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ONS Baby Names API MCP Server

ONS Baby Names API MCP Server

Official
by ONSdigital
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Python
Hybrid

ONS Baby Names API — MCP Server

An MCP (Model Context Protocol) server that exposes England & Wales baby names data from the ONS birth registration dataset, deployable to Vercel.

Once deployed, you can connect Claude (or any MCP-compatible client) to ask questions like:

  • "What were the top baby names in 2024?"

  • "How has the popularity of Oliver changed over time?"

  • "What names are similar to Olivia for girls?"

  • "Which area had the most babies called Alfie in 2024?"

Tools

Tool

Description

get_meta

Available years and geography years in the dataset

get_names

Full list of registered names (all / boys / girls) with slugs

search_names

Search names by substring

get_year_data

All names and counts for a given year

get_top_names

Ranked top N names for a given year

get_name_data

Full time-series (count + rank per year) for a single name

get_geographic_data

Regional breakdown by local authority area

get_similar_names

Names with similar popularity trajectories

health

Diagnostic check

Related MCP server: satudata-ngawi

Deploy to Vercel

  1. Fork or clone this repo

  2. Import it in Vercel

  3. Deploy — no build configuration needed

The MCP endpoint will be available at:

https://<your-vercel-url>/mcp

Optional environment variable

Variable

Default

Description

BABY_NAMES_BASE_URL

https://baby-names-api.netlify.app

Override the upstream API base URL

Connect to Claude

In Claude's settings, add a new MCP server with the URL:

https://<your-vercel-url>/mcp

Local development

python -m venv .venv
source .venv/bin/activate
pip install -r requirements.txt
python app.py

The server will start on http://localhost:8000/mcp.

Data source

Data is served from baby-names-api.netlify.app, generated from ONS birth registration statistics for England & Wales. Source code: henryjameslau/baby-names-api.

This server cannot be deployed

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Resources

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