text health claim against curated cited sources.

Condition-aware ingredient and product checks for agents, with evidence tiers and citations.

GTA doctor, specialist, clinic, language, availability, and freshness data through REST and MCP.