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Open Archives MCP server

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by coret·io.github.coret/openarchieven-mcp-server·v1.1.1·4 stars
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MCP server for Open Archives: Dutch genealogical records and historical page transcriptions.

A87/100grade A
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Safety scan
A87/100

full report

Adoption
Growing

4 stars

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Open Archives tools (22)

write = sends, deletes, buys or posts
  • browse_transcriptionsFree

    Browse transcriptions hierarchically Returns a hierarchical browse of available page transcriptions. Mirrors `/transcripties/lijst/`. Three modes, depending on the supplied filters: * No filter — top-level list of source archives ordered by total transcription count (descending). * `archive_code` — list of all archive numbers (archieftoegangen) within that archive, ordered by archive number. * `archive_code` + `archive_number` — list of all inventories within that archive number, ordered by inventory number. The order of items is fixed and cannot be overridden. Results are always returned in full (no paging).

  • get_archivesFree

    List all archives with statistics Returns an array of all participating archives including their archive code (used in other API calls), name, homepage URL, Twitter handle, ISIL code and search URL on Open Archives. Note: version 1.1 adds ISIL codes and removes defunct ArchiefWiki links.

  • get_birthsFree

    Finds birth records

  • get_births_years_agoFree

    List births that occurred a specified number of years ago Returns a list of birth records for people born exactly the specified number of years ago from today. Note: version 1.1 uses `archive_code` instead of `archive` and includes the archive name and record URL.

  • get_breakdownFree

    Cross-tabulation aggregation grouped by one dimension Returns record counts filtered by any combination of archive, source type, event type, event place and year range, grouped by ONE chosen dimension (archive, sourcetype, eventtype, place or year). Use this endpoint to answer questions such as "how many Bidprentjes per archive?" or "how many marriages per year in Amsterdam?". The response includes the total filtered record count, the total number of distinct groups (capped at 750) and the top-N groups according to the chosen sort.

  • get_census_dataFree

    Dutch census data for a place and year Retrieves census data for a Dutch place or municipality for the census year nearest to the specified year. Available census years: 1795, 1830, 1840, 1849, 1859, 1869, 1879, 1889, 1899. Data sources: Volkstellingen.nl (DANS) and Gemeentegeschiedenis.nl. Either `place` or `gg_uri` must be provided.

  • get_comment_statsFree

    Comment count statistics Returns the total number of validated comments made on records. When no archive_code is provided, the global total is returned. When an archive code is provided, the count for that archive is returned. Note: version 1.1 uses `archive_code` instead of `archive`.

  • get_deathsFree

    Finds death records

  • get_event_type_statsFree

    Record count statistics per event type Returns statistics about event types. Without an archive_code all event types across the entire dataset are returned with total counts. With an archive_code, only event types for that archive are returned. Note: version 1.1 uses `archive_code` instead of `archive`.

  • get_family_name_statsFree

    Family name frequency statistics Returns the number of times family names appear in events for the selected source types, place and period. Results are ordered by frequency. Open Archives uses this endpoint to power its family name frequency visualisation.

  • get_first_name_statsFree

    First name frequency statistics for a given place and year Returns the top-X list of first names in the specified place and year. When a person has multiple forenames, only the first is counted. Currently only Amsterdam is available as a place.

  • get_historical_weatherFree

    Historical weather measurements for a date and location Returns historical weather measurements from the nearest Dutch weather station for the specified date and coordinates. Data sources are the Royal Netherlands Meteorological Institute (KNMI): measurements 1701–1905 and 1901–2014. Note: this endpoint exposes several types of historical datasets, so measurement types and units can vary between records.

  • get_marriagesFree

    Finds marriage records of couples (bride or groom)

  • get_profession_statsFree

    Profession frequency statistics Returns the number of times professions appear in records for the selected period and place. Results are ordered by frequency. Open Archives uses this endpoint to power its profession frequency visualisation.

  • get_record_statsFree

    Record count statistics per archive Returns record count statistics. When no archive is specified, all archives are listed with their total number of records. When an archive code is specified, the source types available for that archive are returned with their individual record counts. Note: version 1.1 uses `archive_code` instead of `archive`.

  • get_source_type_statsFree

    Record count statistics per source type Returns statistics about source types. Without an archive_code all source types across the entire dataset are returned with total record counts. With an archive_code, only source types for that archive are returned. Note: version 1.1 uses `archive_code` instead of `archive`.

  • match_recordFree

    Match a person to birth and death records Searches the genealogical dataset by exact name and birth year and returns the Open Archives URIs of birth records, death records and registrations in which the person is mentioned.

  • search_recordsFree

    Search genealogical records Searches the genealogical dataset and returns found persons and records. Supports filtering by archive, source type, event place, birth place, relation type and country. Results are pageable and sortable. Note: version 1.1 uses `archive_code` instead of `archive`.

  • search_transcriptionsFree

    Full-text search across page transcriptions Performs a full-text search across the page transcriptions of historical documents indexed by Open Archives. Mirrors the search UI at `/transcripties/zoek.php`. Results are ordered by Elasticsearch relevance (the order is fixed and cannot be overridden) and are returned paginated. Each match includes a source citation, page identifier and up to five highlighted text fragments. The set of facets returned depends on the supplied filters.

