Summary

A public genealogy corpus with no key, no account and citations that point back at the archive.

Because every result carries a link to the record page, an assistant can build a family tree that is checkable rather than asserted — which is the whole difficulty with genealogy answers from a model. The transcription viewer is the standout: on hosts that support MCP Apps you get the scanned page at deep zoom with its transcript alongside.

What it is

An MCP server generated from the Open Archives OpenAPI specification. It exposes the Dutch genealogy dataset — births, deaths, marriages, censuses — along with per-archive statistics, KNMI historical weather, and full-text transcriptions of scanned documents, and returns links back to the record pages on openarchieven.nl.

What you get

search_records, show_record and match_record — search the record set, open one record, and match a person to their birth and death records
get_births, get_deaths, get_marriages and get_births_years_ago — event-specific lookups, including births from N years ago
get_archives, get_record_stats, get_source_type_stats, get_event_type_stats and get_comment_stats — which archives exist and how many records each holds, by source and event type
get_family_name_stats, get_first_name_stats and get_profession_stats — name and profession frequency across the corpus
get_breakdown — a cross-tabulation grouped by archive, source type, event type, place or year
get_historical_weather and get_census_data — KNMI weather for a date, and Dutch census data from 1795 to 1899
search_transcriptions, browse_transcriptions and show_transcription — full-text search over page transcriptions, hierarchical browsing by archive or inventory, and a single page by id
view_transcription — opens transcribed pages in a deep-zoom IIIF viewer with the transcript beside them, on hosts that render MCP Apps; elsewhere it falls back to a text summary with source URLs

Requirements

Nothing — Open Archives is a public dataset and the hosted endpoint at https://mcp.openarchieven.nl/ takes no authentication. Add it as a custom connector by URL. Self-hosting needs Node.js 18+, npm and optionally Redis for caching; the upstream API allows 4 requests per second per IP, and the server queues calls through a rate limiter to stay under it.