CERN Open Data Datasets Browser
cernopendata.datasets.browseRead-onlyIdempotent
Browse and filter CERN Open Data datasets by experiment, publication year, collision energy, and keyword to find specific NanoAOD, MiniAOD, simulation, or collision samples.
Instructions
Browse and filter CERN Open Data collision and simulated datasets by experiment, publication year, collision energy, and keyword. Returns only records of type Dataset (66,000+ datasets). Useful for finding specific NanoAOD or MiniAOD simulation samples, real collision data, or derived datasets for a given LHC run period. LHC Run 1 data: 2010–2012 at 7–8 TeV; Run 2 data: 2015–2016 at 13 TeV. Experiments: CMS (57K+), ALICE (171), ATLAS (184), LHCb (7K+), DELPHI (12K+). Supports pagination for large result sets.
Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| q | No | Keyword filter within datasets (e.g. "NanoAOD", "MiniAOD", "Higgs") | |
| page | No | Page number for pagination (default 1) | |
| year | No | Filter by publication year (e.g. "2015", "2016", "2012"). LHC Run 1: 2010–2013, Run 2: 2015–2016. | |
| limit | No | Number of datasets to return (1–25, default 10) | |
| experiment | No | Filter by CERN experiment. CMS has 57K+ datasets, LHCb has 7K+, DELPHI has 12K+. | |
| collision_energy | No | Filter by collision energy (e.g. "13TeV", "8TeV", "7TeV"). Run 2 used 13 TeV, Run 1 used 7–8 TeV. |
Output Schema
| Name | Required | Description | Default |
|---|---|---|---|
| error | No | Present only when the call failed. Includes error code, message, request_id, and any provider-specific extras. | |
| result | No | Tool response payload. Shape varies per tool — consult the tool description and inputSchema. May be an object, array, string, or number depending on the upstream provider response. |