open data
Provider-declared label. Inspect each service’s documented actions and access requirements.
Services are ordered by documented operations, attributed reports and current documentation. 14 services are classified here. Each card shows the interfaces a service offers; open it for access requirements and sources.
Categories · Tasks · Interfaces · How listings are checked
Postcodes.io
Postcodes.io is a free, open-source postcode lookup API and geocoder for the United Kingdom maintained by Ideal Postcodes.
Maps and geospatial data · postcode data · open data · API
API · Access documentation verifiedOpenF1
OpenF1 is an open-source API providing detailed Formula 1 telemetry, timing, and session data in JSON and CSV formats.
sports · open data
API · Access documentation verifiedZenodo
Zenodo is a general-purpose repository for research outputs, with a REST API for searching published records.
Research and knowledge · open-data · Developer tools
API · Access documentation verifiedSolar System OpenData
A documented API providing structured physical, orbital, discovery, satellite, and sky-position data for Solar System bodies.
astronomy · open-data · api
API · Access documentation verifiedOpen Government, Canada
The Government of Canada Open Government Portal provides machine-readable access to public datasets through CKAN APIs.
Public data · open data · API
API · Access documentation verifiedCleveland Museum of Art
The Cleveland Museum of Art provides an open-access API for searching collection artworks and their metadata and image links.
art · museum-collection · open-data · api
API · Documentation checked: 2026-10-10D&D 5e SRD API
Open REST API for retrieving Dungeons & Dragons 5th Edition System Reference Document data, including spell lists.
reference · open data
API · Documentation checked: 2026-10-09Data.norge.no
Data.norge.no provides a public catalog search for datasets, APIs, concepts and related resources.
government-data · open-data · search · api
API · Documentation checked: 2026-10-11Wikidata
Collaboratively maintained structured knowledge base with an authenticated REST API for reading and editing items, properties, and statements.
knowledge base · open data · Developer tools
API · Documentation checked: 2026-10-10Dryad
Search Dryad's published research datasets and retrieve public dataset metadata through its REST API.
Research and knowledge · open-data · Research and knowledge · api
API · Documentation checked: 2026-10-11Police.uk Crime Data API
UK Police open-data API for neighbourhood information, police forces, and street-level crime and outcome datasets.
Public data · open data
API · Documentation checked: 2026-10-09Transitland
Transit-data platform with a REST API for browsing public transit routes and their representative geometries.
transit · Maps and geospatial data · open-data · rest-api
API · Documentation checked: 2026-10-11Rijksmuseum Collection Search API
Rijksmuseum Data Services offers a Search API for discovering museum collection objects by characteristics such as creator, type, material, title, date and object number, then resolving returned identifiers to full records.
museum collection · cultural heritage · open data · API
API · Documentation checked: 2026-10-09NobelPrize.org
NobelPrize.org provides open data about Nobel Prizes and Nobel Laureates through its API and Linked Data.
reference · open data
API · Documentation checked: 2026-10-09