Cern Opendata MCP Server

Install

Works with Claude Code, VS Code, Codex, Cursor, Windsurf, Claude Desktop. Read the repository before you give any tool access to your data.

npx agentmarket install connector/cyanheads-cern-opendata-mcp-server

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Permissions

What this server can do and what it asks for, from its tool list and install config. Checked Oct 25, 2026.

Tools

7 read · 0 write · 0 deleteRead-only

Secrets

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Install scripts

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Runs as

Node.js package

Tools (7)

As the server listed them on Oct 25, 2026. Descriptions are the server’s own words; hidden characters are shown as [U+…].

• cern_opendata_get_analysis_envGet CERN Open Data Analysis Environmentread-only

  Assemble what is needed to analyse a record: its container images, CMSSW release and global tag; the condition-data, VM and validated-run records for its run periods; example software that declares it works with the record; and quoted sections of the guides the record links (the first two are fetched). Container images, software and guide code are licensed separately from the CC0 data. Use cern_opendata_list_files for the record's files.

• cern_opendata_get_recordsGet CERN Open Data Recordsread-only

  Fetch full metadata for 1-20 records in one call, by recid, DOI, CMS dataset path (/Primary/Era/TIER) or documentation slug. Returns the description, run periods, collision and distribution details, related records, a software-environment summary, the license and a ready citation, plus what a record states of its variable dictionary, physics category, pile-up, keywords, and LHCb magnet polarity and stripping. Documentation and news pages include their markdown body in slices of at most 30,000 characters; body_offset with that one id reads on from where a slice stops. Each response holds to 64,…

• cern_opendata_get_validated_runsGet CMS Validated Runsread-only

  Get a CMS validated-run (good-run) list, which certifies the luminosity sections that are good for physics in each run. Select it by a CMS collision dataset recid, a validated-run list recid, or a run period such as Run2012B (give exactly one of recid and run_period). Choose the full validation or the muons-only variant, and narrow to a run range; a dataset recid defaults the range to the first and last run the dataset lists. Returns the runs with their luminosity-section ranges and the list file download URL. CMS only.

• cern_opendata_list_filesList CERN Open Data Record Filesread-only

  List one record's files: its file indexes (groups of up to ~1,500 files) with their XRootD URI-list URLs, and per file the XRootD URI, HTTPS download URL, size, adler32 checksum and availability. Without index, returns the record's indexes and its regular files; with index, reads only that index and pages through its files. Files marked on demand sit on tape and must be requested on the record's portal page before download.

• cern_opendata_list_referenceList Reference Vocabularyread-only

  Decode the vocabulary the other cern_opendata tools accept: experiments, record types, collision energies and types, file formats and data tiers, availability states, physics categories, LHCb magnet polarities and stripping streams and versions, identifier forms, query syntax, licensing, and the CMS run periods that have validated-run lists. Static and offline; omit topic for every table.

• cern_opendata_search_recordsSearch CERN Open Data Recordsread-only

  Search the CERN Open Data Portal's datasets, software, environments, documentation and supplementary records with exact-vocabulary filters and an optional full-text query. The filters are experiment, record type, physics category, keyword, collision energy and type, file format, data-taking year, event count, availability, collection, and LHCb magnet polarity, stripping stream and stripping version. Returns compact hits with recids plus live facet counts. Each facet ignores its own filter, so its counts show the alternatives under the other filters. Filter values are exact upstream; common spe…

• cern_opendata_search_trigger_pathsSearch CMS Trigger Pathsread-only

  Look up CMS High-Level Trigger paths by exact name (HLT_IsoMu24) or prefix pattern (HLT_IsoMu*), optionally for one data-taking year. Paths outside the HLT_ family, such as AlCa_EcalPi0, DST_ and DQM_ paths, output modules and HLTriggerFinalPath, are found by their own names, in the case given. Each match is a per-year path record parsed into the primary datasets its title names, the first and last run the path was seen online, per-version run ranges, the L1 seed, and links to the HLT menu records. Covers CMS open data from 2011-2016. Prescale factors are not returned: each HLT menu record hol…

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253

Last commit

Oct 18, 2026 (12 days ago)

Last release

Oct 18, 2026 (12 days ago)

Last package publish

Oct 18, 2026 (12 days ago)

From GitHub (fetched Oct 24, 2026) and the package registry.

Details

Registry name

io.github.cyanheads/cern-opendata-mcp-server

Version

0.2.1

Auth

Auth not stated

Packages

npm @cyanheads/cern-opendata-mcp-servernpm @cyanheads/cern-opendata-mcp-server

License

Apache-2.0

Repository

github.com/cyanheads/cern-opendata-mcp-server

First seen

Oct 24, 2026

Last checked

Oct 24, 2026

Source

Official MCP Registrygithub-graphql