Open Government, UK API

Beginner's Pick Government / No Auth Required Beginner HTTPS
Free to Use
53 D
Measured Score 0 50 100 Speed 1/30 Consistency 13/20 Security 20/20 Browser access 15/15 Transparency 4/15 TESTED 2026-08-10

Overview

The UK Open Government Data API (data.gov.uk) is one of the largest government open data portals, exposing thousands of datasets from UK central and local government agencies. It is powered by CKAN and requires no authentication for searching and browsing datasets. A great starting point for civic tech, journalism, or data science projects involving UK public data.

Beginner Tip

Use the CKAN API at data.gov.uk/api/3/action/ to search and retrieve dataset metadata — then follow the resource URLs to download the actual CSV, JSON, or Excel files.

Measurement Record

What actually happened when we called this API from our own infrastructure. Every value below was recorded by the request, not copied from the provider's documentation.

Request
GET https://data.gov.uk/api/3/action/package_search?q=crime&rows=5
Result
HTTP 200 · application/json · 29,501 bytes
Response time
1784 ms (median of 3) · fastest 1512 ms
Transport
TLSv1.3 · TLS_AES_128_GCM_SHA256 · certificate issued by Amazon
Browser CORS
Allowed — Access-Control-Allow-Origin: *
Served by
nginx
Recorded
2026-08-10

Fields Returned

Top-level fields present in the response we captured, with the type and value we actually received.

Field Type Value received
count integer 1005
facets object {0 fields}
results array [1 item]
sort string score desc, metadata_modified desc
search_facets object {0 fields}

Captured Response

Captured from a real request to https://data.gov.uk/api/3/action/package_search?q=crime&rows=5 on 2026-08-10. Long arrays and nested objects are truncated to keep the shape readable.

JSON Response · Captured
{
  "help": "https://ckan.publishing.service.gov.uk/api/3/action/help_show?name=package_search",
  "success": true,
  "result": {
    "count": 1005,
    "facets": {},
    "results": [
      {
        "…": "(25 more fields)"
      }
    ],
    "sort": "score desc, metadata_modified desc",
    "search_facets": {}
  }
}

Field Reference

success Whether the CKAN action completed successfully

Implementation Example

Calls a real endpoint of this API. Replace any placeholder credentials with your own key.

Request
const url = "https://data.gov.uk/";
const response = await fetch(url);
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

What Can You Build?

Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.

How This API Fails

We deliberately sent this API a broken request and recorded exactly what came back on 2026-08-10. Knowing the shape of an error before you hit it makes error handling much easier to write.

HTTP 404 Requesting a path that does not exist text/html

Returned an HTML error page rather than JSON — worth knowing if your client assumes every response can be parsed as JSON.

Common Errors & Troubleshooting

Generated guidance based on this API's documentation, not observed by us. Treat it as a starting point and check against the provider's own error reference.

Resource download URL returns 404 UK government agencies sometimes move or retire hosted files while keeping the metadata entry
Check the dataset page on data.gov.uk for an updated link or contact the publisher listed on the page
datastore_search returns no records Most UK GOV datasets are file-based and not loaded into the CKAN datastore
Download the resource file directly using the URL in the resources[].url field and parse it locally
Slow response on large package_search queries Broad searches without filters can return very large result sets
Add specific filters like fq=res_format:CSV or fq=organization:department-name to narrow results

Measured Score Breakdown

Live HTTP request to the API endpoint

Speed 1/30
Consistency 13/20
Security 20/20
Browser access 15/15
Transparency 4/15
Endpoint Response Time 1784ms

Fully tested on Aug 10, 2026

Technical Specifications

Auth No Auth
HTTPS REQUIRED
CORS UNKNOWN
Category Government
Difficulty Beginner
Endpoint last called: 2026-08-10

Similar APIs

View All →