# UK Government API Catalogue

**Canonical:** https://apis.io/providers/api-gov-uk/  
**Website:** https://www.api.gov.uk  
**APIs profiled:** 0

The UK Government API Catalogue (www.api.gov.uk) is a directory of central and local government APIs, maintained by the Central Digital and Data Office (CDDO) and the Data Standards Authority. It lists APIs from departments such as Companies House, DVLA, DWP, the Environment Agency and HMRC, grouped by organisation, with links to each API's own documentation. The catalogue is a static site generated from a CSV file (data/catalogue.csv) in the co-cddo/api-catalogue GitHub repository; entries are submitted through GitHub issues. Data is Crown copyright under the Open Government Licence v3.0; it publishes no API of its own.

## Kin Score — 9.9 / 100 (minimal)

Scored 2026-11-13 under rubric 0.28.0.

| Facet | Score |
|---|---|
| Discoverability | 48.2 |
| Contract Quality | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 14.3 |
| Developer Ergonomics | 14.3 |
| Access Clarity | 0.0 |

Regulatory layer — **Government & Public Sector**: 15.7 (matched via tags).

## Agent readiness — 0.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |
| Pagination Ratio | na |
| Operation Distinctiveness | na |
| MCP Tool Quality | na |

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## Security (2)

- **UK Government API Catalogue Domain Security** — TLSv1.3 · DMARC
- **UK Government API Catalogue Vulnerability Disclosure** — Hackerone · security.txt · contact published

## Tags

Company, Government, United Kingdom, API Catalog, API Discovery, Directory, Open Data

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/api-gov-uk/). Scores are computed from the provider's own public artifacts under a published rubric.