  • show_recordFree

    Show a single genealogical record Returns one specific genealogical record in JSON format (UTF-8). The response conforms to the Archive 2 All (A2A) model. Also available as XML, GEDCOM, Turtle (TTL) and N-Triples (NT) by changing the file extension in the URL. Note: version 1.1 features improved JSON/XML output and adds N-Triples and Turtle formats.

  • show_transcriptionFree

    Retrieve a single transcription Returns the full transcript of a single page along with its source citation. Mirrors `/transcripties/toon/<id>`. AI-generated summaries are deliberately not returned by this endpoint.

  • view_transcriptionFree

    Open one or more transcribed document pages in an interactive deep-zoom viewer with the transcription text alongside. Pass page identifiers returned by search_transcriptions / browse_transcriptions (form <ISIL>_<archive>_<page>, e.g. NL-SdmGA_1504889_11). Optionally highlight a term in the transcript. Hosts without MCP Apps support receive a text summary plus inline preview images.

Public scan report

scanner v0.1.9 · 2026-09-24 · same rubric, same numbers if you re-run it

no findings
  • –Code scanremote-only server, no package to scann/a
  • Live reliabilityremote reachable in 783ms20/20
  • Tool poisoning22 tool descriptions checked15/15
  • Auth qualityopen endpoint, read-only tools10/15
  • Maintenancelast push 55 days ago12/15
  • Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10
Overall 87/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Open Archives compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
87/100
higher than 73% of 48,255 servers
Tools
22
the typical server has 7
Tools that change things
0%
typical: 0%. Fewer write tools means less an agent can break
Uptime
100%
of our recent checks; the typical remote server answers 100%
Response time
368 ms
faster than 40% of 30,031 servers
GitHub stars
4
more than 82% of 28,688 servers

What its tools let an agent do: 22 read

Install Open Archives in Claude Code, Cursor or VS Code

claude mcp add --transport http openarchieven-mcp-server https://mcp.openarchieven.nl/
Add to Cursor

What the publisher says

From the Open Archives repository's README, as published. We do not edit it. Read it on GitHub

Open Archives MCP Server

Production-grade hybrid MCP + HTTP + SSE server generated from the Open Archives OpenAPI specification. Covers genealogical records (births, deaths, marriages, censuses), archive statistics, historical weather, and full-text page transcriptions of historical documents.

OpenAPI source used to generate tools:

../api/openapi.yaml   (local)
https://api.openarchieven.nl/openapi.yaml   (remote)

Overview

A schema-aware server that automatically converts the OpenAPI specification into callable tools and exposes them through multiple transports:

  • MCP Remote (JSON-RPC over StreamableHTTP)
  • HTTP JSON API
  • SSE streaming with auto-pagination
  • Chunked HTTP streaming with auto-pagination
  • Redis caching (optional)
  • Health checks

Use with Claude

Add as a custom connector

A hosted endpoint is available — no installation required.

In claude.ai or Claude Desktop:

  1. Open Settings → Connectors.
  2. Click Add custom connector.
  3. Enter the URL: https://mcp.openarchieven.nl/
  4. Save and approve when prompted.

No authentication is required — Open Archives is a public dataset.

Example queries

Once the connector is added you can ask Claude, for example:

  • "Who are the ancestors of Johannes Gregorius Marinus Coret? Give me an overview, including source citations in markdown format with the links to the original archives if possible, otherwise provide the Open Archieven links and provide a tree in SVG."
  • "Did Johannes Coret and Antonia Uphus have descendants? Give me an overview, including source citations in markdown format with the links to the original archives if possible, otherwise provide the Open Archieven links, include thumbnails from scans from archival sources if available and provide a tree in SVG."
  • "Provide me with a list of sourcetypes per archive(name) where I can find information about the Coret family. Show the result in a markdown document including links to the search pages on Open Archieven. Instead of the archive code use the ISIL if available."
  • "What was the weather in Amsterdam on 1953-02-01?"
  • "What does the 1850 census say about Utrecht?"

Claude will call the matching tool (searchrecords, showrecord, getmarriages, gethistoricalweather, getcensus_data, …) and return links to the corresponding record pages on https://www.openarchieven.nl.

Self-hosted

The server speaks MCP over Streamable HTTP; there is no stdio distribution. To run your own instance:

git clone https://github.com/coret/openarchieven-mcp-server.git
cd openarchieven-mcp-server
npm install
npm run generate      # builds generated/tools.json from openapi.yaml
npm run build:viewer  # builds dist/viewer.html (the MCP App)
npm start             # listens on http://localhost:3001/

Point your MCP client at http://localhost:3001/ (or your own public URL) the same way as the hosted endpoint above.

Core Features

OpenAPI Auto-Generation

Every API operation becomes a tool automatically via generate.ts.

All 21 operations:

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

Open Archives: common questions

Is Open Archives MCP server safe?
Yes, by our scan: it is graded A (87/100). Read the Open Archives safety report
How do I install Open Archives?
It runs remotely at mcp.openarchieven.nl. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
Does Open Archives need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Open Archives maintained?
The last commit was 96 days ago (2026-07-31). The latest release is v1.1.1.
Is Open Archives up?
100% of our last 28 checks got an answer. We check remote servers about four times a day.
How does Open Archives compare with other MCP servers?
safety score 87/100 (higher than 73% of 48,255 servers); tools 22 (the typical server has 7); tools that change things 0% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.